System Description [08/2019 - ]

MULTI CHANNEL FUNCTION
1. The electrical key transmitter sub-assembly and door control receiver can operate on two different RF channels. When an electrical key transmitter sub-assembly is brought within an exterior detection area, key verification begins. If key verification fails due to wave interference, the channel will be switched and key verification will be performed again.
  The multi channel system begins verification using the channel on which the last verification was successfully performed. When verification fails, the system switches to the other channel.

SMART ACCESS SYSTEM WITH PUSH-BUTTON START SPECIFICATIONS

Some customers may inquire about the frequency used by the smart access system with push-button start on various models. This service information contains the applicable specifications of the smart access system with push-button start.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Transmitter Detection Area

SPECIFICATIONS FOR SMART ACCESS SYSTEM WITH PUSH-BUTTON START ANTENNA LF OUTPUT POWER

	Specification
	Frequency	Output Power/Electric Field Intensity	Modulation Method	Mounting Point in Vehicle
Inside Passenger Compartment	134.2 kHz	94.4 dBuV/m at 3 m	AM	Inside vehicle
Outside Vehicle	134.2 kHz	95 dBuV/m at 3 m	AM	Inside door handle
Outside Vehicle	134.2 kHz	95 dBuV/m at 3 m	AM	Inside rear bumper

SPECIFICATIONS FOR SMART ACCESS SYSTEM WITH PUSH-BUTTON START ANTENNA LF TRANSMISSION TIMING

	Transmission Timing
	Vehicle Remains Parked	Entering or Exiting the Vehicle	Vehicle is being Driven
Inside Passenger Compartment	Does not transmit	Operating door locks Operating power switch / depressing brake pedal Opening or closing doors With power switch on (IG) or power switch on (ACC), and shift lever in P, closing any door when electrical key transmitter sub-assembly cannot be detected inside vehicle (continues for 3 seconds until electrical key transmitter sub-assembly is detected or power switch is turned off) Power switch is off after driving for more than 20 minutes With shift lever not in P, closing any door when electrical key transmitter sub-assembly cannot be detected inside vehicle (continues for 3 seconds until electrical key transmitter sub-assembly is detected)	When electrical key transmitter sub-assembly is not detected inside cabin while vehicle is being driven (transmits for 4 seconds)
Outside Vehicle	(1) When door is locked, transmits at 250 ms intervals (stops when door is unlocked) (2) Does not transmit	(1) Touch the lock sensor (2) Pressing back door opener switch assembly (3) Touching unlock sensor in power saving mode	Does not transmit

BASIC PRECAUTIONS
1. DTCs and Data Lists of ECUs related to the smart access system with push-button start can be checked using the Techstream.
2. Check for DTCs using the following procedure. If any DTCs are output, diagnose those DTCs first.
  1. Connect the Techstream to the DLC3.
  2. Turn the power switch on (IG).
  3. Enter the following menus: Body Electrical / Smart Access, Power Source Control or Starting Control / Trouble Codes.
3. When using the Techstream with the power switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Access. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
4. If the smart access system with push-button start has been canceled by a customize setting, enable the smart access system with push-button start.
  Refer to CUSTOMIZE PARAMETERS [08/2019 - ]
DIAGRAM OF SMART ACCESS SYSTEM WITH PUSH-BUTTON START

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

SYSTEM DESCRIPTION

The following pattern will be used: "Operation" indicates user operation using the smart access system with push-button start. "Expected operation of the vehicle" indicates how a known good vehicle will react in accordance with each operation. "Suspected Area/Diagnosis" indicates suspected malfunctioning areas and tips for performing diagnosis if the vehicle did not react as expected.

Example: Operation No.

Operation	-
Expected operation of the vehicle	-
Waveform or Output Value	-

Suspected Area	Diagnosis
-	-

DIAGNOSIS IN ACCORDANCE WITH USER OPERATION

Operation 1

Operation

Turn the power switch off and lock all the doors, then take the electrical key transmitter sub-assembly approximately 3 m (9.84 ft.) or more away from the vehicle.
HINT:
The detection area of each electrical key antenna (outside) is formed by emitting a periodic LF band request signal every 0.25 seconds. The detection area formed by each front door outside handle assembly (electrical key antenna) and rear door outside handle assembly (electrical key antenna) has a detection range of approximately 0.7 m (2.30 ft.).

