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Inspection Procedure

  1. CHECK MULTI-DISPLAY (MACC VOLTAGE) 
    1. Measure the voltage of the display.

      Standard voltage 

      VOLTAGE CHART

      Tester Connection Condition Specified Condition
      M14-4 (MACC) - Body ground Power switch ON (ACC) 4 to 6 V

    NG: REPLACE MULTI-DISPLAY 

    Fig 1: Checking Multi-Display (MACC Voltage)
    G05190155Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to Next Step 

  2. CHECK WIRE HARNESS (MULTI-DISPLAY - OVERHEAD JUNCTION BLOCK) 
    1. Disconnect the M14 display connector.
    2. Disconnect the 03 junction block connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      STANDARD RESISTANCE REFERENCE CHART

      Tester Connection Specified Condition
      M14-4 (MACC) - 03-7 (ACC) Below 1 Ω
      M14-2 (MIN+) - 03-8 (MI1+) Below 1 Ω
      M14-3 (MIN-) - 03-9 (MIC-) Below 1 Ω
      M14-4 (MACC) - Body ground 10 kΩ or higher
      M14-2 (MIN+) - Body ground 10 kΩ or higher
      M14-3 (MIN-) - Body ground 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    Fig 2: Checking Wire Harness (Multi-Display - Overhead Junction Block)
    G05189895Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN  PROBLEM SYMPTOMS TABLE