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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 

      STANDARD RESISTANCE SPECIFICATION

      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.
    2. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      STANDARD RESISTANCE SPECIFICATION

      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 

      STANDARD VOLTAGE SPECIFICATION

      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
      Fig 1: Identifying R30 Controller Connector
      G04953971Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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