Inspection Procedure

WARNING: This page is about a different car, the 2007 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

Check the condition of each related circuit connector before troubleshooting (see ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).

CHECK DLC3 (TC VOLTAGE)

Turn the ignition switch ON.

Measure the voltage of the DLC3.

Standard voltage

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Specified Condition
E13-13 (TC) - E13- 4 (CG)	10 to 14 V

Fig 1: Identifying DLC3 Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to step 3

OK: GO TO NEXT STEP.

CHECK CAN COMMUNICATION SYSTEM

Check if the CAN communication DTC is output (see HOW TO PROCEED WITH TROUBLESHOOTING ).

Result

RESULT

Result	Proceed to
DTC is not output	A
DTC is output	B

B: REPAIR CIRCUIT INDICATED BY OUTPUT DTC

A: REPLACE 4WD CONTROL ECU

CHECK WIRE HARNESS (DLC3 - ECM AND BODY GROUND)

Turn the ignition switch OFF.
Disconnect the A12 ECM connector.

Measure the resistance of the wire harness side connectors.

Standard resistance

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Specified Condition
E13-13 (TC) - A12-27 (TC)	Below 1Ω
E13-13 (TC) - Body Ground	10kΩ or higher

Fig 2: Identifying A12 ECM Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: GO TO NEXT STEP.

CHECK WIRE HARNESS (DLC3 - BODY GROUND)

Measure the resistance of the DLC3.

Standard resistance

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Specified Condition
E13-4 (CG) - Body ground	Below 1 Ω

Fig 3: Identifying DLC3 Connector

B: REPAIR OR REPLACE HARNESS AND CONNECTOR

A: GO TO NEXT STEP.

CHECK CAN COMMUNICATION SYSTEM

Check if the CAN communication DTC is output (see HOW TO PROCEED WITH TROUBLESHOOTING ).

Result

RESULT

Result	Proceed to
DTC is not output	A
DTC is output	B

B: REPAIR CIRCUIT INDICATED BY OUTPUT DTC

A: REPLACE 4WD CONTROL ECU