Inspection Procedure
- Turn the ignition switch off before measuring the resistances of the CAN main wire and the CAN branch wire.
- After the ignition switch is turned off, check that the key reminder warning system and light reminder warning system are not in operation.
- Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the ignition switch, any other switches or the doors. If the doors need to be opened in order to check the connectors, open the doors and leave them open.
HINT:
- Operating the ignition switch, any other switches, or a door triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change.
- Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below will help determine the cause of the malfunction.
- CHECK FOR SHORT TO B+ IN CAN BUS WIRE (DLC3 BRANCH WIRE)
- Turn the ignition switch off, and Cable is disconnected from negative (-) battery terminal.
- Disconnect the CAN No. 1 junction connector.
- Measure the resistance according to the value (s) in the table below.
Standard Resistance
RESISTANCE SPECIFIED CONDITIONSTester Connection Condition Specified Condition E15-6 (CANH) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher E15-14 (CANL) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher NG: REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO DLC3
OK: Go to Next Step
- CHECK FOR SHORT TO B+ IN CAN BUS WIRE (CAN NO. 2 JUNCTION CONNECTOR)
- Turn the ignition switch off.
- Reconnect the CAN No. 1 junction connector.
- Disconnect the CAN No. 2 junction connector.
- Measure the resistance according to the value (s) in the table below.
Standard Resistance
RESISTANCE SPECIFIED CONDITIONSTester Connection Condition Specified Condition E15-6 (CANH) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher E15-14 (CANL) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: Go to step 6
OK: Go to Next Step
- CHECK FOR SHORT TO B+ IN CAN BUS WIRE (ECM MAIN WIRE)
- Measure the resistance according to the value (s) in the table below.
HINT:
The resistance must be measured after the CAN No. 2 junction connector is disconnected.
Standard Resistance
RESISTANCE SPECIFIED CONDITIONSTester Connection Condition Specified Condition A34-10 (CANH) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher A34-21 (CANL) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher NG: Go to step 5
OK: Go to Next Step
- Measure the resistance according to the value (s) in the table below.
- CHECK FOR SHORT TO B+ IN CAN BUS WIRE (SKID CONTROL ECU BRANCH WIRE)
- Disconnect the skid control ECU connector.
- Measure the resistance according to the value (s) in the table below.
HINT:
The resistance must be measured after the CAN No. 2 junction connector is disconnected.
Standard Resistance
RESISTANCE SPECIFIED CONDITIONSTester Connection Condition Specified Condition A34-8 (CANH) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher A34-19 (CANL) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher Result
RESULT CHARTResult Proceed to OK (w/ VSC) A OK (w/o VSC) B NG C B: REPLACE BRAKE ACTUATOR ASSEMBLY (See REMOVAL )
C: REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (CAN NO. 2 JUNCTION CONNECTOR - SKID CONTROL ECU)
A: REPLACE BRAKE ACTUATOR ASSEMBLY (See REMOVAL )
- CHECK FOR SHORT TO B+ IN CAN BUS WIRE (CAN NO. 2 JUNCTION CONNECTOR ECM)
- Disconnect the ECM connector.
- Measure the resistance according to the value (s) in the table below.
HINT:
The resistance must be measured after the CAN No. 2 junction connector is disconnected.
Standard Resistance
RESISTANCE SPECIFIED CONDITIONSTester Connection Condition Specified Condition A34-10 (CANH) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher A34-21 (CANL) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher Result
RESULT CHARTResult Proceed to OK (for 2ZR-FE) A OK (for 2AZ-FE) B NG C B: REPLACE ECM (See REMOVAL )
C: REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (CAN NO. 2 JUNCTION CONNECTOR - ECM)
A: REPLACE ECM (See REMOVAL )
- CHECK FOR SHORT TO B+ IN CAN BUS WIRE (POWER STEERING ECU BRANCH WIRE)
- Reconnect the CAN No. 2 junction connector.
- Disconnect the CAN No. 1 junction connector.
- Measure the resistance according to the value (s) in the table below.
Standard Resistance
RESISTANCE SPECIFIED CONDITIONSTester Connection Condition Specified Condition E65-3 (CANH) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher E65-14 (CANL) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: Go to step 15
OK: Go to Next Step
- CHECK FOR SHORT TO B+ IN CAN BUS WIRE (STEERING ANGLE SENSOR BRANCH WIRE)
- Measure the resistance according to the value (s) in the table below.
HINT:
The resistance must be measured after the CAN No. 1 junction connector is disconnected.
Standard resistance
RESISTANCE SPECIFIED CONDITIONSTester Connection Condition Specified Condition E65-8 (CANH) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher E65-19 (CANL) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: Go to step 16
OK: Go to Next Step
- Measure the resistance according to the value (s) in the table below.
- CHECK FOR SHORT TO B+ IN CAN BUS WIRE (YAW RATE SENSOR BRANCH WIRE)
- Measure the resistance according to the value (s) in the table below.
HINT:
The resistance must be measured after the CAN No. 1 junction connector is disconnected.
