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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 334 (Anti-Lock Brake System W/EBD & BA & TRAC & VSC System - Diagnostics) >> Circuit Inspection >> VSC Warning Light Circuit >> Inspection Procedure

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.
  1. Check operation of the VSC warning 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 warning light can be shown on the combination meter with the hand-held tester.

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

    If NG  , go to next 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  3.

  3. Check for open and short circuit in harness and connector between ABS & BA & TRAC & VSC ECU and VSC warning light  . See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE .

    NG:  Repair or replace harness or connector.

    If OK  , go to step  4.

  4. Check VSC warning light.  See SYSTEM TESTS and TEST NO. 32: VSC OFF INDICATOR LIGHT DOES NOT LIGHT UP .

NG:  Repair or replace combination meter. See SYSTEM TESTS . For removal, MULTI-DISPLAY INFORMATION CENTER .

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