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Inspection Procedure

WARNING: This page is about a different car, the 2005 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: When replacing the master cylinder solenoid, perform zero point CALIBRATION  .
  1. INSPECT IF SKID CONTROL ECU CONNECTOR IS SECURELY CONNECTED 
    1. Check the skid control ECU connector's connecting condition.

    OK: 

    The connector should be securely connected. 

    1. NG: CONNECT CONNECTOR TO ECU 
    2. OK: GO TO NEXT STEP 
  2. INSPECT BATTERY 
    1. Check the battery voltage.

    Standard: 

    Voltage: 11 to 14 V 

    1. NG: INSPECT CHARGING SYSTEM ( ON-VEHICLE INSPECTION  ,  ON-VEHICLE INSPECTION  ) 
    2. OK: GO TO NEXT STEP 
  3. CHECK HARNESS AND CONNECTOR (BETWEEN SKID CONTROL ECU AND COMBINATION METER) ( HOW TO PROCEED WITH TROUBLESHOOTING  ) 
    1. Disconnect the skid control ECU connector and combination meter connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard: 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester Connection Specified Condition
      S28-15 (INFR) - C10-17 Below 1Ω
      S28-15 (INFR) - Body ground 10 kΩ or higher
      Fig 1: Identifying Connectors (Skid Control ECU And Combination Meter)
      G02584627Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: GO TO NEXT STEP 
  4. INSPECT COMBINATION METER ASSY 
    1. Check the combination meter system (see HOW TO PROCEED WITH TROUBLESHOOTING ).
    1. NG: REPLACE  COMBINATION METER ASSY 
    2. OK: GO TO NEXT STEP 
  5. INSPECT SKID CONTROL ECU (CSW TERMINAL) 
    1. Disconnect the skid control ECU connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard: 

      TESTER CONNECTION, CONDITION AND SPECIFIED CONDITION (1 OF 2)

      Tester Connection Condition Specified Condition
      S28-43 (CSW) - Body ground AUTO LSD switch is not pushed in 10 kΩ or higher
      Fig 2: Inspecting Skid Control ECU Connector (CSW Terminal)
      G02584628Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: go to step 6 
    2. OK: GO TO NEXT STEP 

      REPLACE MASTER CYLINDER SOLENOID (SEE  OVERHAUL  ) 

  6. INSPECT AUTO LSD SWITCH 
    1. Disconnect the AUTO LSD switch connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard: 

      TESTER CONNECTION, CONDITION AND SPECIFIED CONDITION (2 OF 2)

      Tester Connection Condition Specified Condition
      A42-3 - A42-4 Switch is pushed in Below 1Ω
      A42-3 - A42-4 Switch is not pushed in 10 kΩ or higher
      Fig 3: Inspecting Auto LSD Switch Connector
      G02584629Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE AUTO LSD SWITCH 
    2. OK: GO TO NEXT STEP 
  7. CHECK HARNESS AND CONNECTOR (BETWEEN SKID CONTROL ECU, BODY GROUND AND AUTO LSD SWITCH) ( HOW TO PROCEED WITH TROUBLESHOOTING  ) 
  1. Measure the resistance according to the value(s) in the table below.

    Standard: 

    TESTER CONNECTION AND SPECIFIED CONDITION

    Tester Connection Specified Condition
    S28-43 (CSW) - A42-3 Below 1Ω
    S28-43 (CSW) - Body ground 10 kΩ or higher
    A42-4 - Body ground Below 1Ω
    Fig 4: Identifying Connectors (Skid Control ECU And Auto LSD Switch)
    G02584630Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
  2. OK: GO TO NEXT STEP 

    END 

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