Inspection Procedure

NOTE:

Turn the ignition switch off before measuring the resistance of CAN bus main wires and the CAN bus branch wires.
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 any 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 IN CAN BUS WIRES (DLC3 BRANCH WIRE)

Turn the ignition switch off.
Disconnect the CAN No. 1 junction connector.

Fig 1: Identifying E65 CAN No. 1 Junction Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance according to the value (s) in the table below.

Standard Resistance

RESISTANCE SPECIFIED CONDITIONS

Tester Connection	Switch Condition	Specified Condition
E15-6 (CANH) - E15-14 (CANL)	Ignition switch off	1 MΩ or higher

Fig 2: Identifying Terminal CANH And CANL Of DLC3 Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO DLC3

OK: Go to Next Step

CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 2 JUNCTION CONNECTOR)

Reconnect the CAN No. 1 junction connector.
Disconnect the CAN No. 2 junction connector.

Fig 3: Identifying CAN No. 2 Junction Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance according to the value (s) in the table below.

Standard Resistance

RESISTANCE SPECIFIED CONDITIONS

Tester Connection	Switch Condition	Specified Condition
E15-6 (CANH) - E15-14 (CANL)	Ignition switch off	108 to 132 Ω

Fig 4: Identifying Terminal CANH And CANL Of DLC3 Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to step 7

OK: Go to Next Step

CHECK FOR SHORT IN CAN BUS WIRES (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 CONDITIONS

Tester Connection	Switch Condition	Specified Condition
A34-10 (CANH) - A34-21 (CANL)	Ignition switch off	108 to 132 Ω

Fig 5: Identifying Terminal CANH And CANL Of CAN No.2 Junction Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to step 6

OK: Go to Next Step

CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 2 JUNCTION CONNECTOR - SKID CONTROL ECU)

Disconnect the skid control ECU connector.

Fig 6: Identifying Skid Control ECU Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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 CONDITIONS

Tester Connection	Switch Condition	Specified Condition
A34-8 (CANH) - A34-19 (CANL)	Ignition switch off	1 MΩ or higher

Fig 7: Identifying CAN No. 2 Junction Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (CAN NO. 2 JUNCTION CONNECTOR - SKID CONTROL ECU)

OK: Go to Next Step

CHECK FOR SHORT IN CAN BUS WIRES (SKID CONTROL ECU)

Reconnect the CAN No. 2 junction connector.

Measure the resistance according to the value (s) in the table below.

HINT:

The resistance must be measured after the CAN No. 1 and CAN No. 2 junction connector are reconnected.

The resistance must be measured after the skid control ECU connector is disconnected.

Standard Resistance

RESISTANCE SPECIFIED CONDITIONS

Tester Connection	Switch Condition	Specified Condition
E15-6 (CANH) - E15-14 (CANL)	Ignition switch off	54 Ω or higher

Result

RESULT CHART

Result	Proceed to
OK (w/o VSC)	A
OK (w/ VSC)	B
NG	C

Fig 8: Identifying Terminal CANH And CANL Of DLC3 Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

B: REPLACE BRAKE ACTUATOR ASSEMBLY (See REMOVAL )

C: REPLACE JUNCTION CONNECTOR (CAN No. 2)

A: REPLACE BRAKE ACTUATOR ASSEMBLY (See REMOVAL )

CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 2 JUNCTION CONNECTOR - ECM)

Disconnect the ECM connector.

Fig 9: Identifying Terminal CANH And CANL Of ECM Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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 CONDITIONS

Tester Connection	Switch Condition	Specified Condition
A34-10 (CANH) - A34-21 (CANL)	Ignition switch off	1 MΩ or higher

Result

RESULT CHART

Result	Proceed to
OK (for 2ZR-FE)	A
OK (for 2AZ-FE)	B
NG	C

Fig 10: Identifying Terminal CANH And CANL Of CAN No.2 Junction Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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 IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR - CAN NO. 2 JUNCTION CONNECTOR)

Turn the ignition switch off.
Disconnect the CAN No. 1 junction 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 CONDITIONS

Tester Connection	Switch Condition	Specified Condition
E65-6 (CANH) - E65-17 (CANL)	Ignition switch off	1 MΩ or higher

Fig 11: Identifying Terminal NANH And CANL Of CAN No.1 Junction Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (CAN NO. 1 JUNCTION CONNECTOR - CAN NO. 2 JUNCTION CONNECTOR)

OK: Go to Next Step

CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR COMBINATION METER)

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 CONDITIONS

Tester Connection	Switch Condition	Specified Condition
E65-4 (CANH) - E65-15 (CANL)	Ignition switch off	108 to 132 Ω

Fig 12: Identifying Terminal NANH And CANL Of CAN No.1 Junction Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to step 25

OK: Go to Next Step

CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR NETWORK GATEWAY ECU)

Disconnect the network gateway ECU connector.

