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.

NOTE: Start the inspection from step 1 in case of using the hand-held tester and start from step 2 in case of not using the hand-held tester.

Check operation of the VSC OFF indicator light.
Preparation:
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 OFF indicator light can be shown on the combination meter with the hand-held tester.

NG: Go to step 4.

If OK , go to step 2.
Check VSC OFF switch.
Preparation:
1. Remove the VSC OFF switch.
2. Disconnect the VSC OFF switch connector.
Check: Measure the resistance between terminals 1 and 4 of the VSC OFF switch when the VSC OFF switch is ON and OFF.

Fig 1: Testing VSC Off Switch
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: VSC Off Switch Specifications
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Replace VSC OFF switch.

If OK , go to step 3.
Check for open and short circuit in harness and connector between terminal CSW of ABS & BA & TRAC & VSC ECU and VSC OFF switch and body ground. See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE .
NG: Repair or replace harness or connector.

If OK , go to step 4.
Check VSC OFF indicator light. See SYSTEM TESTS and TEST NO. 32: VSC OFF INDICATOR LIGHT DOES NOT LIGHT UP .
NG: Repair or replace combination meter.

If OK , go to step 5.
Check for open and short circuit in harness and connector between terminal WT of ABS & BA & TRAC & VSC ECU and VSC OFF indicator light . 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.