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Inspection Procedure

  1. INSPECT FUSE (RR MPX-B 1, RR-ACC) 
    1. Disconnect the RR MPX-B 1 and RR-ACC fuses from the rear junction block.
    2. Measure the resistance of the fuses.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      RR MPX-B 1 fuse Always Below 1 Ω
      RR-ACC fuse Always Below 1 Ω

    NG: REPLACE FUSE 

    OK: GO TO NEXT STEP 

  2. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY CONTROLLER - BATTERY AND BODY GROUND) 
    1. Disconnect the R30 controller connector.
      Fig 1: Identifying Multi-Display Controller Connector Terminal
      G04953971Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      R30-12 (GND) - Body ground Always Below 1 Ω
    3. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Switch Condition Specified Condition
      R30-1 (+B) - Body ground Always 11 to 14 V
      R30-6 (ACC) - Body ground Engine switch on (ACC) 11 to 14 V

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See  PROBLEM SYMPTOMS TABLE   ) 

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