Diagnosis System [04/2014 - 08/2015]

ECUS OR SENSORS WHICH COMMUNICATE THROUGH CAN COMMUNICATION SYSTEM
1. V Bus
  1. Combination meter assembly
  2. Certification ECU (smart key ECU assembly)*1
  3. Navigation receiver assembly*2
  4. Radio and display receiver assembly*3
  5. Airbag sensor assembly
  6. Power steering ECU assembly
  7. Air conditioning amplifier assembly*4
  8. Skid control ECU (brake actuator assembly)
  9. Steering sensor*5
  10. Main body ECU (multiplex network body ECU)
  11. ECM
HINT:

*1: w/ Smart Key System

*2: for Navigation Receiver Type

*3: for Radio and Display Type

*4: w/ Air Conditioning System

*5: w/ VSC

CHECK FOR INSTALLED SYSTEMS (ECUS AND SENSORS) THAT ADOPT CAN COMMUNICATION

The systems (ECUs and sensors) that adopt CAN communication vary depending on the vehicle and optional equipment. Check which systems (ECUs and sensors) are installed on the vehicle.

ECU/Sensor Name	Techstream Display	Applicability
ECM	ECM (Engine)	Vehicles with 2ZR-FE
ECM	ECM (Engine) VALVEMATIC Driver*	Vehicles with 2ZR-FAE
Combination meter assembly	Combination Meter	Installed on all vehicles
Power steering ECU assembly	Power Steering (EPS)	Installed on all vehicles
Main body ECU (multiplex network body ECU)	Main Body	Installed on all vehicles
Airbag sensor assembly	Airbag	Installed on all vehicles
Skid control ECU (brake actuator assembly)	Skid Control (ABS/VSC/TRAC)	Installed on all vehicles
Air conditioning amplifier assembly	Air Conditioning Amplifier	Vehicles with automatic air conditioning system Vehicles with manual air conditioning system
Certification ECU (smart key ECU assembly)	Certification (Smart)	Vehicles with smart key system
Navigation receiver assembly	Display and Navigation (AVN1)	Vehicles with navigation receiver type
Radio and display receiver assembly	Display and Navigation (AVN1)	Vehicles with radio and display type
Steering sensor	Spiral cable (Steering Angle Sensor)	Vehicles with VSC

HINT:

The names of ECUs and sensors shown on the Techstream display may differ from those shown in the DTC Table.
*: If "ECM (Engine)" is displayed but "VALVEMATIC Driver" is not displayed, a local CAN communication error between the ECM and continuously variable valve lift controller assembly is suspected. (Output DTC: U011B)

CAN BUS CHECK

HINT:

The ECUs and sensors that are properly connected to the CAN communication system can be displayed using the Techstream.

Using the Techstream, select the CAN Bus Check screen.

NOTE:

It may be possible to select buses that do not have ECUs or sensors from the bus selection pull-down menu. This is not a malfunction. (This occurs when optional devices are not on a sub bus that is monitored by a gateway function equipped ECU.)
In the bus selection pull down menu, all buses applicable to the model are displayed (e.g. LIN communication buses are also displayed). Therefore, refer to the wiring diagrams to check the names of sub buses for CAN communication.
Refer to SYSTEM DIAGRAM [04/2014 - 08/2016]

HINT:

Different connection statuses are indicated by the background color of ECUs and sensors that are displayed.

EXPLANATION OF CAN BUS CHECK SCREEN

Bus Type	Background Color	Connection Status
V Bus	White	Communication has been normal since the start of the CAN bus check.
	Yellow	Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication).
	Red	Communication was established at least once since the start of the CAN bus check, but communication is currently not occurring (unstable communication).
	Not displayed	Communication stop has continued since the start of the CAN bus check.*1
Sub Bus (gateway function equipped ECU that does not have history of connected ECUs)*2	White	Communication has been normal since the start of the CAN bus check.
	Yellow	Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication).
	Red	Communication was established at least once since the start of the CAN bus check, but communication is currently not occurring (unstable communication).
	Not displayed	Communication stop has continued since the start of the CAN bus check.*1
Sub Bus (gateway function equipped ECU that has history of connected ECUs)*3	White	Communication has been normal since the start of the CAN bus check.
	Yellow	Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication).
	Red	Currently not communicating (either of the following): Communication stop has continued since the start of the CAN bus check. Communication was established at least once since the start of the CAN bus check, but communication is currently not occurring.
	Not displayed	Either of the following: If a gateway function equipped ECU cannot communicate, the sub bus and ECUs connected to the sub bus will not be displayed. If no ECUs are connected to the sub bus, "There is no system found on the Communication Bus" will be displayed.

HINT:

Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.
*1: ECUs that are present in the vehicle but are not displayed on the CAN Bus Check screen.
*2: Gateway function equipped ECU that does not memorize the sub bus ECUs that are connected to it.
*3: Gateway function equipped ECU that memorizes the sub bus ECUs that are connected to it.
If none of the connected ECUs are displayed, or there is no response from the vehicle to the Techstream, check the DLC3 branch and the V bus main bus lines for a malfunction.

Observe the connection response screen for approximately 2 minutes to check for a change in connection status of the connected ECUs and sensors.
HINT:
- If an open occurs in one of the lines of a CAN branch (except DLC3), output from the other branch line (the line that is not open) will be unstable and it may interfere with the response (display) of other ECUs and sensors.
- If the connection status changes during the inspection, repair the open in the branch line of the ECU or sensor that does not respond (is not detected) and then perform the CAN bus check again.

HOW TO INTERPRET CAN BUS CHECK SCREEN

When a communication stop is currently occurring, the probable malfunctioning part can be determined from the CAN bus check and by using the following methods.
NOTE:
The following CAN bus wiring diagram is provided only as an example. This wiring diagram is different from the actual wiring diagram for this vehicle.

HINT:
- When a communication stop is currently occurring, it is easier to determine the probable malfunctioning part from the CAN bus check rather than from communication DTCs.
- Wait for approximately 2 minutes after turning the ignition switch to ON (or simulating the driving conditions that enable the malfunction to be reproduced) and select "CAN Bus Check". Then observe the communication status of each ECU on the screen.

If a communication error of only 1 ECU or sensor is indicated on the CAN Bus Check screen, a communication stop of the ECU or sensor is suspected.

Example: Open in both CAN branch lines of ECU B on the V bus

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	V Bus	*b	Sub Bus
*c	Terminating Resistor	*d	Location of Malfunction
*e	Not displayed or background color changes to red or yellow	*f	CAN Bus Check Screen

HINT:

When there are communication stops, ECUs are present in the vehicle even though they are not displayed on the CAN Bus Check screen.

If communication errors for multiple ECUs or sensors are indicated on the CAN Bus Check screen, then a communication stop of the ECU or sensor that shows a more serious communication stop (an ECU or a sensor which is not displayed) is suspected.

Example: Open in a CAN branch line for ECU D on the V bus

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Background color periodically changes to yellow or red
*b	Not displayed or background color is yellow or red
*c	Not displayed

EXPLANATION OF CAN BUS CHECK SCREEN

Bus Type	Background Color	Connection Status
V Bus	White	Communication has been normal since the start of the CAN bus check.
	Yellow	Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication).
	Red	Communication was established at least once since the start of the CAN bus check, but communication is currently not occurring (unstable communication).
	Not displayed	Communication stop has continued since the start of the CAN bus check.*1
Sub Bus (gateway function equipped ECU that does not have history of connected ECUs)*2	White	Communication has been normal since the start of the CAN bus check.
	Yellow	Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication).
	Red	Communication was established at least once since the start of the CAN bus check, but communication is currently not occurring (unstable communication).
	Not displayed	Communication stop has continued since the start of the CAN bus check.*1
Sub Bus (gateway function equipped ECU that has history of connected ECUs)*3	White	Communication has been normal since the start of the CAN bus check.
	Yellow	Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication).
	Red	Currently not communicating (either of the following): Communication stop has continued since the start of the CAN bus check. Communication was established at least once since the start of the CAN bus check, but communication is currently not occurring.
	Not displayed	Either of the following: If a gateway function equipped ECU cannot communicate, sub bus and ECUs connected to the sub bus will not be displayed. If no ECUs are connected to the sub bus, "There is no system found on the Communication Bus" will be displayed.

HINT:

Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.
*1: ECUs that are present in the vehicle but are not displayed on the CAN Bus Check screen.
*2: Gateway function equipped ECU that does not memorize the sub bus ECUs that are connected to it.
*3: Gateway function equipped ECU that memorizes the sub bus ECUs that are connected to it.
The example of the CAN Bus Check screen in the illustration shows the result of electrical noise on the CAN bus which is caused by an open in a CAN branch line of ECU D (output from the other branch line is unstable) and the communication of ECU C is also unstable. In addition, in this example, ECU C is equipped with a gateway function. Therefore, communication is also unstable between the sub bus ECUs of ECU C and the V bus.
The example in the illustration shows that ECU D is not displayed on the CAN Bus Check screen. This indicates a more significant communication stop. In this case, a communication stop of ECU D is suspected.

If a communication error is indicated on both the V bus and sub bus on the CAN Bus Check screen, suspect any communication stop displayed for the V bus first.

Example: Open in both CAN branch lines of ECU C on the V bus

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Not displayed or background color changes to red

HINT:

In the CAN bus check, it is possible to confirm the communication status of ECUs connected to the V bus after connecting the Techstream to the DLC3. As for sub buses, it is possible to confirm which sub bus connected ECUs can communicate with a gateway function equipped ECU on the V bus.
If a gateway function equipped ECU has a communication error, ECUs connected to the gateway function equipped ECU are also affected, and communication stops will be indicated.
The CAN Bus Check screen in the illustration shows that ECU C has a gateway function and a communication stop in ECU C is suspected.

If the CAN Bus Check screen indicates a communication stop only in the sub bus, a communication stop in the sub bus is suspected.