Fig 13: Identifying Network Gateway ECU (E53) Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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 CONDITIONS

Tester Connection	Switch Condition	Specified Condition
E65-10 (CANH) - E65-21 (CANL)	Ignition switch off	1 MΩ or higher

Fig 14: Identifying Terminal NANH And CANL Of CAN No.1 Junction Connector

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: Go to Next Step

CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR STEERING ANGLE SENSOR)

Disconnect the steering angle sensor connector.

Fig 15: Identifying Steering Angle Sensor Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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 CONDITIONS

Tester Connection	Switch Condition	Specified Condition
E65-8 (CANH) - E65-19 (CANL)	Ignition switch off	1 MΩ or higher

Fig 16: Identifying Terminal CANH And CANL Of CAN No.1 Junction Connector

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: Go to Next Step

CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR - POWER STEERING ECU)

Disconnect the power steering ECU connector.

Fig 17: Identifying Power Steering ECU (E51) Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Reconnect the CAN No. 2 junction 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 CONDITIONS

Tester Connection	Switch Condition	Specified Condition
E65-3 (CANH) - E65-14 (CANL)	Ignition switch off	1 MΩ or higher

Fig 18: Identifying CAN No.1 Junction Connector Terminals

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: Go to Next Step

CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR - CENTER AIRBAG SENSOR ASSEMBLY)

Disconnect the center airbag sensor assembly connector.

Fig 19: Identifying Center Airbag Sensor Assembly Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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 CONDITIONS

Tester Connection	Switch Condition	Specified Condition
E65-5 (CANH) - E65-16 (CANL)	Ignition switch off	1 MΩ or higher

Fig 20: Identifying CAN No.1 Junction Connector Terminals

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: Go to Next Step

CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR - AIR CONDITIONING AMPLIFIER)

Disconnect the air conditioning amplifier connector.

Fig 21: Identifying Terminal CANH And CANL Of Air Conditioning Amplifier (E8) Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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 CONDITIONS

Tester Connection	Switch Condition	Specified Condition
E65-7 (CANH) - E65-18 (CANL)	Ignition switch off	1 MΩ or higher

Fig 22: Identifying CAN No.1 Junction Connector Terminals

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: Go to Next Step

CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR - MAIN BODY ECU)

Disconnect the main body ECU connector.

Fig 23: Identifying Terminal CANL And CANH Of Main Body ECU Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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 CONDITIONS

Tester Connection	Switch Condition	Specified Condition
E65-1 (CANH) - E65-12 (CANL)	Ignition switch off	1 MΩ or higher

Fig 24: Identifying Terminal CANL And CANH Of E65 Connector

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: Go to Next Step

CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR - YAW RATE SENSOR)

Disconnect the yaw rate sensor connector.

Fig 25: Identifying Terminal CANL And CANH Of Yaw Rate Sensor Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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 CONDITIONS

Tester Connection	Switch Condition	Specified Condition
E65-9 (CANH) - E65-20 (CANL)	Ignition switch off	1 MΩ or higher

Fig 26: Identifying Terminal CANL And CANH Of E65 Connector

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: Go to Next Step

CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR ACCESSORY GATEWAY)

w/ remote engine starter:
1. Disconnect the accessory gateway connector from the accessory.
  
  Fig 27: Identifying E43 Accessory Gateway Connector Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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 CONDITIONS

Tester Connection	Switch Condition	Specified Condition
E65-11 (CANH) - E65-22 (CANL)	Ignition switch off	1 MΩ or higher

Result

RESULT CHART

Result	Proceed to
OK	A
NG (w/o remote engine starter)	B
NG (w/ remote engine starter)	C

Fig 28: Identifying CAN No. 1 Junction Connector Terminals

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 24

A: Go to Next Step

CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR)

Reconnect the CAN No. 1 junction connector and CAN No. 2 junction connector.

Measure the resistance according to the value (s) in the table below.

HINT:

The resistance must be measured after the main wire connect ECU (ECM and combination meter), CAN No. 1 and No. 2 junction connectors are reconnected.

The resistance must be measured after the all branch wire connect ECU and sensor connectors are disconnected.

Standard Resistance

RESISTANCE SPECIFIED CONDITIONS

Tester Connection	Switch Condition	Specified Condition
E15-6 (CANH) - E15-14 (CANL)	Ignition switch off	54 Ω or higher

Fig 29: Identifying Terminal CANH And CANL Of DLC3 Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE JUNCTION CONNECTOR (CAN No.1)

OK: Go to Next Step

CHECK FOR SHORT IN CAN BUS WIRES (NETWORK GATEWAY ECU)

Re connect 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 network gateway ECU, main wire connect ECU (ECM and combination meter), CAN No. 1 and No. 2 junction connectors are reconnected.