Standard Resistance
RESISTANCE SPECIFIED CONDITIONSTester Connection Condition Specified Condition E65-9 (CANH) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher E65-20 (CANL) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: Go to step 17
OK: Go to Next Step
- Measure the resistance according to the value (s) in the table below.
- CHECK FOR SHORT TO B+ IN CAN BUS WIRE (MAIN BODY ECU BRANCH WIRE)
- Measure the resistance according to the value (s) in the table below.
HINT:
The resistance must be measured after the CAN No. 1 junction connector is disconnected.
Standard Resistance
RESISTANCE SPECIFIED CONDITIONSTester Connection Condition Specified Condition E65-1 (CANH) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher E65-12 (CANL) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: Go to step 18
OK: Go to Next Step
- Measure the resistance according to the value (s) in the table below.
- CHECK FOR SHORT TO B+ IN CAN BUS WIRE (AIR CONDITIONING AMPLIFIER BRANCH WIRE)
- Measure the resistance according to the value (s) in the table below.
HINT:
The resistance must be measured after the CAN No. 1 junction connector is disconnected.
Standard Resistance
RESISTANCE SPECIFIED CONDITIONSTester Connection Condition Specified Condition E65-7 (CANH) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher E65-18 (CANL) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: Go to step 19
OK: Go to Next Step
- Measure the resistance according to the value (s) in the table below.
- CHECK FOR SHORT TO B+ IN CAN BUS WIRE (CENTER AIRBAG SENSOR ASSEMBLY BRANCH WIRE)
- Measure the resistance according to the value (s) in the table below.
HINT:
The resistance must be measured after the CAN No. 1 junction connector is disconnected.
Standard Resistance
RESISTANCE SPECIFIED CONDITIONSTester Connection Condition Specified Condition E65-5 (CANH) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher E65-16 (CANL) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: Go to step 20
OK: Go to Next Step
- Measure the resistance according to the value (s) in the table below.
- CHECK FOR SHORT TO B+ IN CAN BUS WIRE (COMBINATION METER MAIN WIRE)
- Measure the resistance according to the value (s) in the table below.
HINT:
The resistance must be measured after the CAN No. 1 junction connector is disconnected.
Standard Resistance
RESISTANCE SPECIFIED CONDITIONSTester Connection Condition Specified Condition E65-4 (CANH) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ. or higher E65-15 (CANL) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: Go to step 21
OK: Go to Next Step
- Measure the resistance according to the value (s) in the table below.
- CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NETWORK GATEWAY ECU BRANCH WIRE)
- Measure the resistance according to the value (s) in the table below.
HINT:
The resistance must be measured after the CAN No. 1 junction connector is disconnected.
Standard resistance
RESISTANCE SPECIFIED CONDITIONSTester Connection Condition Specified Condition E65-10 (CANH) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher E65-21 (CANL) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: Go to step 23
OK: Go to Next Step
- Measure the resistance according to the value (s) in the table below.
- CHECK FOR SHORT TO B+ IN CAN BUS WIRE (ACCESSORY GATEWAY BRANCH WIRE)
- Measure the resistance according to the value (s) in the table below.
HINT:
The resistance must be measured after the CAN No. 1 junction connector is disconnected.
Standard resistance
RESISTANCE SPECIFIED CONDITIONSTester Connection Condition Specified Condition E65-11 (CANH) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher E65-22 (CANL) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher Result
RESULT CHARTResult Proceed to OK A NG (w/o remote engine starter) B NG (w/ remote engine starter) C Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
B: REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (CAN NO. 1 JUNCTION CONNECTOR - ACCESSORY GATEWAY)
C: Go to step 22
A: Go to Next Step
- Measure the resistance according to the value (s) in the table below.
- CHECK FOR SHORT TO B+ IN CAN BUS WIRE (CAN NO. 1 JUNCTION CONNECTOR POWER STEERING ECU)
- Disconnect the power steering ECU connector.
- Measure the resistance according to the value (s) in the table below.
HINT:
The resistance must be measured after the CAN No. 1 junction connector is disconnected.
Standard Resistance
RESISTANCE SPECIFIED CONDITIONSTester Connection Condition Specified Condition E65-3 (CANH) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher E65-14 (CANL) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (CAN NO. 1 JUNCTION CONNECTOR - POWER STEERING ECU)
OK: REPLACE POWER STEERING ECU (See POWER STEERING ECU )
- CHECK FOR SHORT TO B+ IN CAN BUS WIRE (CAN NO. 1 JUNCTION CONNECTOR STEERING ANGLE SENSOR)
- Disconnect the steering angle sensor connector.
- Measure the resistance according to the value (s) in the table below.
HINT:
The resistance must be measured after the CAN No. 1 junction connector is disconnected.