Example: Open in both CAN branch lines of ECU G on the sub bus

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Background color changes to red

HINT:

A communication error in a sub bus does not affect the V bus or other buses.
When a gateway function equipped ECU has memorized the ECUs that are connected to the sub bus, if any of the ECUs connected to the gateway function equipped ECU has a communication error, the background color changes to yellow or red. (The displayed name will not disappear.)

If both of the V bus main bus lines are open, ECUs or sensors that are located farther away from the DLC3 than the open part will be displayed as a communication stop on the CAN Bus Check screen.

(In this case, ECU A and B are not displayed or their background color changes to red.)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	V Bus	*b	Sub Bus
*c	Terminating Resistor	*d	Location of Malfunction
*e	Not displayed or background color is red	*f	CAN Bus Check Screen

HINT:

If a communication error occurs in an ECU, it is not displayed on the CAN Bus Check screen even though the ECU is present.

If both of the sub bus main bus lines are open, ECUs that are located farther away from the gateway function equipped ECU than the open part will be displayed as a communication stop on the CAN Bus Check screen.

(In this case, ECU I and J are not displayed or their background color changes to red.)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	V Bus	*b	Sub Bus
*c	Terminating Resistor	*d	Location of Malfunction
*e	Not displayed or background color is red	*f	CAN Bus Check Screen
*g	Gateway Function Equipped ECU	-	-

When any of the following malfunctions occur, CAN communication cannot be established and almost all ECUs and sensors on the bus show a communication error on the CAN Bus Check screen.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	When any of the following malfunctions occur on the V bus
*b	When any of the following malfunctions occur on a sub bus
*c	Not displayed

DETAILS OF MALFUNCTION

Short between CAN lines (CANH and CANL)

Short between a CAN line (CANH or CANL) and +B

Short between a CAN line (CANH or CANL) and ground

Open in a CAN main bus line

HINT:

When a malfunction occurs on the V bus, almost all ECUs and sensors on the V bus and sub bus indicate a communication error (almost all ECUs are not displayed). As communication with the gateway function equipped ECU that is connected to the V bus stops, communication from the ECUs connected to the sub bus that is monitored by the gateway function equipped ECU also stops (these ECUs are not displayed).
When a malfunction occurs in a sub bus, almost all ECUs connected to the sub bus indicate a communication error.
A communication error in a sub bus does not affect the V bus or other buses.
The malfunctioning part can be determined by checking for a short circuit between CAN bus lines or between a CAN bus line and ground or +B short using an electrical tester.

HOW TO INTERPRET COMMUNICATION DTCS (DTCS THAT START WITH U)

If a CAN communication error cannot be reproduced, determine the suspected malfunctioning part using the DTCs stored in ECUs that are connected to the CAN buses by following the procedure below.

HINT:

Communication DTCs (DTCs that start with U) indicate a communication error between the ECU that stores the DTC and the ECU that is indicated by the DTC.

If multiple ECUs store a communication DTC for a particular ECU, a communication stop of the ECU is suspected.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Items to be Checked

NOTE:

This DTC table is from another model, and is only used here to show an example of DTCs that are output when there is an open in a CAN branch line for the main body ECU. This table does not show DTCs applicable to this vehicle.
Even though a DTC title may indicate a communication error with a specific ECU, the ECU name used in the DTC name on the Techstream may differ depending on the ECU that stores the DTC. (Regarding output DTCs, refer to step 6 and the DTC chart for each ECU.)

HINT:

As multiple ECUs indicate a communication stop with the main body ECU, the possibility of a communication stop of the main body ECU is high.

If almost all of the communication DTCs of an ECU are stored, a communication stop of the ECU is suspected.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Items to be Checked

NOTE:

This DTC table is from another model, and is only used here to show an example of DTCs that are output when there is an open in a CAN branch line for the main body ECU. This table does not show DTCs applicable to this vehicle.

HINT:

If almost all of the DTCs of the main body ECU are stored, the possibility of a communication stop of the main body ECU is high.

When a CAN communication error occurs, many DTCs are output. DTCs other than communication error DTCs (such as DTCs that start with C or B) and communication DTCs for the ABS system are important DTCs, however it may be easier to determine the malfunctioning part by examining the overall situation without considering these DTCs.

To help determine the part of the sub bus that has a communication error, prioritize the communication stop DTCs stored in the gateway function equipped ECU.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Items to be Checked	*b	ECM
*c	Gateway Function Equipped ECU	*d	Location of Malfunction
*e	V Bus	*f	Sub Bus

NOTE:

This DTC table is from another model, and is only used here to show the ECUs connected to both a V bus and a sub bus. It shows DTCs output when there is an open in the main bus lines for the ECM on the sub bus. This table does not show DTCs applicable to this vehicle.

HINT:

As gateway function equipped ECUs (sub bus monitor ECU) monitor signals from all ECUs that are connected to sub buses, gateway function equipped ECUs can detect ECUs with a communication stop more accurately.
When there is a communication stop for the gateway function equipped ECU (gateway), communication with ECUs connected to other buses such as the V bus stops. Therefore, communication DTCs for ECUs connected to other buses are also stored.

When any of the following malfunctions occurs, many DTCs are likely to be output from many ECUs. Because of this, it may be difficult to determine the probable malfunctioning part.
- Short between CAN lines (CANH and CANL)
- Short between a CAN line (CANH or CANL) and ground
- Short between a CAN line (CANH or CANL) and +B
- Open in a CAN branch line (CANH or CANL) of an ECU or sensor
- Open in a CAN main bus line (CANH or CANL) between 2 ECUs that have a terminating resistor

DTC TABLE BY ECU

HINT:

In the CAN communication system, the CAN communication DTCs of each ECU can be displayed using the Techstream.
If CAN communication system DTCs are output, the malfunction cannot be determined only by the DTCs. Perform troubleshooting according to How to Proceed with Troubleshooting.
Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ]
If the system function temporarily returns to normal, DTCs may not be output again even though the following DTC check procedures are used.

ECM (2ZR-FE) / Techstream Display "Engine and ECT"

Powertrain > Engine and ECT > Trouble Codes

HINT:

This ECU uses the CAN communication system for DTC communication.

ECM / TECHSTREAM DISPLAY "ENGINE AND ECT"

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0129	Lost Communication with Skid Control ECU	The ECM does not receive data from the skid control ECU (brake actuator assembly) for 2.22 seconds or more.	Both conditions are met: The ignition switch is ON for 2.1 seconds or more. The power source voltage of the ECM is 10.5 V or more.	Turn the ignition switch to ON and wait at least 4.32 seconds.	MIL illuminates.	DTC is stored until it is cleared using the Techstream.

ECM (2ZR-FAE) / Techstream Display "Engine and ECT"

Powertrain > Engine and ECT > Trouble Codes

HINT:

This ECU uses the CAN communication system for DTC communication.
*: This DTC is stored due to a local CAN communication error between the ECM and continuously variable valve lift controller assembly.

ECM / TECHSTREAM DISPLAY "ENGINE AND ECT"

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0129	Lost Communication with Brake System Control Module	The ECM does not receive data from the skid control ECU (brake actuator assembly) for 2.22 seconds or more.	Both conditions are met: The ignition switch is ON for 2.1 seconds or more. The power source voltage of the ECM is 10.5 V or more.	Turn the ignition switch to ON and wait at least 4.32 seconds.	MIL illuminates.	DTC is stored until it is cleared using the Techstream.
U011B*	Lost Communication with Rocker Arm Control Module "A"	The ECM does not receive data from the continuously variable valve lift controller assembly for 0.99 seconds or more.	Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the ECM is 10.5 V or more.	Turn the ignition switch to ON and wait at least 1.99 seconds.	MIL illuminates.	DTC is stored until it is cleared using the Techstream.

Skid Control ECU (Brake Actuator Assembly) (w/o VSC) / Techstream Display "ABS/VSC/TRAC"

Chassis > ABS/VSC/TRAC > Trouble Codes

HINT:

This ECU uses the CAN communication system for DTC communication.
*: DTC U0073 may be stored when communication is lost.

SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) / TECHSTREAM DISPLAY "ABS/VSC/TRAC"

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0073*	Control Module Communication Bus OFF	The skid control ECU (brake actuator assembly) cannot send/receive data (bus off) once or more within 5 seconds.	Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the skid control ECU (brake actuator assembly) (IG1 terminal voltage) is between 10 and 17.4 V.	Turn the ignition switch to ON and wait at least 6 seconds.	ABS warning light illuminates. Brake warning light illuminates.	DTC is stored until it is cleared using the Techstream.

Skid Control ECU (Brake Actuator Assembly) (w/ VSC) / Techstream Display "ABS/VSC/TRAC"

Chassis > ABS/VSC/TRAC > Trouble Codes

HINT:

This ECU uses the CAN communication system for DTC communication.
*: DTC U0073 may be stored when communication is lost.

SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) / TECHSTREAM DISPLAY "ABS/VSC/TRAC"

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0073*	Control Module Communication Bus OFF	The skid control ECU (brake actuator assembly) cannot send/receive data (bus off) once or more within 5 seconds.	Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the skid control ECU (brake actuator assembly) (IG1 terminal voltage) is between 10 and 17.4 V.	Turn the ignition switch to ON and wait at least 6 seconds.	ABS warning light illuminates. Slip indicator light illuminates. Brake warning light illuminates.	DTC is stored until it is cleared using the Techstream.
U0100	Lost Communication with ECM / PCM	The skid control ECU (brake actuator assembly) does not receive data from the ECM for 2 seconds or more.	All conditions are met: The ignition switch is ON for 1 second or more. Vehicle speed is 15 km/h (9 mph) or more. The power source voltage of the skid control ECU (brake actuator assembly) (IG1 terminal voltage) is between 10 and 17.4 V.	Turn the ignition switch to ON and drive the vehicle at a speed of 15 km/h (9 mph) or more for 3 seconds or more.	Slip indicator light illuminates.	DTC is stored until it is cleared using the Techstream.
U0124	Lost Communication with Lateral Acceleration Sensor Module	Either of the following conditions is met: When vehicle speed is 7 km/h (4 mph) or more, the skid control ECU (brake actuator assembly) does not receive data from the airbag sensor assembly for 1 second or more. The following condition occurs 10 times or more within 60 seconds: The skid control ECU (brake actuator assembly) does not receive data from the airbag sensor assembly once or more within 5 seconds.	Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the skid control ECU (brake actuator assembly) (IG1 terminal voltage) is between 10 and 17.4 V.	Turn the ignition switch to ON and wait at least 61 seconds, and then drive the vehicle at a speed of 7 km/h (4 mph) or more for 1 second or more.	ABS warning light illuminates. Slip indicator light illuminates.	DTC is stored until it is cleared using the Techstream.
U0126	Lost Communication with Steering Angle Sensor Module	Either of the following conditions is met: The skid control ECU (brake actuator assembly) does not receive data from the steering sensor for 1 second or more. The following condition occurs 10 times or more within 60 seconds: The skid control ECU (brake actuator assembly) does not receive data from the steering sensor once or more within 5 seconds.	Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the skid control ECU (brake actuator assembly) (IG1 terminal voltage) is between 10 and 17.4 V.	Turn the ignition switch to ON and wait at least 61 seconds.	Slip indicator light illuminates.	DTC is stored until it is cleared using the Techstream.

