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Home >> Lexus >> 2007 >> RX 400h FWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Brake Control >> Electronically Controlled Brake System >> Slip Indicator Light does not Come ON >> Inspection Procedure

Inspection Procedure

NOTE: When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration (See INITIALIZATION ).

HINT:

The SLIP indicator light comes on when the traction control switch is ON.

  1. INSPECT CAN COMMUNICATION SYSTEM 
    1. Check if the CAN communication system DTC is output (See DIAGNOSIS SYSTEM ).

    Result 

    RESULT CHART

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

    B: REPAIR CAN COMMUNICATION SYSTEM 

    A: Go to next step 

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

    Result 

    RESULT CHART

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

    B: REPAIR MULTIPLEX COMMUNICATION SYSTEM 

    A: Go to next step 

  3. INSPECT SLIP INDICATOR LIGHT 
    1. Connect the intelligent tester to the DLC3.
    2. Turn the ignition switch on.
    3. Select the "SLIP INDI LAMP" in the ACTIVE TEST and operate the SLIP indicator light using the intelligent tester.

      ABS/VSC/TRAC: 

      VEHICLE CONDITION DIAGNOSTIC CHART

      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 operating using 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. Check the combination meter assembly (See HOW TO PROCEED WITH TROUBLESHOOTING ).

      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: END