Waveform or Output Value

Pulse generation (R1-17 (CLG1) - J41-18 (E)*)

*: Refer to TERMINALS OF ECU [10/2015 - ]

Operation 2

Operation	Bring the electrical key transmitter sub-assembly within 0.7 m (2.30 ft.) of the driver door. HINT: The system will enter in unlock standby mode when the electrical key transmitter sub-assembly is brought into the detection area and the key ID code sent by the electrical key transmitter sub-assembly matches the key ID code stored by the certification ECU (smart key ECU assembly). The door unlocks if the unlock sensor is touched by hand with the system in unlock standby mode. Signal transmission: Certification ECU (smart key ECU assembly) → Door outside handle assembly (electrical key antenna) → Electrical key transmitter sub-assembly → Door control receiver → Certification ECU (smart key ECU assembly) → Main body ECU (multiplex network body ECU)
Expected operation of the vehicle	The LED of the electrical key transmitter sub-assembly starts blinking. If it does not, check the suspected areas in the following table.
Waveform or Output Value	Pulse generation (R1-17 (CLG1) - J41-18 (E)) Pulse generation (R1-18 (RCO) - J41-18 (E)) Pulse generation (R1-19 (RDAM) - J41-18 (E)) Pulse generation (R1-20 (CSEL) - J41-18 (E))

*: Refer to TERMINALS OF ECU [10/2015 - ]