Power Steering ECU Assembly / Techstream Display "EMPS"

Chassis > EMPS > Trouble Codes

HINT:

This ECU uses the CAN communication system for DTC communication.

POWER STEERING ECU ASSEMBLY / TECHSTREAM DISPLAY "EMPS"

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0100	Lost Communication with ECM / PCM "A"	The power steering ECU assembly does not receive data from the ECM for 300 seconds or more.	All conditions are met: The ignition switch is ON for 3 seconds or more. Vehicle speed is 20 km/h (12 mph) or more. The power source voltage of the power steering ECU assembly is 9 V or more.	Drive the vehicle at a speed of 20 km/h (12 mph) or more for 300 seconds or more.	EPS warning light illuminates.	DTC remains stored only while malfunction is occurring.
U0129	Lost Communication with Brake System Control Module	The power steering ECU assembly cannot receive data from the skid control ECU (brake actuator assembly) for 2.34 seconds or more.	Both conditions are met: The ignition switch is ON for 3 seconds or more. The power source voltage of the power steering ECU assembly is 9 V or more.	Turn the ignition switch to ON and wait at least 5.34 seconds.	EPS warning light illuminates.	DTC remains stored only while malfunction is occurring.

Main Body ECU (Multiplex Network Body ECU) / Techstream Display "Main Body"

Body Electrical > Main Body > Trouble Codes

HINT:

This ECU uses the CAN communication system for DTC communication.
*1: w/ Smart Key System
*2: w/ Air Conditioning System

MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) / TECHSTREAM DISPLAY "MAIN BODY"

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0100	Lost Communication with ECM / PCM "A"	The main body ECU (multiplex network body ECU) does not receive data from the ECM for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more.	Turn the ignition switch to ON and wait at least 20 seconds.	-	DTC is stored until it is cleared using the Techstream.
U0101	Lost Communication with TCM	The main body ECU (multiplex network body ECU) does not receive data from the ECM for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more.	Turn the ignition switch to ON and wait at least 20 seconds.	-	DTC is stored until it is cleared using the Techstream.
U0120*1	Lost Communication with Starter / Generator Control Module	The main body ECU (multiplex network body ECU) does not receive data from the certification ECU (smart key ECU assembly) for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more.	Turn the ignition switch to ON and wait at least 20 seconds.	-	DTC is stored until it is cleared using the Techstream.
U0151	Lost Communication with Restraints Control Module	The main body ECU (multiplex network body ECU) does not receive data from the airbag sensor assembly for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more.	Turn the ignition switch to ON and wait at least 20 seconds.	-	DTC is stored until it is cleared using the Techstream.
U0155	Lost Communication with Instrument Panel Cluster (IPC) Control Module	The main body ECU (multiplex network body ECU) does not receive data from the combination meter assembly for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more.	Turn the ignition switch to ON and wait at least 20 seconds.	-	DTC is stored until it is cleared using the Techstream.
U0164*2	Lost Communication with HVAC Control Module	The main body ECU (multiplex network body ECU) does not receive data from the air conditioning amplifier assembly for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more.	Turn the ignition switch to ON and wait at least 20 seconds.	-	DTC is stored until it is cleared using the Techstream.
U0327*1	Software Incompatibility with Vehicle Security Control Module	The main body ECU (multiplex network body ECU) does not receive data from the certification ECU (smart key ECU assembly) for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more.	Turn the ignition switch to ON and wait at least 20 seconds.	-	DTC is stored until it is cleared using the Techstream.

Certification ECU (Smart Key ECU Assembly) (w/ Smart Key System) / Techstream Display "Smart Key"

Body Electrical > Smart Key > Trouble Codes

HINT:

This ECU uses the CAN communication system for DTC communication.

CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) / TECHSTREAM DISPLAY "SMART KEY"

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0100	Lost Communication with ECM / PCM	The certification ECU (smart key ECU assembly) does not receive data from the ECM for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or more.	Turn the ignition switch to ON and wait at least 20 seconds.	-	DTC is stored until it is cleared using the Techstream.
U0142	Lost Communication with Main Body ECU	The certification ECU (smart key ECU assembly) does not receive data from the main body ECU (multiplex network body ECU) for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or more.	Turn the ignition switch to ON and wait at least 20 seconds.	-	DTC is stored until it is cleared using the Techstream.
U0155	Lost Communication with Combination Meter	The certification ECU (smart key ECU assembly) does not receive data from the combination meter assembly for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or more.	Turn the ignition switch to ON and wait at least 20 seconds.	-	DTC is stored until it is cleared using the Techstream.

Certification ECU (Smart Key ECU Assembly) (w/ Smart Key System) / Techstream Display "Power Source Control"

Body Electrical > Power Source Control > Trouble Codes

HINT:

This ECU uses the CAN communication system for DTC communication.

CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) / TECHSTREAM DISPLAY "POWER SOURCE CONTROL"

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0100	Lost Communication with ECM / PCM	The certification ECU (smart key ECU assembly) does not receive data from the ECM for 3.1 seconds or more.	Both conditions are met: The ignition switch is ON for 10 seconds or more. The power source voltage of the certification ECU (smart key ECU assembly) is 9.5 V or more.	Turn the ignition switch to ON and wait at least 13.1 seconds.	-	DTC is stored until it is cleared using the Techstream.
U0140	Lost Communication with Main Body ECU	The certification ECU (smart key ECU assembly) does not receive data from the main body ECU (multiplex network body ECU) for 3 seconds or more.	Both conditions are met: The ignition switch is ON for 10 seconds or more. The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or more.	Turn the ignition switch to ON and wait at least 13 seconds.	-	DTC is stored until it is cleared using the Techstream.
U0155	Lost Communication with Combination Meter	The certification ECU (smart key ECU assembly) does not receive data from the combination meter assembly for 10 seconds or more.	Both conditions are met: The ignition switch is ON for 10 seconds or more. The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or more.	Turn the ignition switch to ON and wait at least 20 seconds.	-	DTC is stored until it is cleared using the Techstream.

Certification ECU (Smart Key ECU Assembly) (w/ Smart Key System) / Techstream Display "Starting Control"

Body Electrical > Starting Control > Trouble Codes

HINT:

This ECU uses the CAN communication system for DTC communication.

CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) / TECHSTREAM DISPLAY "STARTING CONTROL"

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0100	Lost Communication with ECM / PCM	The certification ECU (smart key ECU assembly) does not receive data from the ECM for 2 seconds or more.	Both conditions are met: The ignition switch is ON. The power source voltage of the certification ECU (smart key ECU assembly) is 10.5 V or more.	Turn the ignition switch to ON and wait at least 2 seconds.	-	DTC remains stored only while malfunction is occurring.

Air Conditioning Amplifier Assembly (w/ Air Conditioning System) / Techstream Display "Air Conditioner"

Body Electrical > Air Conditioner > Trouble Codes

HINT:

This ECU uses the CAN communication system for DTC communication.

AIR CONDITIONING AMPLIFIER ASSEMBLY / TECHSTREAM DISPLAY "AIR CONDITIONER"

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0100	Lost Communication with ECM	The air conditioning amplifier assembly does not receive data from the ECM for 5 seconds or more.	Both conditions are met: The ignition switch is ON. The power source voltage of the air conditioning amplifier assembly is 10 V or more.	Turn the ignition switch to ON and wait at least 5 seconds.	-	DTC is stored until it is cleared using the Techstream.
U0131	Lost Communication with Electric Power Steering ECU	The air conditioning amplifier assembly does not receive data from the power steering ECU assembly for 5 seconds or more.	Both conditions are met: The ignition switch is ON. The power source voltage of the air conditioning amplifier assembly is 10 V or more.	Turn the ignition switch to ON and wait at least 5 seconds.	-	DTC is stored until it is cleared using the Techstream.
U0142	Lost Communication with Main Body ECU	The air conditioning amplifier assembly does not receive data from the main body ECU (multiplex network body ECU) for 5 seconds or more.	Both conditions are met: The ignition switch is ON. The power source voltage of the air conditioning amplifier assembly is 10 V or more.	Turn the ignition switch to ON and wait at least 5 seconds.	-	DTC is stored until it is cleared using the Techstream.
U0155	Lost Communication with Combination Meter	The air conditioning amplifier assembly does not receive data from the combination meter assembly for 5 seconds or more.	Both conditions are met: The ignition switch is ON. The power source voltage of the air conditioning amplifier assembly is 10 V or more.	Turn the ignition switch to ON and wait at least 5 seconds.	-	DTC is stored until it is cleared using the Techstream.

