Inspection Procedure

WARNING: This page is about a different car, the 2002 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.

Check that the ECU connectors are securely connected to the ECU.
NO: Connect the connector to the ECU.

If YES , go to step 2.
Check the DTC for the ABS and VSC . See STEP B - IN CASE OF NOT USING HAND-HELD TESTER, CHECK THE DTC OF ABS & BA & TRAC & VSC ECU or STEP D - IN CASE OF USING HAND-HELD TESTER, CHECK THE DTC .
YES: Repair circuit indicated by the output code.

If NO , go to step 3.
Does VSC warning light go off?
YES: Check for open or short circuit in harness and connector between ECU-IG fuse and ECU. See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE .

If NO , go to step 4.
Check battery positive voltage.
Preparation: Start the engine.

Check: the battery positive voltage.

OK: Voltage: 10-16 V.

NG: Check and repair the charging system. See CHARGING SYSTEM .

If OK , go to step 5.
Check operation of the VSC warning light.
REPARATION, In case of using the hand-held tester
1. Connect the hand-held tester to the DLC3.
2. Turn the ignition switch ON and push the hand-held tester main switch ON.
3. Select the ACTIVE TEST mode on the hand-held tester.
Check: that "ON" and "OFF" of the VSC warning light can be shown on the combination meter by the hand-held tester.

Preparation:
1. Turn the ignition switch OFF.
2. Disconnect the connector from the ABS & BA & TRAC & VSC ECU.
3. Turn the ignition switch ON.
Check: the VSC warning light goes off.

NG: Check and replace combination meter. For checking, see SYSTEM TESTS . For removal, MULTI-DISPLAY INFORMATION CENTER .

If OK , go to step 6.
Check for short circuit in harness and connector between combination meter and ABS & BA & TRAC & VSC ECU, combination meter and DLC1 . See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE .

NG: Repair or replace harness or connector.

OK: Check and replace ABS & BA & TRAC & VSC ECU.