FixVault
Home › Lexus › 2005 › LX 470 › Repair and Diagnosis › Brakes › Traction Control › Abs With BA & VSC - Diagnostics › Circuit Inspection › VSC OFF Indicator Light, Center Diff Lock Switch Circuit › Inspection Procedure

Inspection Procedure

HINT:

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 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: 

    Check that "ON" and "OFF" of the VSC OFF indicator light can be shown on the combination meter with the hand-held tester.

    1. NG : Go to step   3 
    2. OK : Go to Next Step. 
  2. Is DTC output for VSC? 
    1. YES : Repair circuit indicated by the output code. 
    2. OK : Go to Next Step. 
  3. Does the warning lights other than VSC OFF indicator lights up? 
    1. YES : Go to step   5 
    2. NO : Go to next step 
  4. Check IG1 No. 1 relay. 

    PREPARATION: 

    Remove the IG1 No. 1 relay from the engine room J/B.

    CHECK: 

    Check continuity between each pair of terminal of IG1 No. 1 relay.

    OK: 

    IG1 NO 1 RELAY TERMINALS AND CONTINUITY DETAIL

    Terminals 3 and 4 Continuity
    Terminals 1 and 2 Open

    CHECK: 

    1. Apply battery positive voltage between terminals 3 and 4.
    2. Check continuity between terminals.

    OK: 

    IG1 NO 1 RELAY TERMINALS AND CONTINUITY DETAIL

    Terminals 1 and 2 Continuity
    Fig 1: Testing IG1 No 1 Relay
    G02986770Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG : Replace IG1 No. 1 relay. 
    2. OK : Check for open circuit in harness and connector between IG1 No. 1 relay and combination meter (See  PROCEDURE  ). 
  5. Check VSC OFF indicator light. 

    Open circuit in the combination meter (See CIRCUIT ).

    1. NG : Repair VSC OFF indicator light bulb or combination meter assembly. 
    2. OK : Go to Next Step. 
  6. Check for short circuit in harness and connector between VSC OFF indicator light and skid control ECU (See  PROCEDURE  ). 
    1. NG : Repair or replace harness or connector. 
    2. OK : Go to Next Step. 
  7. Check if center diff. lock switch remains ON, or check wire harness between center diff. lock switch and body ground for short circuit. 
    1. NG : Repair center diff. lock switch or repair or replace wire harness. 
    2. OK : Check and repair skid control ECU. 
About FixVault