Standard Resistance

RESISTANCE SPECIFIED CONDITIONS

Tester Connection	Switch Condition	Specified Condition
E15-6 (CANH) - E15-14 (CANL)	Ignition switch off	54 Ω or higher

Fig 30: Identifying Terminal CANH And CANL Of DLC3 Connector

NG: REPLACE NETWORK GATEWAY ECU (See REMOVAL )

OK: Go to Next Step

CHECK FOR SHORT IN CAN BUS WIRES (STEERING ANGLE SENSOR)

Re connect 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 steering angle sensor, main wire connect ECU (ECM and combination meter), CAN No. 1 and No. 2 junction connectors are reconnected.

Fig 31: Identifying Terminal CANH And CANL Of DLC3 Connector

Standard Resistance

RESISTANCE SPECIFIED CONDITIONS

Tester Connection	Switch Condition	Specified Condition
E15-6 (CANH) - E15-14 (CANL)	Ignition switch off	54 Ω or higher

NG: REPLACE STEERING ANGLE SENSOR (See REMOVAL )

OK: Go to Next Step

CHECK FOR SHORT IN CAN BUS WIRES (POWER STEERING ECU)

Re connect 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 power steering ECU, main wire connect ECU (ECM and combination meter), CAN No. 1 and No. 2 junction connectors are reconnected.

Standard Resistance

RESISTANCE SPECIFIED CONDITIONS

Tester Connection	Switch Condition	Specified Condition
E15-6 (CANH) - E15-14 (CANL)	Ignition switch off	54 Ω or higher

Fig 32: Identifying Terminal CANH And CANL Of DLC3 Connector

NG: REPLACE POWER STEERING ECU (See POWER STEERING ECU )

OK: Go to Next Step

CHECK FOR SHORT IN CAN BUS WIRES (CENTER AIRBAG SENSOR ASSEMBLY)

Re connect 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 center airbag sensor assembly, main wire connect ECU (ECM and combination meter), CAN No. 1 and No. 2 junction connectors are reconnected.

Standard Resistance

RESISTANCE SPECIFIED CONDITIONS

Tester Connection	Switch Condition	Specified Condition
E15-6 (CANH) - E15-14 (CANL)	Ignition switch off	54 Ω or higher

Fig 33: Identifying Terminal CANH And CANL Of DLC3 Connector

NG: REPLACE CENTER AIRBAG SENSOR ASSEMBLY (See REMOVAL )

OK: Go to Next Step

CHECK FOR SHORT IN CAN BUS WIRES (AIR CONDITIONING AMPLIFIER)

Re connect 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 air conditioning amplifier, main wire connect ECU (ECM and combination meter), CAN No. 1 and No. 2 junction connectors are reconnected.

Standard Resistance

RESISTANCE SPECIFIED CONDITIONS

Tester Connection	Switch Condition	Specified Condition
E15-6 (CANH) - E15-14 (CANL)	Ignition switch off	54 Ω or higher

Fig 34: Identifying Terminal CANH And CANL Of DLC3 Connector

NG: REPLACE AIR CONDITIONING AMPLIFIER (See AIR CONDITIONING AMPLIFIER )

OK: Go to Next Step

CHECK FOR SHORT IN CAN BUS WIRES (MAIN BODY ECU)

Re connect 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 main body ECU, main wire connect ECU (ECM and combination meter), CAN No. 1 and No. 2 junction connectors are reconnected.

Standard Resistance

RESISTANCE SPECIFIED CONDITIONS

Tester Connection	Switch Condition	Specified Condition
E15-6 (CANH) - E15-14 (CANL)	Ignition switch off	54 Ω or higher

Fig 35: Identifying Terminal CANH And CANL Of DLC3 Connector

NG: REPLACE MAIN BODY ECU

OK: Go to Next Step

CHECK FOR SHORT IN CAN BUS WIRES (ACCESSORY GATEWAY)

Reconnect the accessory gateway connector.

Measure the resistance according to the value (s) in the table below.

HINT:

The resistance must be measured after the accessory, main wire connect ECU (ECM and combination meter), CAN No. 1 and No. 2 junction connectors are reconnected.

Standard Resistance

RESISTANCE SPECIFIED CONDITIONS

Tester Connection	Switch Condition	Specified Condition
E15-6 (CANH) - E15-14 (CANL)	Ignition switch off	54 Ω or higher

Fig 36: Identifying Terminal CANH And CANL Of DLC3 Connector

NG: REPLACE THE ACCESSORY

OK: REPLACE YAW RATE SENSOR (See YAW RATE AND ACCELERATION SENSOR (W/ VSC) )

CHECK FOR SHORT IN CAN BUS WIRES (COMBINATION METER MAIN WIRE)

Disconnect the combination meter ECU connector.

Fig 37: Identifying Combination Meter ECU Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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 CONDITIONS

Tester Connection	Switch Condition	Specified Condition
E65-4 (CANH) - E65-15 (CANL)	Ignition switch off	1 MΩ or higher

Fig 38: Identifying Terminal CANH And CANL Of E65 Connector

NG: REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (CAN NO. 1 JUNCTION CONNECTOR - COMBINATION METER)

OK: REPLACE COMBINATION METER (See COMBINATION METER )