Navigation Receiver Assembly (for Navigation Receiver Type) / Techstream Display "Navigation System"

Body Electrical > Navigation System > Trouble Codes

HINT:

This ECU uses the CAN communication system for DTC communication.
*1: DTC U0073 may be stored when communication is lost.
*2: w/ Air Conditioning System

NAVIGATION RECEIVER ASSEMBLY / TECHSTREAM DISPLAY "NAVIGATION SYSTEM"

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0073*1	Sending Malfunction (Navigation to APGS)	The navigation receiver assembly does not send/receive data for 5 seconds or more.	Both conditions are met: The ignition switch is ON. The power source voltage of the navigation receiver assembly is 9.5 V or more.	Turn the ignition switch to ON and wait at least 5 seconds.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U0100	Engine ECU Communication	The navigation receiver assembly does not receive data from the ECM for 12 seconds or more.	Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the navigation receiver assembly is 9.5 V or more.	Turn the ignition switch to ON and wait at least 13 seconds.	-	DTC is stored until it is cleared using the Techstream.
U0129	VSC (ECB) ECU Communication	The navigation receiver assembly does not receive data from the skid control ECU (brake actuator assembly) for 1 second or more.	Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the navigation receiver assembly is 9.5 V or more.	Turn the ignition switch to ON and wait at least 2 seconds.	-	DTC is stored until it is cleared using the Techstream.
U0140	Lost Communication with Body Control Module	The navigation receiver assembly does not receive data from the main body ECU (multiplex network body ECU) for 10 seconds or more.	Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the navigation receiver assembly is 9.5 V or more.	Turn the ignition switch to ON and wait at least 11 seconds.	-	DTC is stored until it is cleared using the Techstream.
U0155	Meter ECU Communication	The navigation receiver assembly does not receive data from the combination meter assembly for 30 seconds or more.	Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the navigation receiver assembly is 9.5 V or more.	Turn the ignition switch to ON and wait at least 31 seconds.	-	DTC is stored until it is cleared using the Techstream.
U0164*2	Air Conditioner ECU Communication	The navigation receiver assembly does not receive data from the air conditioning amplifier assembly for 10 seconds or more.	Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the navigation receiver assembly is 9.5 V or more.	Turn the ignition switch to ON and wait at least 11 seconds.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.

Radio and Display Receiver Assembly (for Radio and Display Type) / Techstream Display "Navigation System"

Body Electrical > Navigation System > Trouble Codes

HINT:

This ECU uses the CAN communication system for DTC communication.
*1: DTC U0073 may be stored when communication is lost.
*2: w/ Air Conditioning System

RADIO AND DISPLAY RECEIVER ASSEMBLY / TECHSTREAM DISPLAY "NAVIGATION SYSTEM"

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0073*1	Sending Malfunction (Navigation to APGS)	The radio and display receiver assembly does not send/receive data for 5 seconds or more.	Both conditions are met: The ignition switch is ON. The power source voltage of the radio and display receiver assembly is 9.5 V or more.	Turn the ignition switch to ON and wait at least 5 seconds.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U0100	Engine ECU Communication	The radio and display receiver assembly does not receive data from the ECM for 12 seconds or more.	Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the radio and display receiver assembly is 9.5 V or more.	Turn the ignition switch to ON and wait at least 13 seconds.	-	DTC is stored until it is cleared using the Techstream.
U0129	VSC (ECB) ECU Communication	The radio and display receiver assembly does not receive data from the skid control ECU (brake actuator assembly) for 1 second or more.	Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the radio and display receiver assembly is 9.5 V or more.	Turn the ignition switch to ON and wait at least 2 seconds.	-	DTC is stored until it is cleared using the Techstream.
U0140	Lost Communication with Body Control Module	The radio and display receiver assembly does not receive data from the main body ECU (multiplex network body ECU) for 10 seconds or more.	Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the radio and display receiver assembly is 9.5 V or more.	Turn the ignition switch to ON and wait at least 11 seconds.	-	DTC is stored until it is cleared using the Techstream.
U0155	Meter ECU Communication	The radio and display receiver assembly does not receive data from the combination meter assembly for 30 seconds or more.	Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the radio and display receiver assembly is 9.5 V or more.	Turn the ignition switch to ON and wait at least 31 seconds.	-	DTC is stored until it is cleared using the Techstream.
U0164*2	Air Conditioner ECU Communication	The radio and display receiver assembly does not receive data from the air conditioning amplifier assembly for 10 seconds or more.	Both conditions are met: The ignition switch is ON for 1 second or more. The power source voltage of the radio and display receiver assembly is 9.5 V or more.	Turn the ignition switch to ON and wait at least 11 seconds.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.

Combination Meter Assembly / Techstream Display "Combination Meter"

Body Electrical > Combination Meter > Trouble Codes

HINT:

This ECU uses the CAN communication system for DTC communication.

COMBINATION METER ASSEMBLY / TECHSTREAM DISPLAY "COMBINATION METER"

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0100	Lost Communication with ECM / PCM "A"	The combination meter assembly does not receive data from the ECM for 2 seconds or more.	Both conditions are met: The ignition switch is ON. The power source voltage of the combination meter assembly is 9.5 V or more.	Turn the ignition switch to ON and wait at least 2 seconds.	-	DTC is stored until it is cleared using the Techstream.
U0129	Lost Communication with Brake System Control Module	The combination meter assembly does not receive data from the skid control ECU (brake actuator assembly) for 2 seconds or more.	Both conditions are met: The ignition switch is ON. The power source voltage of the combination meter assembly is 9.5 V or more.	Turn the ignition switch to ON and wait at least 2 seconds.	-	DTC is stored until it is cleared using the Techstream.
U0131	Lost Communication with Power Steering Control Module	The combination meter assembly does not receive data from the power steering ECU assembly for 3 seconds or more.	Both conditions are met: The ignition switch is ON. The power source voltage of the combination meter assembly is 9.5 V or more.	Turn the ignition switch to ON and wait at least 3 seconds.	EPS warning light illuminates.	DTC is stored until it is cleared using the Techstream.
U0142	Lost Communication with Body Control Module "B"	The combination meter assembly does not receive data from the main body ECU (multiplex network body ECU) for 10 seconds or more.	Both conditions are met: The ignition switch is ON. The power source voltage of the combination meter assembly is 9.5 V or more.	Turn the ignition switch to ON and wait at least 10 seconds.	-	DTC is stored until it is cleared using the Techstream.
U0151	Lost Communication with Restraints Control Module	The combination meter assembly does not receive data from the airbag sensor assembly for 10 seconds or more.	Both conditions are met: The ignition switch is ON. The power source voltage of the combination meter assembly is 9.5 V or more.	Turn the ignition switch to ON and wait at least 10 seconds.	SRS warning light illuminates.	DTC is stored until it is cleared using the Techstream.

Airbag Sensor Assembly / Techstream Display "SRS Airbag"
HINT:

The airbag sensor assembly is connected to the CAN communication system, but the airbag sensor assembly does not store or output CAN communication DTCs.
Steering Sensor (w/ VSC) / Techstream Display "-"
HINT:

The steering sensor is connected to the CAN communication system, but the steering sensor does not store or output CAN communication DTCs.

DTC COMBINATION TABLE (OPEN IN CAN BRANCH OF V BUS, PAST COMMUNICATION ERROR)

Regarding a past communication error of an ECU and sensor connected to the V bus (in this case, normal is displayed when performing the CAN bus check, but communication DTCs are output), the probable CAN branch that had a malfunction can be determined based on the following DTC combination table.

HINT:

Based on the table below and DTCs output from ECUs connected via CAN communication, the probable part for which communication stop occurred can be determined.
Regarding an open in a CAN branch and a communication stop that is currently occurring, the malfunctioning part can be confirmed easily by performing the CAN bus check using the Techstream because the ECU or sensor connected to the CAN branch does not respond (the ECU or sensor name will not be displayed on the screen).
If an open in a CAN main bus line, a short between the CAN bus lines (CANH and CANL) or a +B or ground short in the CAN bus occurs, DTCs of almost all ECUs (or sensors) on the CAN bus may be output, or a message indicating a communication error may be displayed on the Techstream screen. In this case, check the resistance of the CAN bus (steps 7 to 9) first.
Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ]
If an open occurs in just one of the lines of a CAN branch, DTCs which are not related to malfunctioning parts may be output (DTCs may be displayed randomly), or a message indicating a communication error may be displayed.

-			Trouble Mode (Open in One CAN Branch Line)
-			V Bus
Output ECU		Output DTC	Center Airbag Sensor Communication Stop Mode Refer to Center Airbag Sensor Communication Stop Mode [08/2013 - ]	Brake Actuator (Skid Control ECU) Communication Stop Mode Refer to Brake Actuator (Skid Control ECU) Communication Stop Mode [04/2014 - 08/2015]	Air Conditioning Amplifier Communication Stop Mode Refer to Air Conditioning Amplifier Communication Stop Mode [08/2013 - 08/2016]
V Bus	Airbag Sensor Assembly	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly) (w/ VSC)*	U0100	←	X	←
		U0124	X	X	←
		U0126	←	X	←
	Air Conditioning Amplifier Assembly	U0100	←	←	X
		U0131	←	←	X
		U0142	←	←	X
		U0155	←	←	X
	Navigation Receiver Assembly*	U0100	←	←	←
		U0129	←	X	←
		U0140	←	←	←
		U0155	←	←	←
		U0164	←	←	X
	Radio and Display Receiver Assembly*	U0100	←	←	←
		U0129	←	X	←
		U0140	←	←	←
		U0155	←	←	←
		U0164	←	←	X
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	←	←	←
		U0142	←	←	←
		U0155	←	←	←
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	←	←	←
		U0140	←	←	←
		U0155	←	←	←
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	←	←	←
	Power Steering ECU Assembly	U0100	←	←	←
	Power Steering ECU Assembly	U0129	←	X	←
V Bus	ECM (for 2ZR-FE)	U0129	←	X	←
	ECM (for 2ZR-FAE)	U0129	←	X	←
	Main Body ECU (Multiplex Network Body ECU)	U0100	←	←	←
		U0101	←	←	←
		U0120	←	←	←
		U0151	X	←	←
		U0155	←	←	←
		U0164	←	←	X
		U0327	←	←	←
	Combination Meter Assembly	U0100	←	←	←
		U0129	←	X	←
		U0131	←	←	←
		U0142	←	←	←
		U0151	X	←	←
	Steering Sensor	-	-	-	-

