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Inspection Procedure

NOTE: When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration (see INITIALIZATION  ).
  1. INSPECT CAN COMMUNICATION SYSTEM 
    1. Check if the CAN communication system DTC is output (see DIAGNOSIS SYSTEM ).

      Result 

      RESULT

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

    B: REPAIR CAN COMMUNICATION SYSTEM  (See HOW TO PROCEED WITH TROUBLESHOOTING )

    A: GO TO Next Step 

  2. INSPECT MULTIPLEX COMMUNICATION SYSTEM 
    1. Check if the multiplex communication system DTC is output (see DIAGNOSIS SYSTEM ).

      Result 

      RESULT

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

    B: REPAIR MULTIPLEX COMMUNICATION SYSTEM  (See HOW TO PROCEED WITH TROUBLESHOOTING )

    A: GO TO Next Step 

  3. INSPECT IF SKID CONTROL ECU CONNECTOR IS SECURELY CONNECTED 
    1. Check the skid control ECU connector's connecting condition.

      OK: 

      The connector is securely connected. 

    NG: CONNECT CONNECTOR TO ECU CORRECTLY  (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE )

    OK: GO TO Next Step 

  4. INSPECT BATTERY 
    1. Check the battery voltage. Standard voltage: 10 to 14 V

    NG: INSPECT CHARGING SYSTEM  (See ON-VEHICLE INSPECTION )

    OK: GO TO Next Step 

  5. CHECK WIRE HARNESS (SKID CONTROL ECU - BATTERY AND BODY GROUND) 
    1. Disconnect the A13 and A15 ECU connectors.
    2. Turn the power switch ON (IG).
    3. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      A13-16 (IG1) - Body ground Power switch ON (IG) 10 to 14 V
    4. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      A13-1 (GND) - Body ground Below 1 Ω.
      A15-1 (GND4) - Body ground Below 1 Ω
      Fig 1: Identifying A13 And A15 Connectors Terminals
      G05306004Courtesy 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 (see INITIALIZATION ).

      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.

    NG: REPLACE COMBINATION METER ASSEMBLY  (See REMOVAL )

    OK: REPLACE SKID CONTROL ECU (See  REMOVAL   ) 

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