Suspected Area	Diagnosis
Electrical key transmitter sub-assembly	The key ID code sent by the electrical key transmitter sub-assembly does not match the key ID code stored in the certification ECU (smart key ECU assembly). Use another electrical key transmitter sub-assembly to check the operation. If the LED of the electrical key transmitter sub-assembly does not blink when it is brought within 0.7 m (2.30 ft.) of the front door outside handle assembly (for driver door), perform the following procedure. Press the lock and unlock switches of the electrical key transmitter sub-assembly to check the operation. If the doors can be locked and unlocked, that means the detection area has not been formed. Parts other than the electrical key transmitter sub-assemblies and door control receiver may be malfunctioning. If the electrical key transmitter sub-assembly is malfunctioning, the hybrid control system cannot be started and the power switch cannot be turned on (ACC) or on (IG). Under normal conditions, the entry warning light is displayed on the multi-information display in the combination meter assembly when the power switch is pressed with the electrical key transmitter sub-assembly in the driver seat area, the shift lever in P and the brake pedal released. If the driver door cannot be opened, use the mechanical key installed in the electrical key transmitter sub-assembly to open the door. HINT: Before replacing the electrical key transmitter sub-assembly, check if the transmitter battery is depleted. If the driver door cannot be opened, use the mechanical key installed in the electrical key transmitter sub-assembly to open the door.
Transmitter battery is depleted	Press and hold the lock switch of the electrical key transmitter sub-assembly for 5 seconds and check the number of times that the LED of the electrical key transmitter sub-assembly blinks. If the LED of the electrical key transmitter sub-assembly does not blink or blinks only once or twice, the transmitter battery may be depleted. If the LED of the electrical key transmitter sub-assembly does not blink at all, the electrical key transmitter sub-assembly may be malfunctioning. If the transmitter battery voltage at the time the electrical key transmitter sub-assembly sends a signal drops to 2.2 V or less, "Yes" is displayed for "Key Low Battery" in the Data List. If the transmitter battery voltage drops to 2.0 V or lower, operation cannot be assured. HINT: The output of the electrical key transmitter sub-assembly will decrease if it is in low temperatures. When the transmitter battery is depleted, the power cannot be started and the power switch cannot be turned on (ACC) or on (IG). If the electrical key transmitter sub-assembly is held near the power switch, the hybrid control system can be started. Make sure that the transmitter battery type and installation direction are correct.
Wave Interference	If the problem occurs in certain locations or times of day, the possibility of wave interference is high. When the electrical key transmitter sub-assembly is malfunctioning, the transmitter battery is depleted, an electrical key transmitter sub-assembly from another vehicle has been used or wave interference is suspected. "Yes" may be displayed for any of the following Data List items: "Unmatch Code or Form", "No Response", "ID Code Difference" or "Unmatched Vehicle-ID"
Certification ECU (smart key ECU assembly)	-
Main body ECU (multiplex network body ECU)	-
Front door outside handle assembly	Vehicle exterior detection area is not formed properly. If the LED of the electrical key transmitter sub-assembly does not blink when it is brought within 0.7 m (2.30 ft.) of the front door outside handle assembly (for driver door), but blinks when it is brought within 0.7 m (2.30 ft.) of the front door outside handle assembly (for front passenger door), the front door outside handle assembly of the driver door may be malfunctioning. Even if the vehicle exterior detection area is not formed properly, the power switch can be turned on (ACC) and the hybrid control system can be started. Formation of the vehicle exterior detection area can be confirmed by using the Techstream. Refer to OPERATION CHECK [08/2019 - ] Even if the vehicle exterior detection area is not formed properly, the doors can be unlocked by pressing the unlock switch of the electrical key transmitter sub-assembly.
Door Control Receiver	If the door control receiver is malfunctioning, it is not possible to unlock the front passenger door and rear door. If the door control receiver is malfunctioning, it is not possible to unlock the doors by a wireless unlock operation. If the door control receiver is malfunctioning, the hybrid control system cannot be started and the power switch cannot be turned on (ACC) or on (IG) unless in an emergency. Formation of the vehicle exterior detection area can be confirmed by using the Techstream. Refer to OPERATION CHECK [08/2019 - ]
Auxiliary battery is discharged	It may be possible to tell whether the auxiliary battery is discharged by operating the horn.
Others	If the smart access system with push-button start function has been canceled through the customize function, the detection area cannot be formed, therefore the LED of the electrical key transmitter sub-assembly will not blink even if the electrical key transmitter sub-assembly is brought near a front door outside handle assembly or rear door outside handle assembly. In the smart access system with push-button start, if the electrical key transmitter sub-assembly is constantly in the exterior detection area of one of the doors, the transmitter battery could be drained. For this reason, if this state continues for longer than 10 minutes, the smart access system with push-button start automatically deactivates the exterior detection area that the electrical key transmitter sub-assembly is in. If the electrical key transmitter sub-assembly is in transmitter battery saving mode, even if it receives LF waves from the vehicle, it will not respond using RF waves, therefore the LED of the electrical key transmitter sub-assembly will not blink. If the electrical key transmitter sub-assembly is left in the vehicle and the doors are locked using another electrical key transmitter sub-assembly, the LED of the electrical key transmitter sub-assembly will not blink even if it is brought near a front door outside handle assembly.

Operation 3

Operation	Touch the unlock sensor of the front door outside handle assembly (for driver door) with the electrical key transmitter sub-assembly in the exterior detection area.
Expected operation of the vehicle	While the doors are unlocked, the answer-back is performed at the same time. If they do not, check the suspected areas in the following table.
Waveform or Output Value	Pulse generation (R1-17 (CLG1) - J41-18 (E)) Tester connection (instrument panel junction block assembly (ACT-) - body ground)

*: Refer to TERMINALS OF ECU [10/2015 - ]

Suspected Area	Diagnosis
The suspected parts below overlap with the parts covered in operation 2 for when the LED of the electrical key transmitter sub-assembly does not blink.	-
Front door outside handle assembly (unlock sensor)	If the doors can be unlocked by touching the unlock sensor of the front door outside handle assembly (for front passenger door) door while carrying the electrical key transmitter sub-assembly, the unlock sensor of the front door outside handle assembly (for driver door) may be malfunctioning. Under normal conditions, "ON" is displayed for the Data List item "D-Door Touch Sensor" when the unlock sensor is touched.
Door lock/unlock mechanism	If a door cannot be locked/unlocked by operating the door control switch on the door in the cabin, the door lock mechanism is malfunctioning.