-			Trouble Mode (Open in One CAN Branch Line)
-			V Bus
Output ECU		Output DTC	Navigation Receiver Assembly Communication Stop Mode Refer to Navigation Receiver Assembly Communication Stop Mode [08/2013 - ]	Radio Receiver Assembly Communication Stop Mode Refer to Radio Receiver Assembly Communication Stop Mode [08/2013 - ]	Certification ECU Communication Stop Mode Refer to Certification ECU Communication Stop Mode [08/2013 - ]	Power Steering ECU Communication Stop Mode Refer to Power Steering ECU Communication Stop Mode [08/2013 - ]
V Bus	Airbag Sensor Assembly	-	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly) (w/ VSC)*	U0100	←	←	←	←
		U0124	←	←	←	←
		U0126	←	←	←	←
	Air Conditioning Amplifier Assembly	U0100	←	←	←	←
		U0131	←	←	←	X
		U0142	←	←	←	←
		U0155	←	←	←	←
	Navigation Receiver Assembly*	U0100	X	-	←	←
		U0129	X	-	←	←
		U0140	X	-	←	←
		U0155	X	-	←	←
		U0164	X	-	←	←
	Radio and Display Receiver Assembly*	U0100	-	X	←	←
		U0129	-	X	←	←
		U0140	-	X	←	←
		U0155	-	X	←	←
		U0164	-	X	←	←
V Bus	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	←	←	X	←
		U0142	←	←	X	←
		U0155	←	←	X	←
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	←	←	X	←
		U0140	←	←	X	←
		U0155	←	←	X	←
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	←	←	X	←
	Power Steering ECU Assembly	U0100	←	←	←	X
	Power Steering ECU Assembly	U0129	←	←	←	X
	ECM (for 2ZR-FE)	U0129	←	←	←	←
	ECM (for 2ZR-FAE)	U0129	←	←	←	←
	Main Body ECU (Multiplex Network Body ECU)	U0100	←	←	←	←
		U0101	←	←	←	←
		U0120	←	←	X	←
		U0151	←	←	←	←
		U0155	←	←	←	←
		U0164	←	←	←	←
		U0327	←	←	X	←
	Combination Meter Assembly	U0100	←	←	←	←
		U0129	←	←	←	←
		U0131	←	←	←	←
		U0142	←	←	←	←
		U0151	←	←	←	←
	Steering Sensor	-	-	-	-	-

-			Trouble Mode (Open in One CAN Branch Line)
-			V Bus
Output ECU		Output DTC	Main Body ECU Communication Stop Mode Refer to Main Body ECU Communication Stop Mode [08/2013 - ]	Steering Angle Sensor Communication Stop Mode Refer to Steering Angle Sensor Communication Stop Mode [08/2013 - ]	DLC3
V Bus	Airbag Sensor Assembly	-	-	-	-
V Bus	Skid Control ECU (Brake Actuator Assembly) (w/VSC)*	U0100	←	←	←
		U0124	←	←	←
		U0126	←	X	←
	Air Conditioning Amplifier Assembly	U0100	←	←	←
		U0131	←	←	←
		U0142	X	←	←
		U0155	←	←	←
	Navigation Receiver Assembly*	U0100	←	←	←
		U0129	←	←	←
		U0140	X	←	←
		U0155	←	←	←
		U0164	←	←	←
	Radio and Display Receiver Assembly*	U0100	←	←	←
		U0129	←	←	←
		U0140	X	←	←
		U0155	←	←	←
		U0164	←	←	←
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	←	←	←
		U0142	X	←	←
		U0155	←	←	←
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	←	←	←
		U0140	X	←	←
		U0155	←	←	←
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	←	←	←
	Power Steering ECU Assembly	U0100	←	←	←
	Power Steering ECU Assembly	U0129	←	←	←
	ECM (for 2ZR-FE)	U0129	←	←	←
	ECM (for 2ZR-FAE)	U0129	←	←	←
	Main Body ECU (Multiplex Network Body ECU)	U0100	X	←	←
		U0101	X	←	←
		U0120	X	←	←
		U0151	X	←	←
		U0155	X	←	←
		U0164	X	←	←
		U0327	X	←	←
	Combination Meter Assembly	U0100	←	←	←
		U0129	←	←	←
		U0131	←	←	←
		U0142	X	←	←
		U0151	←	←	←
	Steering Sensor	-	-	-	-

HINT:

X: DTC is likely to be output.
←: DTC is unlikely to be output.
-: DTC is not output.
*: DTC U0073 may be stored when communication is lost.

-			Trouble Mode (Open in Both CAN Branch Lines)
-			V Bus
Output ECU		Output DTC	Center Airbag Sensor Communication Stop Mode Refer to Center Airbag Sensor Communication Stop Mode [08/2013 - ]	Brake Actuator (Skid Control ECU) Communication Stop Mode Refer to Brake Actuator (Skid Control ECU) Communication Stop Mode [04/2014 - 08/2015]	Air Conditioning Amplifier Communication Stop Mode Refer to Air Conditioning Amplifier Communication Stop Mode [08/2013 - 08/2016]
V Bus	Airbag Sensor Assembly	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly) (w/ VSC)*	U0100	-	◦	-
		U0124	◦	◦	-
		U0126	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	◦
		U0131	-	-	◦
		U0142	-	-	◦
		U0155	-	-	◦
	Navigation Receiver Assembly*	U0100	-	-	-
		U0129	-	◦	-
		U0140	-	-	-
		U0155	-	-	-
		U0164	-	-	◦
	Radio and Display Receiver Assembly*	U0100	-	-	-
		U0129	-	◦	-
		U0140	-	-	-
		U0155	-	-	-
		U0164	-	-	◦
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
V Bus	Power Steering ECU Assembly	U0100	-	-	-
	Power Steering ECU Assembly	U0129	-	◦	-
	ECM (for 2ZR-FE)	U0129	-	◦	-
	ECM (for 2ZR-FAE)	U0129	-	◦	-
	Main Body ECU (Multiplex Network Body ECU)	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0151	◦	-	-
		U0155	-	-	-
		U0164	-	-	◦
		U0327	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	◦	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	◦	-	-
	Steering Sensor	-	-	-	-

-			Trouble Mode (Open in Both CAN Branch Lines)
-			V Bus
Output ECU		Output DTC	Navigation Receiver Assembly Communication Stop Mode Refer to Navigation Receiver Assembly Communication Stop Mode [08/2013 - ]	Radio Receiver Assembly Communication Stop Mode Refer to Radio Receiver Assembly Communication Stop Mode [08/2013 - ]	Certification ECU Communication Stop Mode Refer to Certification ECU Communication Stop Mode [08/2013 - ]	Power Steering ECU Communication Stop Mode Refer to Power Steering ECU Communication Stop Mode [08/2013 - ]
V Bus	Airbag Sensor Assembly	-	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly) (w/ VSC)*	U0100	-	-	-	-
		U0124	-	-	-	-
		U0126	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-	-
		U0131	-	-	-	◦
		U0142	-	-	-	-
		U0155	-	-	-	-
	Navigation Receiver Assembly*	U0100	◦	-	-	-
		U0129	◦	-	-	-
		U0140	◦	-	-	-
		U0155	◦	-	-	-
		U0164	◦	-	-	-
V Bus	Radio and Display Receiver Assembly*	U0100	-	◦	-	-
		U0129	-	◦	-	-
		U0140	-	◦	-	-
		U0155	-	◦	-	-
		U0164	-	◦	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	◦	-
		U0142	-	-	◦	-
		U0155	-	-	◦	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	◦	-
		U0140	-	-	◦	-
		U0155	-	-	◦	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	◦	-
	Power Steering ECU Assembly	U0100	-	-	-	◦
	Power Steering ECU Assembly	U0129	-	-	-	◦
	ECM (for 2ZR-FE)	U0129	-	-	-	-
	ECM (for 2ZR-FAE)	U0129	-	-	-	-
	Main Body ECU (Multiplex Network Body ECU)	U0100	-	-	-	-
		U0101	-	-	-	-
		U0120	-	-	◦	-
		U0151	-	-	-	-
		U0155	-	-	-	-
		U0164	-	-	-	-
		U0327	-	-	◦	-
	Combination Meter Assembly	U0100	-	-	-	-
		U0129	-	-	-	-
		U0131	-	-	-	◦
		U0142	-	-	-	-
		U0151	-	-	-	-
	Steering Sensor	-	-	-	-	-

-			Trouble Mode (Open in Both CAN Branch Lines)
-			V Bus
Output ECU		Output DTC	Main Body ECU Communication Stop Mode Refer to Main Body ECU Communication Stop Mode [08/2013 - ]	Steering Angle Sensor Communication Stop Mode Refer to Steering Angle Sensor Communication Stop Mode [08/2013 - ]	DLC3
V Bus	Airbag Sensor Assembly	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly) (w/ VSC)*	U0100	-	-	-
		U0124	-	-	-
		U0126	-	◦	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	◦	-	-
		U0155	-	-	-
	Navigation Receiver Assembly*	U0100	-	-	-
		U0129	-	-	-
		U0140	◦	-	-
		U0155	-	-	-
		U0164	-	-	-
	Radio and Display Receiver Assembly*	U0100	-	-	-
		U0129	-	-	-
		U0140	◦	-	-
		U0155	-	-	-
		U0164	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	◦	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	◦	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-
	ECM (for 2ZR-FE)	U0129	-	-	-
	ECM (for 2ZR-FAE)	U0129	-	-	-
V Bus	Main Body ECU (Multiplex Network Body ECU)	U0100	◦	-	-
		U0101	◦	-	-
		U0120	◦	-	-
		U0151	◦	-	-
		U0155	◦	-	-
		U0164	◦	-	-
		U0327	◦	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	◦	-	-
		U0151	-	-	-
	Steering Sensor	-	-	-	-

HINT:

◦: DTC is output.
-: DTC is not output.
*: DTC U0073 may be stored when communication is lost.

