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 FOR DTC

Check the output DTC (see DTC CHECK / CLEAR ).

Result

RESULT

Result	Proceed to
Neither CAN communication system DTC nor 4WD control system DTC is output	A
CAN communication DTC is output	B
4WD control system DTC is output	C

HINT:

When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding sensor.

B: REPAIR CIRCUIT INDICATOR BY OUTPUT CODE (CAN COMMUNICATION SYSTEM)

C: REPAIR CIRCUIT INDICATOR BY OUTPUT CODE (4WD CONTROL SYSTEM)

A: GO TO NEXT STEP.

PERFORM ACTIVE TEST BY INTELLIGENT TESTER (4WD INDICATOR LIGHT)

Using the intelligent tester's (with CAN VIM) ACTIVE TEST, generate a control command, and then check that the 4WD indicator light operates.

Combination Meter

VEHICLE CONDITION / TEST DETAILS

Item	Vehicle Condition / Test Details	Diagnostic Note
4WD Indicator Light	WD indicator light OFF	Observer combination meter

OK: The 4WD indicator light turns OFF

OK: REPLACE 4WD CONTROL ECU

NG: GO TO NEXT STEP.

CHECK WIRE HARNESS (4WD CONTROL ECU - BATTERY)

Disconnect the E57 ECU connector.

Measure the voltage of the wire harness side connector.

Voltage

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
E57-11 (IG1) - Body Ground	Ignition switch ON	10 to 14 V

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

Fig 1: Identifying E57 ECU Connector

OK: GO TO NEXT STEP.

CHECK COMBINATION METER
1. Check the combination meter system.
  Result: The combination meter system is normal.
NG: REPLACE COMBINATION METER

OK: REPLACE 4WD CONTROL ECU