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Slip Indicator Light does not Come ON: Wiring Diagram

WARNING: This page is about a different car, the 2006 Lexus IS 350. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Wiring Diagram
G04052166Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NOTE: When replacing the skid control ECU, perform zero point calibration (See CALIBRATION  ).
  1. CHECK CAN COMMUNICATION SYSTEM 
    1. Check if the CAN communication system DTC is output (See DIAGNOSIS SYSTEM ).

      Result 

      CONDITION CHART

      Condition Proceed to
      DTC is not output A
      DTC is output B

    B : INSPECT CAN COMMUNICATION SYSTEM 

    A : GO TO NEXT STEP 

  2. CHECK MULTIPLEX COMMUNICATION SYSTEM 
    1. Check if the multiplex communication system DTC is output (See DTC CHECK/CLEAR ).

      Result 

      CONDITION CHART

      Condition Proceed to
      DTC is not output A
      DTC is output B

    B : INSPECT MULTIPLEX COMMUNICATION SYSTEM 

    A : GO TO NEXT STEP 

  3. CHECK SLIP INDICATOR LIGHT 
    1. Connect the intelligent tester to the DLC3.
    2. Start the engine.
    3. Select the "SLIP INDI LAMP" in the Active Test and operate the SLIP indicator light by the intelligent tester.

      ABS / VSC: 

      VEHICLE CONDITION

      Item (Display) Vehicle Condition / Test Details Diagnostic Note
      SLIP INDI LAMP Turn SLIP indicator light ON / OFF Observe combination meter
    4. Check that "ON" and "OFF" of the SLIP indicator light are indicated on the combination meter when using the intelligent tester.

      OK: The SLIP indicator light turns on or off in accordance with the intelligent tester. 

      HINT:

      If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part (See PROBLEM SYMPTOMS TABLE  ).

    OK : REPLACE SKID CONTROL ECU 

    NG : GO TO NEXT STEP 

  4. INSPECT COMBINATION METER ASSEMBLY 
    1. Turn the engine switch off.
    2. Perform Active Test of the combination meter (meter CPU) using the intelligent tester (See DATA LIST / ACTIVE TEST ).

      OK: The SLIP indicator light turns on or off in accordance with the intelligent tester. 

      HINT:

      If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step (See PROBLEM SYMPTOMS TABLE  ).

    NG : REPLACE COMBINATION METER ASSEMBLY 

    OK : REPLACE SKID CONTROL ECU