-			Trouble Mode (Open in One CAN Main Bus Line)
-			V Bus
Output ECU		Output DTC	ECM Communication Stop Mode Refer to ECM Communication Stop Mode [08/2013 - 08/2016]	No. 2 CAN Junction Connector to No. 3 CAN Junction Connector	Combination Meter ECU Communication Stop Mode Refer to Combination Meter ECU Communication Stop Mode [08/2013 - ]
V Bus	Airbag Sensor Assembly	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly) (w/ VSC)*	U0100	X	←	←
		U0124	←	X	←
		U0126	←	X	←
	Air Conditioning Amplifier Assembly	U0100	X	X	←
		U0131	←	←	←
		U0142	←	←	←
		U0155	←	←	X
	Navigation Receiver Assembly*	U0100	X	X	←
		U0129	←	X	←
		U0140	←	←	←
		U0155	←	←	X
		U0164	←	←	←
	Radio and Display Receiver Assembly*	U0100	X	X	←
		U0129	←	X	←
		U0140	←	←	←
		U0155	←	←	X
		U0164	←	←	←
V Bus	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	X	X	←
		U0142	←	←	←
		U0155	←	←	X
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	X	X	←
		U0140	←	←	←
		U0155	←	←	X
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	X	X	←
	Power Steering ECU Assembly	U0100	X	X	←
	Power Steering ECU Assembly	U0129	←	X	←
	ECM (for 2ZR-FE)	U0129	X	←	←
	ECM (for 2ZR-FAE)	U0129	X	←	←
	Main Body ECU (Multiplex Network Body ECU)	U0100	X	X	←
		U0101	X	X	←
		U0120	←	←	←
		U0151	←	←	←
		U0155	←	←	X
		U0164	←	←	←
		U0327	←	←	←
	Combination Meter Assembly	U0100	X	X	←
		U0129	←	X	←
		U0131	←	←	←
		U0142	←	←	X
		U0151	←	←	←
	Steering Sensor	-	-	-	-

HINT:

X: DTC is likely to be output.
←: DTC is unlikely to be output.
-: DTC is not output.
*: DTC U0073 may be stored when communication is lost.

-			Trouble Mode (Open in Both CAN Main Bus Lines)
-			V Bus
Output ECU		Output DTC	ECM Communication Stop Mode Refer to ECM Communication Stop Mode [08/2013 - 08/2016]	No. 2 CAN Junction Connector to No. 3 CAN Junction Connector	Combination Meter ECU Communication Stop Mode Refer to Combination Meter ECU Communication Stop Mode [08/2013 - ]
V Bus	Airbag Sensor Assembly	-	-	-	-
V Bus	Skid Control ECU (Brake Actuator Assembly) (w/ VSC)*	U0100	◦	-	-
		U0124	-	◦	-
		U0126	-	◦	-
	Air Conditioning Amplifier Assembly	U0100	◦	◦	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	◦
	Navigation Receiver Assembly*	U0100	◦	◦	-
		U0129	-	◦	-
		U0140	-	-	-
		U0155	-	-	◦
		U0164	-	-	-
	Radio and Display Receiver Assembly*	U0100	◦	◦	-
		U0129	-	◦	-
		U0140	-	-	-
		U0155	-	-	◦
		U0164	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	◦	◦	-
		U0142	-	-	-
		U0155	-	-	◦
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	◦	◦	-
		U0140	-	-	-
		U0155	-	-	◦
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	◦	◦	-
	Power Steering ECU Assembly	U0100	◦	◦	-
	Power Steering ECU Assembly	U0129	-	◦	-
	ECM (for 2ZR-FE)	U0129	◦	-	-
	ECM (for 2ZR-FAE)	U0129	◦	-	-
	Main Body ECU (Multiplex Network Body ECU)	U0100	◦	◦	-
		U0101	◦	◦	-
		U0120	-	-	-
		U0151	-	-	-
		U0155	-	-	◦
		U0164	-	-	-
		U0327	-	-	-
	Combination Meter Assembly	U0100	◦	◦	◦
		U0129	-	-	◦
		U0131	-	-	◦
		U0142	-	-	◦
		U0151	-	-	◦
	Steering Sensor	-	-	-	-

HINT:

◦: DTC is output.
-: DTC is not output.
*: DTC U0073 may be stored when communication is lost.

-			Trouble Mode (CAN Bus Lines Short Circuit or Short to GND)
-			V Bus
Output ECU		Output DTC	CANH to CANL	CANH to Ground Short	CANL to Ground Short
V Bus	Airbag Sensor Assembly	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly) (w/ VSC)*	U0100	◦	◦	◦
		U0124	◦	◦	◦
		U0126	◦	◦	◦
	Air Conditioning Amplifier Assembly	U0100	◦	◦	◦
		U0131	◦	◦	◦
		U0142	◦	◦	◦
		U0155	◦	◦	◦
	Navigation Receiver Assembly*	U0100	◦	◦	◦
		U0129	◦	◦	◦
		U0140	◦	◦	◦
		U0155	◦	◦	◦
		U0164	◦	◦	◦
	Radio and Display Receiver Assembly*	U0100	◦	◦	◦
		U0129	◦	◦	◦
		U0140	◦	◦	◦
		U0155	◦	◦	◦
		U0164	◦	◦	◦
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	◦	◦	◦
		U0142	◦	◦	◦
		U0155	◦	◦	◦
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	◦	◦	◦
		U0140	◦	◦	◦
		U0155	◦	◦	◦
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	◦	◦	◦
	Power Steering ECU Assembly	U0100	◦	◦	◦
	Power Steering ECU Assembly	U0129	◦	◦	◦
	ECM (for 2ZR-FE)	U0129	◦	◦	◦
	ECM (for 2ZR-FAE)	U0129	◦	◦	◦
	Main Body ECU (Multiplex Network Body ECU)	U0100	◦	◦	◦
		U0101	◦	◦	◦
		U0120	◦	◦	◦
		U0151	◦	◦	◦
		U0155	◦	◦	◦
		U0164	◦	◦	◦
		U0327	◦	◦	◦
V Bus	Combination Meter Assembly	U0100	◦	◦	◦
		U0129	◦	◦	◦
		U0131	◦	◦	◦
		U0142	◦	◦	◦
		U0151	◦	◦	◦
	Steering Sensor	-	-	-	-

HINT:

◦: DTC is output.
-: DTC is not output.
*: DTC U0073 may be stored when communication is lost.

CAN BUS WAVEFORMS

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

This waveform is measured between terminals CANH and GND, and terminals CANL and GND of the DLC3. (Use this as a reference for diagnosis of CAN communication lines.)
When malfunctions in multiple ECUs are suspected based on the CAN bus check and DTCs checked using the Techstream, check the resistance of the CAN bus using an ohmmeter first. If no problems are found, check the following waveforms.
Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ]
If a waveform is not similar to one of the following 3 patterns (Group 1), then an open in a CAN main bus line, an open in a CAN branch line, or a short between a CAN line (CANH or CANL) and ground is suspected (Group 2).
Wiggle the connector and wire harness to check if the waveform changes.

CAN bus waveforms (Group 1)

Normal waveform

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Open in both of the lines (CANH and CANL) of a CAN branch

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

Waveforms (waveforms shown using dotted lines) are not present from an ECU or sensor connected to a CAN branch with an open circuit in both lines. (Waveforms from other ECUs or sensors are normal.)
Because this waveform is similar to a normal waveform, instead of using the waveform, the malfunctioning part can be narrowed down by performing a CAN bus check.

Short between the CAN bus lines (CANH and CANL)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

Waveforms disappear.
If the malfunction is in an ECU, disconnecting the ECU will change the waveform. If the waveform does not change, a malfunction in the wire harness is suspected.

CAN bus waveforms (reference) (Group 2)

NOTE:

The following CAN bus waveforms can be used only as reference. The actual measured waveform may differ significantly depending on the location of the open or short circuit.

Open in a CAN branch line (CANH)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

An abnormal waveform is output from an ECU with an open in one of its CAN branch lines. Because this abnormal output interferes with the signals from other ECUs, the output of other ECUs will also appear abnormal.
Narrow down the malfunctioning part by checking DTCs or performing a CAN bus check, or by checking waveform changes when ECUs or sensors are disconnected. The waveform will change to one for an open in both sides of a CAN branch when the ECU or sensor with an open CAN branch line is disconnected.

Open in a CAN branch line (CANL)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

An abnormal waveform is output from an ECU with an open in one of its CAN branch lines. Because this abnormal output interferes with the signals from other ECUs, the output of other ECUs will also appear abnormal.
Narrow down the malfunctioning part by checking DTCs or performing a CAN bus check, or by checking waveform changes when ECUs or sensors are disconnected. The waveform will change to one for an open in both sides of a CAN branch when the ECU or sensor with an open CAN branch line is disconnected.

Open in a CAN main bus line (CANH)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

Waveforms of ECUs or sensors that are closer to the DLC3 than the open part are almost normal.
Waveforms of ECUs or sensors that are on the opposite side of the DLC3 from the open part are abnormal.
An open in a CAN main bus line can be confirmed by measuring the resistance between the CANH and CANL terminals of any CAN branch.

Short between a CAN bus line (CANH) and ground

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

Narrow down the shorted part by checking for waveform changes when disconnecting connectors from the CAN junction connectors or when disconnecting ECUs or sensors.
A short to ground in the CANH line can be confirmed by measuring the resistance between CANH and ground using an ohmmeter.

Short between a CAN bus line (CANL) and ground

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

Narrow down the shorted part by checking for waveform changes when disconnecting connectors from the CAN junction connectors or when disconnecting ECUs or sensors.
A short to ground in the CANL line can be confirmed by measuring the resistance between CANL and ground using an ohmmeter.

DATA SENDING/RECEIVING TABLE

Data sending/receiving table

HINT:

If Data List items related to sent/received data are not displayed properly, the part for which communication is interrupted can be determined using the table below.

