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Inspection Procedure

NOTE: When replacing the master cylinder solenoid, perform zero point calibration (See CALIBRATION  ).
  1. INSPECT VSC OFF INDICATOR LIGHT 
    1. Disconnect the skid control ECU connector.
    2. Ground terminal WT of the skid control ECU.
    3. Turn the ignition switch to the ON position.
    4. Check that the VSC OFF indicator light comes on.

      OK: VSC OFF indicator light comes on. 

    OK: REPLACE MASTER CYLINDER SOLENOID  (See DISASSEMBLY )

    NG: Go To Next Step 

  2. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - 4WD CONTROL ECU TRANSFER SHIFT ACTUATOR) (See  DTC C1380/64: STOP LIGHT CONTROL RELAY MALFUNCTION   ) 

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go To Next Step 

  3. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - VSC OFF SWITCH) (See  VSC OFF INDICATOR LIGHT DOES NOT COME ON   ) 

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go To Next Step 

  4. INSPECT VSC OFF SWITCH (See  VSC OFF INDICATOR LIGHT DOES NOT COME ON   ) 

    NG: REPLACE VSC OFF SWITCH (See  REMOVAL   ) 

    OK: Go To Next Step 

  5. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - COMBINATION METER) 
    1. Disconnect the combination meter connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION TABLE

      Tester Connection Condition Specified Condition
      S28-36(VSCW) - C10-17 Always Below 1 Ω
      S28-36 (VSCW) - Body ground Always 10 kΩ or higher
      Fig 1: Identifying Harness Connector (Skid Control ECU - Combination Meter)
      G05556589Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go To Next Step 

  6. INSPECT COMBINATION METER ASSEMBLY 
    1. Check the combination meter system (See HOW TO PROCEED WITH TROUBLESHOOTING ).

    NG: REPLACE COMBINATION METER ASSEMBLY 

    OK: CHECK FOR INTERMITTENT PROBLEMS (See  CHECK FOR INTERMITTENT PROBLEMS   )