Operation 4

Operation

After getting into the vehicle while carrying the electrical key transmitter sub-assembly, close the door and press the power switch once with the shift lever in P while not depressing the brake pedal.

Expected operation of the vehicle

The security indicator light turns off, and then the immobiliser function is canceled, allowing the vehicle to be driven.
The steering is unlocked.

If any of the preceding do not happen, check the suspected areas in the following table.HINT: When the power switch is pressed, the indoor electrical key antennas form the key detection area inside the vehicle and detect the electrical key transmitter sub-assembly in the cabin. The electrical key transmitter sub-assembly sends a key ID code upon receiving a request signal and the LED of the electrical key transmitter sub-assembly illuminates for a short time. After pressing the power switch, if the key ID code sent by the electrical key transmitter sub-assembly matches the key ID code stored by the certification ECU (smart key ECU assembly), the ACC relay turns on and entry warning light is displayed on the multi-information display in the combination meter assembly. After the power source mode has changed, and L code and S code verification has been completed, the steering will be unlocked and the immobiliser will be disabled. The Data List item "Immobiliser" will then change from "Set" to "Unset".Signal transmission: Certification ECU (smart key ECU assembly) → Indoor electrical key antenna → Electrical key transmitter sub-assembly → Door control receiver → Certification ECU (smart key ECU assembly)HINT: The interior detection area is formed when any of the following conditions are met:

Any door is opened.
Any of the doors have been opened and closed (formed within approximately 30 seconds).
The brake pedal has been depressed (formed within approximately 30 seconds).
The power switch is pressed.

Waveform or Output Value

Pulse generation (R1-19 (RDAM) - J41-18 (E)*)
Pulse generation (J41-8 (CLG5) - J41-18 (E)*)
Pulse generation (J41-17 (IG1D) - J41-18 (E)*)

*: Refer to TERMINALS OF ECU [10/2015 - ]

Suspected Area	Diagnosis
Certification ECU (smart key ECU assembly)	-
Wave Interference	If malfunctions occur at a specific location/time, wave interference may be the cause. If wave interference is suspected in the cabin, disconnect the connectors of all electronic devices which are not standard equipment, or remove the electronic devices and check for electrical noise.
Indoor electrical key antenna assemblies that form the interior detection areas	If the interior detection area is not formed properly, the hybrid control system cannot be started and the power switch cannot be turned on (ACC) or on (IG). In an emergency the electrical key transmitter sub-assembly can be held near the power switch to the start hybrid control system. Using the Techstream, enter key diagnostic mode to forcibly form the interior detection area. If the electrical key transmitter sub-assembly is brought near the area, short beeps will sound. Refer to OPERATION CHECK [08/2019 - ]
Power switch	Under normal conditions, after the power switch is pressed, "ON" is displayed for the Data List items "Start Switch1" and "Start Switch2".
ID code box (immobiliser code ECU)	In order to unlock the steering, it is necessary for "OK" to be displayed for the Data List item "S Code Check". If "OK" is displayed for "S Code Check", the certification ECU (smart key ECU assembly) code and ID code box (immobiliser code ECU) code match.
Park/neutral position switch assembly	Under normal conditions "ON" is displayed for the Data List item, "Neutral SW/ Clutch SW" when the shift lever is in P.
Steering lock ECU (steering lock actuator or upper bracket assembly)	If "OK" is displayed for the Data List item "L Code Check" when the power switch is turned on (ACC), power will be supplied to the steering motor for approximately 10 seconds. Then the ECU will send an unlock signal to the steering motor and the Data List item "Unlock Request Receive" will temporarily change from "NG" to "OK". After the steering is unlocked, the ECU receives the unlocked signal from the steering motor and the Data List item "Steering Unlock" changes from "Unset" to "Set". In order for the steering to be unlocked, it is necessary that "OK" be displayed for the Data List item "L Code Check" (the ID code stored in the steering lock ECU (steering lock actuator or upper bracket assembly) matches that of the ID code box (immobiliser code ECU))

Operation 5

Operation	Depress the brake pedal with the shift lever in P while carrying an electrical key transmitter sub-assembly.
Expected operation of the vehicle	The entry warning light appears on the multi-information display. If it does not, check the suspected areas in the following table.