Data content	Data Detected and Sent by	Data Received by (Can be Checked in Data List)	Data Received by (Cannot be Checked in Data List)	Relevant Data List Item [Selected System]
Accelerator position	ECM	Skid control ECU (brake actuator assembly)*5	Skid control ECU (brake actuator assembly)*6	Accelerator Position [Engine and ECT] Accelerator Opening Angle % [ABS/VSC/TRAC]
Engine speed	ECM	Skid control ECU (brake actuator assembly)*5 Power steering ECU assembly Certification ECU (smart key ECU assembly) Combination meter assembly	Air conditioning amplifier assembly Airbag sensor assembly Navigation receiver assembly Radio and display receiver assembly Main body ECU (multiplex network body ECU) Skid control ECU (brake actuator assembly)*6	Engine Speed [Engine and ECT] Engine Revolutions [ABS/VSC/TRAC] Engine Revolution [EMPS] Engine Condition [Power Source Control] Engine Rpm [Combination Meter]
Engine coolant temperature	ECM	Air conditioning amplifier assembly Combination meter assembly	Certification ECU (smart key ECU assembly)	Coolant Temp [Engine and ECT] Engine Coolant Temp [Air Conditioner] Coolant Temperature [Combination Meter]
Vehicle speed	Skid control ECU (brake actuator assembly)	ECM Power steering ECU assembly Combination meter assembly*3 Navigation receiver assembly Radio and display receiver assembly	Airbag sensor assembly	Vehicle Speed [Engine and ECT] Vehicle Speed [ABS/VSC/TRAC] Meter Vehicle Velocity [EMPS] Vehicle Speed Meter [Combination Meter] Vehicle Speed [Navigation System]
Vehicle speed	Combination meter assembly*3	Certification ECU (smart key ECU assembly)	Air conditioning amplifier assembly Main body ECU (multiplex network body ECU)	Vehicle Speed Meter [Combination Meter] Vehicle Speed Signal [Power Source Control]
Wheel speed	Skid control ECU (brake actuator assembly)	-	ECM Power steering ECU assembly Airbag sensor assembly	FR Wheel Speed [ABS/VSC/TRAC] FL Wheel Speed [ABS/VSC/TRAC] RR Wheel Speed [ABS/VSC/TRAC] RL Wheel Speed [ABS/VSC/TRAC]
Shift position	ECM	Navigation receiver assembly Radio and display receiver assembly Certification ECU (smart key ECU assembly)	Combination meter assembly*2 Airbag sensor assembly Main body ECU (multiplex network body ECU)	Neutral Position SW Signal [Engine and ECT] Reverse Signal [Navigation System] Shift P Signal [Power Source Control]
Ambient temperature	Air conditioning amplifier assembly	ECM	Main body ECU (multiplex network body ECU) Navigation receiver assembly Radio and display receiver assembly	Ambient Temp for A/C [Engine and ECT] Ambient Temp Sensor [Air Conditioner]
Driver door courtesy switch	Main body ECU (multiplex network body ECU)	-	Certification ECU (smart key ECU assembly) Combination meter assembly*2	FL Door Courtesy SW [Main Body]
Steering angle sensor*5	Steering sensor	Skid control ECU (brake actuator assembly) Power steering ECU assembly	Airbag sensor assembly	Steering Angle Sensor [ABS/VSC/TRAC] Steering Angle Sens Sig [EMPS]
Yaw rate sensor	Airbag sensor assembly	Skid control ECU (brake actuator assembly)*5	Power steering ECU assembly	Yaw Rate Sensor [ABS/VSC/TRAC]
Deceleration sensor	Airbag sensor assembly	Skid control ECU (brake actuator assembly)*5	ECM Power steering ECU assembly	Deceleration Sensor [ABS/VSC/TRAC] Deceleration Sensor2 [ABS/VSC/TRAC] Lateral G [ABS/VSC/TRAC] Forward and Rearward G [ABS/VSC/TRAC]
ECM power source voltage*1	ECM	-	-	Battery Voltage [Engine and ECT]
Combination meter assembly power source voltage*1	Combination meter assembly	-	-	+B Voltage Value [Combination Meter]
Skid control ECU (brake actuator assembly) power source voltage*1	Skid control ECU (brake actuator assembly)	-	-	IG1 Voltage Value [ABS/VSC/TRAC]
Power steering ECU assembly power source voltage*1	Power steering ECU assembly	-	-	IG Power Supply [EMPS]
Navigation receiver assembly power source voltage*1	Navigation receiver assembly	-	-	Battery Voltage [Navigation System]
Radio and display receiver assembly power source voltage*1	Radio and display receiver assembly	-	-	Battery Voltage [Navigation System]
Solar sensor14	Air conditioning amplifier assembly	-	-	Solar Sensor (D side) [Air Conditioner]
Driver door touch sensor*1	Certification ECU (smart key ECU assembly)	-	-	D-Door Touch Sensor [Smart Key]

*1: Whether the ECU that sends data is functioning or not can be judged by using the Techstream to check items such as switches or sensors that send signals to the ECU via direct lines.

*2: Although the received contents cannot be checked in the Data List, whether or not the data is received normally can be checked by observing the combination meter assembly.

*3: The combination meter assembly receives a vehicle speed signal from the skid control ECU (brake actuator assembly) and sends the signal to other ECUs.

*4: w/ Automatic air Conditioning System

*5: w/ VSC

*6: w/o VSC

Details of relevant Data List items (Selected system: Engine and ECT) (for 2ZR-FE)

HINT:

Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

NOTE:

In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

HINT:

Normal Condition: If no conditions are specifically stated for "idling", the shift lever should be in N (neutral) or P, the A/C switch should be off and all accessory switches should be off.

Warm up the engine.
Turn the A/C switch off.
Turn the ignition switch off.
Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Enter the following menus: Powertrain / Engine and ECT / Data List.

According to the display on the Techstream, read the "Data List".

Powertrain > Engine and ECT > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Vehicle Speed	Vehicle speed	Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph)	Actual vehicle speed	This is the current vehicle speed. The vehicle speed is detected using the wheel speed sensors. Vehicle speed data is delayed when it is displayed. Therefore, even if the vehicle speed listed in the freeze frame data is 0 km/h (0 mph), this does not always mean that the malfunction occurred when the vehicle was stopped.
Engine Speed	Engine speed	Min.: 0 rpm, Max.: 16383 rpm	700 to 800 rpm: Idling (for CVT, A/T models) 600 to 700 rpm: Idling (for M/T models)	When the crankshaft position sensor is malfunctioning, "Engine Speed" is approximately 0 rpm or varies greatly from the actual engine speed.
Coolant Temp	Coolant temperature	Min.: -40°C (-40°F), Max.: 140°C (284°F)	75 to 100°C (167 to 212°F): After warming up	This is the engine coolant temperature. HINT: After warming up the engine, the engine coolant temperature is 75 to 100°C (167 to 212°F). After a long soak, the engine coolant temperature, intake air temperature and ambient air temperature are approximately equal. If the value is -40°C (-40°F), or higher than 135°C (275°F), the sensor circuit is open or shorted. Check if the engine overheats when the value indicates higher than 135°C (275°F).
Battery Voltage	Battery voltage	Min.: 0 V, Max.: 65.535 V	11 to 14 V: Idling	If 11 V or less, characteristics of some electrical components may change.
Accelerator Position	Accelerator pedal position	Min.: 0%, Max.: 399.9%	Actual accelerator pedal position	This is the accelerator pedal position defined using the learned fully released position (sensor output) of accelerator pedal position sensor No. 1 as 0% and the fully depressed position as 100%.
Neutral Position SW Signal	Neutral Position SW Signal	ON or OFF	ON: Shift lever in P or N (neutral)	-
Ambient Temp for A/C	Ambient temperature for A/C	Min.: -40°C (-40°F), Max.: 215°C (419°F)	-	-

Details of relevant Data List items (Selected system: Engine and ECT) (for 2ZR-FAE)

HINT:

NOTE:

In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

HINT:

Normal Condition: If no conditions are specifically stated for "idling", the shift lever should be in N or P, the A/C switch should be off and all accessory switches should be off.

Warm up the engine.
Turn the A/C switch off.
Turn the ignition switch off.
Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Enter the following menus: Powertrain / Engine and ECT / Data List.

According to the display on the Techstream, read the "Data List".

Powertrain > Engine and ECT > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Vehicle Speed	Vehicle speed	Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph)	Actual vehicle speed	This is the current vehicle speed. The vehicle speed is detected using the wheel speed sensors. Vehicle speed data is delayed when it is displayed. Therefore, even if the vehicle speed listed in the freeze frame data is 0 km/h (0 mph), this does not always mean that the malfunction occurred when the vehicle was stopped.
Engine Speed	Engine speed	Min.: 0 rpm, Max.: 16383 rpm	700 to 800 rpm: Idling	When the crankshaft position sensor is malfunctioning, "Engine Speed" is approximately 0 rpm or varies greatly from the actual engine speed.
Coolant Temp	Coolant temperature	Min.: -40°C (-40°F), Max.: 140°C (284°F)	75 to 100°C (167 to 212°F): After warming up	This is the engine coolant temperature. HINT: After warming up the engine, the engine coolant temperature is 75 to 100°C (167 to 212°F). After a long soak, the engine coolant temperature, intake air temperature, engine oil temperature and ambient air temperature are approximately equal. If the value is -40°C (-40°F), or higher than 135°C (275°F), the sensor circuit is open or shorted. Check if the engine overheats when the value indicates higher than 135°C (275°F).
Battery Voltage	Battery voltage	Min.: 0 V, Max.: 65.535 V	11 to 14 V: Idling	If 11 V or less, characteristics of some electrical components may change.
Accelerator Position	Accelerator pedal position	Min.: 0%, Max.: 399.9%	Actual accelerator pedal position	This is the accelerator pedal position defined using the learned fully released position (sensor output) of accelerator pedal position sensor No. 1 as 0% and the fully depressed position as 100%.
Neutral Position SW Signal	Park/Neutral position switch	ON or OFF	ON: Shift lever in P or N	-
Ambient Temp for A/C	Ambient temperature for A/C	Min.: -40°C (-40°F), Max.: 215°C (419°F)	-	-

Details of relevant Data List items (Selected system: ABS/VSC/TRAC) (w/o VSC)

HINT:

NOTE:

In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

Warm up the engine.
Turn the ignition switch off.
Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Enter the following menus: Chassis / ABS/VSC/TRAC / Data List.