Standard Resistance
RESISTANCE SPECIFIED CONDITIONSTester Connection Condition Specified Condition E65-8 (CANH) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher E65-19 (CANL) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (CAN NO. 1 JUNCTION CONNECTOR - STEERING ANGLE SENSOR)
OK: REPLACE STEERING ANGLE SENSOR (See REMOVAL )
- CHECK FOR SHORT TO B+ IN CAN BUS WIRE (CAN NO. 1 JUNCTION CONNECTOR YAW RATE SENSOR)
- Disconnect the yaw rate sensor connector.
- Measure the resistance according to the value (s) in the table below.
HINT:
The resistance must be measured after the CAN No. 1 junction connector is disconnected.
Standard Resistance
RESISTANCE SPECIFIED CONDITIONSTester Connection Condition Specified Condition E65-9 (CANH) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher E65-20 (CANL) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (CAN NO. 1 JUNCTION CONNECTOR - YAW RATE SENSOR)
OK: REPLACE YAW RATE SENSOR (See YAW RATE AND ACCELERATION SENSOR (W/ VSC) )
- CHECK FOR SHORT TO B+ IN CAN BUS WIRE (CAN NO. 1 JUNCTION CONNECTOR MAIN BODY ECU)
- Disconnect the main body ECU connector.
- Measure the resistance according to the value (s) in the table below.
HINT:
The resistance must be measured after the CAN No. 1 junction connector is disconnected.
Standard Resistance
RESISTANCE SPECIFIED CONDITIONSTester Connection Condition Specified Condition E65-1 (CANH) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher E65-12 (CANL) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (CAN NO. 1 JUNCTION CONNECTOR - MAIN BODY ECU)
OK: REPLACE MAIN BODY ECU
- CHECK FOR SHORT TO B+ IN CAN BUS WIRE (CAN NO. 1 JUNCTION CONNECTOR - AIR CONDITIONING AMPLIFIER)
- Disconnect the air conditioning amplifier connector.
- Measure the resistance according to the value (s) in the table below.
HINT:
The resistance must be measured after the CAN No. 1 junction connector is disconnected.
Standard Resistance
RESISTANCE SPECIFIED CONDITIONSTester Connection Condition Specified Condition E65-7 (CANH) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher E65-18 (CANL) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (CAN NO. 1 JUNCTION CONNECTOR - AIR CONDITIONING AMPLIFIER)
OK: REPLACE AIR CONDITIONING AMPLIFIER (See AIR CONDITIONING AMPLIFIER )
- CHECK FOR SHORT TO B+ IN CAN BUS WIRE (CAN NO. 1 JUNCTION CONNECTOR CENTER AIRBAG SENSOR ASSEMBLY)
- Disconnect the center airbag sensor assembly connector.
- Measure the resistance according to the value (s) in the table below.
HINT:
The resistance must be measured after the CAN No. 1 junction connector is disconnected.
Standard Resistance
RESISTANCE SPECIFIED CONDITIONSTester Connection Condition Specified Condition E65-5 (CANH) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher E65-16 (CANL) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (CAN NO. 1 JUNCTION CONNECTOR - CENTER AIRBAG SENSOR ASSEMBLY)
OK: REPLACE CENTER AIRBAG SENSOR ASSEMBLY (See REMOVAL )
- CHECK FOR SHORT TO B+ IN CAN BUS WIRE (CAN NO. 1 JUNCTION CONNECTOR COMBINATION METER)
- Disconnect the combination meter connector.
- Measure the resistance according to the value (s) in the table below.
HINT:
The resistance must be measured after the CAN No. 1 junction connector is disconnected.
Standard Resistance
RESISTANCE SPECIFIED CONDITIONSTester Connection Condition Specified Condition E65-4 (CANH) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher E65-15 (CANL) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (CAN NO. 1 JUNCTION CONNECTOR - COMBINATION METER)
OK: Go to Next Step
- CHECK FOR SHORT TO B+ IN CAN BUS WIRE (CAN NO. 1 JUNCTION CONNECTOR ACCESSORY GATEWAY)
- Disconnect the accessory gateway connector from the accessory.
- Measure the resistance according to the value (s) in the table below.
HINT:
The resistance must be measured after the CAN No. 1 junction connector is disconnected.
Standard Resistance
RESISTANCE SPECIFIED CONDITIONSTester Connection Condition Specified Condition E65-11 (CANH) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher E65-22 (CANL) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (CAN NO. 1 JUNCTION CONNECTOR - ACCESSORY GATEWAY)
OK: REPLACE THE ACCESSORY
- CHECK FOR SHORT TO B+ IN CAN BUS WIRE (CAN NO. 1 JUNCTION CONNECTOR NETWORK GATEWAY ECU)
- Disconnect the network gateway ECU connector.
- Measure the resistance according to the value (s) in the table below.
HINT:
The resistance must be measured after the CAN No. 1 junction connector is disconnected.
Standard Resistance
RESISTANCE SPECIFIED CONDITIONSTester Connection Condition Specified Condition E65-10 (CANH) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher E65-21 (CANL) - E15-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (CAN NO. 1 JUNCTION CONNECTOR - NETWORK GATEWAY ECU)
OK: REPLACE NETWORK GATEWAY ECU (See REMOVAL )