Suspected Area	Diagnosis
Stop light switch assembly	If the brake pedal is depressed, "ON" is displayed for the Data List item "Stop Light Switch1".
Certification ECU (smart key ECU assembly)	Start function-Terminals of ECU Refer to TERMINALS OF ECU [10/2015 - ]

Operation 6

Operation	After getting into the vehicle while carrying the electrical key transmitter sub-assembly, press the power switch with the shift lever in P while depressing the brake pedal.
Expected operation of the vehicle	The hybrid control system starts. If it does not, check the suspected areas in the following table.

Suspected Area	Diagnosis
Steering lock system	Under normal conditions, the steering will be unlocked and "ON" will be displayed for the Data List item "Steering Unlock Switch".
Auxiliary battery is discharged	Whether the auxiliary battery is discharged or not can be checked easily by operating the horn.

Operation 7

Operation	Press the power switch.
Expected operation of the vehicle	The hybrid control system stops, the entry warning light illuminates and then turns off and the security indicator light changes from off to blinking.

Operation 8

Operation	Turn the power switch off and open any of the doors.
Expected operation of the vehicle	The steering locks. If it does not, check the suspected areas in the following table.

Suspected Area	Diagnosis
Steering lock system	-
Door courtesy light switch assembly	When the driver door is opened, "ON" is displayed for the Data List item "FL Door Courtesy SW".

Operation 9

Operation	Touch the lock sensor of the front door outside handle assembly (for driver door) while carrying the electrical key transmitter sub-assembly.
Expected operation of the vehicle	The door lock and the answer-back is performed simultaneously.

AUXILIARY BATTERY SAVING FUNCTION
1. When the smart access system with push-button start is operating, the vehicle performs key detection operations every 0.25 seconds. Therefore, if the vehicle is left as is for a long period of time, the auxiliary battery may become fully discharged. The following controls help reduce the rate at which the auxiliary battery is discharged.
  1. If the smart access system with push-button start is not operated for 5 days or more, periodic signal transmission from the electrical key antennas stops. However, the doors can still be unlocked by touching the unlock sensor of a front door outside handle assembly or rear door outside handle assembly.
  2. If the smart access system with push-button start is not operated for 14 days or more, the lock and unlock sensors of the front door outside handle assembly (for front passenger door) and rear door outside handle assemblies will be disabled. Therefore, only the unlock sensor of the front door outside handle assembly (for driver door) can be used to unlock the doors.
  3. If 10 minutes or more elapse while the electrical key transmitter sub-assembly is in an exterior detection area, the front door outside handle assembly (electrical key antenna) or rear door outside handle assembly (electrical key antenna) detecting the electrical key transmitter sub-assembly will stop operating.
2. To restore operation of the smart access system with push-button start, perform any of the following operations.
  1. While carrying the electrical key transmitter sub-assembly, touch the lock or unlock sensor of the front door outside handle assembly (for driver door) and perform a door lock or unlock operation.
  2. Lock or unlock the doors using the wireless function.
  3. Insert the mechanical key into the door key cylinder of the driver door and lock or unlock the doors.
WIRELESS BUZZER VOLUME ADJUSTMENT FUNCTION
1. The volume of the wireless buzzer can be changed through the customize function.
  HINT:
  
  The volume of the following wireless buzzer operations cannot be adjusted.
  - Warning function buzzer operations
  - Customize function buzzer operations
  - Buzzer operations for key diagnostic mode using the Techstream
  - Key registration buzzer operations

WARNING FUNCTION

Warning

Situation: The hybrid control system is left running and the shift lever is in a position other than P when the driver gets out of the vehicle.

There are 2 patterns for this situation.

Pattern 1:

When the hybrid control system is left running and the shift lever is in a position other than P, the driver opens the door and attempts to get out of the vehicle.