According to the display on the Techstream, read the "Data List".

Chassis > ABS/VSC/TRAC > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
FR Wheel Speed	Front wheel speed sensor RH reading	Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)	Vehicle stopped: 0 km/h (0 mph)	When driving at constant speed: No large fluctuations
FL Wheel Speed	Front wheel speed sensor LH reading	Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)	Vehicle stopped: 0 km/h (0 mph)	When driving at constant speed: No large fluctuations
RR Wheel Speed	Rear wheel speed sensor RH reading	Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)	Vehicle stopped: 0 km/h (0 mph)	When driving at constant speed: No large fluctuations
RL Wheel Speed	Rear wheel speed sensor LH reading	Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)	Vehicle stopped: 0 km/h (0 mph)	When driving at constant speed: No large fluctuations
Vehicle Speed	Maximum wheel speed sensor reading	Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)	Vehicle stopped: 0 km/h (0 mph)	When driving at constant speed: No large fluctuations
IG1 Voltage Value	IG1 voltage value	Min.: 0.00 V, Max.: 20.00 V	Ignition switch ON: 11.00 to 14.00 V	Changes in proportion to battery voltage

Details of relevant Data List items (Selected system: ABS/VSC/TRAC) (w/ VSC)

HINT:

NOTE:

In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

Warm up the engine.
Turn the ignition switch off.
Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Enter the following menus: Chassis / ABS/VSC/TRAC / Data List.

According to the display on the Techstream, read the "Data List".

Chassis > ABS/VSC/TRAC > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Deceleration Sensor	Acceleration sensor reading	Min.: -18.525 m/s² , Max.: 18.387 m/s²	-	During deceleration/acceleration: Changes continuously
Deceleration Sensor2	Acceleration sensor 2 reading	Min.: -18.525 m/s² , Max.: 18.387 m/s²	-	During deceleration/acceleration: Changes continuously
Yaw Rate Sensor	Yaw rate sensor	Min.: -128°/s Max.: 127°/s	Vehicle stopped: 0°/s Turning right: -128 to 0°/s Turning left: 0 to 127°/s	-
Steering Angle Sensor	Steering angle sensor	Min.: -3276.8°, Max.: 3276.7°	Turning left: Increases Turning right: Decreases	-
Lateral G	Lateral G	Min.: -25.10 m/s² , Max.: 24.90 m/s²	-	During turning: Changes in proportion with acceleration
Forward and Rearward G	Forward and backward G	Min.: -25.10 m/s² , Max.: 24.90 m/s²	-	During acceleration/deceleration: Changes in proportion with acceleration
FR Wheel Speed	Front wheel speed sensor RH reading	Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)	Vehicle stopped: 0 km/h (0 mph)	When driving at constant speed: No large fluctuations
FL Wheel Speed	Front wheel speed sensor LH reading	Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)	Vehicle stopped: 0 km/h (0 mph)	When driving at constant speed: No large fluctuations
RR Wheel Speed	Rear wheel speed sensor RH reading	Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)	Vehicle stopped: 0 km/h (0 mph)	When driving at constant speed: No large fluctuations
RL Wheel Speed	Rear wheel speed sensor LH reading	Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)	Vehicle stopped: 0 km/h (0 mph)	When driving at constant speed: No large fluctuations
Vehicle Speed	Maximum wheel speed sensor reading	Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)	Vehicle stopped: 0 km/h (0 mph)	When driving at constant speed: No large fluctuations
Engine Revolutions	Engine speed	Min.: 0 rpm, Max.: 65535 rpm	Engine stopped: 0 rpm	When engine speed is constant: No large fluctuations
Accelerator Opening Angle %	Percentage of accelerator pedal opening angle	Min.: 0.0%, Max.: 128.0%	Accelerator pedal released: 0.0%	During accelerator pedal operation: Changes in proportion with the pedal movement
IG1 Voltage Value	IG1 voltage value	Min.: 0.00 V, Max.: 20.00 V	Ignition switch ON: 11.00 to 14.00 V	Changes in proportion to battery voltage

Details of relevant Data List items (Selected system: EMPS)

HINT:

NOTE:

In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

Turn the ignition switch off.
Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Enter the following menus: Chassis / EMPS / Data List.

According to the display on the Techstream, read the "Data List".

Chassis > EMPS > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Meter Vehicle Velocity	Vehicle speed from speedometer	Min.: 0.0 km/h (0.0 MPH) Max.: 300.0 km/h (186.4 MPH)	0 km/h (0 MPH): Engine running and vehicle stopped No significant fluctuation: Engine running and vehicle driven at constant speed	-
Engine Revolution	Engine speed	Min.: 0 rpm Max.: 12800 rpm	No significant fluctuation	Engine running at a constant speed
IG Power Supply	IG power source voltage	Min.: 0.0000 V Max.: 20.1531 V	8 to 16 V	Ignition switch ON
Steering Angle Sens Sig	Steering angle sensor signal state	OK or NG(1) or NG(2) or NG(3)	OK: Steering angle sensor signal received NG(1): The learning has not completed NG(2): Steering angle sensor abnormal NG(3): Communication Error	-

Details of relevant Data List items (Selected system: Combination Meter)

HINT:

NOTE:

In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

Warm up the engine.
Turn the ignition switch off.
Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Enter the following menus: Body Electrical / Combination Meter / Data List.

According to the display on the Techstream, read the "Data List".

Body Electrical > Combination Meter > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Vehicle Speed Meter	Vehicle speed	Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph)	Almost the same as actual vehicle speed	-
Engine Rpm	Engine speed	Min.: 0 rpm, Max.: 12750 rpm	for 2ZR-FAE: 700 to 800 rpm: Idling for 2ZR-FE: 700 to 800 rpm: Idling (for CVT and A/T models) 600 to 700 rpm: Idling (for M/T models)	-
Coolant Temperature	Engine coolant temperature	Min.: 0°C (32°F), Max.: 127.5°C (261.5°F)	75 to 100 °C (167 to 212°F) (After warming up engine)	-
+B Voltage Value	Battery voltage	Min.: 0 V, Max.: 25.5 V	11 to 14 V	-

Details of relevant Data List items (Selected system: Power Source Control)

HINT:

NOTE:

In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

Turn the ignition switch off.
Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Enter the following menus: Body Electrical / Power Source Control / Data List.

According to the display on the Techstream, read the "Data List".

Body Electrical > Power Source Control > Data List

Tester Display	Measurement Item	Normal Condition	Reference Value	Diagnostic Note
Shift P Signal	Shift position P*	ON or OFF	ON: Shift lever in P OFF: Shift lever not in P	Use this item to determine if the shift position switch is malfunctioning. The engine cannot be started when this item is OFF.
Engine Condition	Engine state	Stop or Run	Stop: Engine stopped Run: Engine running	-
Vehicle Speed Signal	Vehicle being driven or stopped	Stop or Run	Stop: Vehicle stopped Run: Vehicle being driven at 5 km/h (3 mph) or more	-

*: except Manual Transaxle

Details of relevant Data List items (Selected system: Air Conditioner)

HINT:

NOTE:

In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

Turn the ignition switch off.
Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Enter the following menus: Body Electrical / Air Conditioner / Data List.

According to the display on the Techstream, read the "Data List".

Body Electrical > Air Conditioner > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Ambient Temp Sensor	Thermistor assembly	Min.: -23.30°C (-9.94°F) Max.: 65.95°C (150.71°F)	Actual ambient temperature displayed	-
Solar Sensor (D Side)	Cooler (solar sensor) thermistor	Min.: 0 Max.: 255	Cooler (solar sensor) thermistor value increases as brightness increases	*
Engine Coolant Temp	Engine coolant temperature sensor	Min.: 1.30°C (34.34°F) Max.: 90.55°C (194.99°F)	Actual engine coolant temperature displayed	-

*: w/ Automatic Air Conditioning System

Details of relevant Data List items (Selected system: Navigation System)

HINT:

NOTE:

In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

Turn the ignition switch off.
Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Enter the following menus: Body Electrical / Navigation System / Data List.

According to the display on the Techstream, read the "Data List".

Body Electrical > Navigation System > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Battery Voltage	Battery voltage	Min.: 0 V, Max.: 24 V	11 to 14 V	-
Reverse Signal	Reverse signal	ON or OFF	ON: Shift lever in R OFF: Shift lever in any position other than R	-
Vehicle Speed	Maximum wheel speed sensor reading	Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph)	Vehicle stopped: 0 km/h (0 mph)	When driving at constant speed: No large fluctuations

Details of relevant Data List items (Selected system: Main Body)

HINT:

NOTE:

In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

Turn the ignition switch off.
Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Enter the following menus: Body Electrical / Main Body / Data List.

According to the display on the Techstream, read the "Data List".

Body Electrical > Main Body > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
FL Door Courtesy SW	Front door courtesy light switch assembly (LH) signal	ON or OFF	ON: Front door LH open OFF: Front door LH closed	-

Details of relevant Data List items (Selected system: Smart Key)

NOTE:

In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

HINT:

Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.
When using the Techstream with the ignition switch off to troubleshoot:
Connect the Techstream to the DLC3 and turn a courtesy light switch on and off at 1.5-second intervals until communication between the Techstream and vehicle begins.

Turn the ignition switch off.
Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Enter the following menus: Body Electrical / Smart Key / Data List.

According to the display on the Techstream, read the "Data List".

Body Electrical > Smart Key > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
D-Door Touch Sensor	Driver door touch sensor (unlock sensor)*	OFF or ON	OFF: Driver door touch sensor (unlock sensor) not touched ON: Driver door touch sensor (unlock sensor) touched	Displays whether the unlock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily). Use this Data List item to help determine if there is an unlock sensor malfunction when the entry unlock function does not operate.

*: Data from an actual vehicle provided for reference.