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Inspection Procedure

  1. CHECK WIRE HARNESS (INSTRUMENT CLUSTER FINISH PANEL CENTER - BATTERY AND BODY GROUND) 
    1. Disconnect the M5 panel connector.
      Fig 1: Identifying M5 Panel Connector Terminals
      G05293355Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance and voltage of the wire harness side connector.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Specified Condition
      M5-11 (GND1) - Body ground Below 1 Ω

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      M5-10 (+B1)*Body ground Always 10 to 14 V
      M5-12 (ST1) - Body ground Ignition switch OFF OV
      M5-12 (ST1) - Body ground Ignition switch START 10 to 14 V
      M5-20 (ACC) - Body ground Ignition switch OFF OV
      M5-20 (ACC) - Body ground Ignition switch ACC 10 to 14 V

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK: Go to next step 

  2. CHECK WIRE HARNESS (NAVIGATION ECU - STEREO COMPONENT AMPLIFIER AND BODY GROUND) 
    1. Disconnect the M6 panel connector.
    2. Disconnect the A8 A/C connector.
      Fig 2: Identifying A8 A/C Connector Terminals
      G05293356Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance of the wire harness connectors.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Specified Condition
      M5-3 (OPEN) - A8-14 (EMOP) Below 1 Ω
      MS-13 (TILT) - A8-4 (EMTI) Below 1 Ω
      M5-4 (RE1) - A10-2 (SW1) Below 1 Ω
      M5-14 (RE2) - A10-7 (SW2) Below 1 Ω
      M5-3 (OPEN) - Body ground 10 kΩ or higher
      M5-13 (TILT) - Body ground 10 kΩ or higher
      M5-3 (RE1) - Body ground 10 kΩ or higher
      M5-13 (RE2) - Body ground 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK: Go to next step 

  3. INSPECT INSTRUMENT CLUSTER FINISH PANEL SUB-ASSEMBLY CENTER 
    1. Remove the instrument cluster finish panel center.
      Fig 3: Identifying Instrument Cluster Finish Panel Center Connector Terminals
      G05293357Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance of the panel.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Specified Condition
      M5-3 (OPEN) - C-8 (OPEN/CLOSE) Below 1 Ω
      M5-13 (TILT) - C-7 (TILT) Below 1 Ω
      M5-4 (RE1) - C-3 (OPEN) Below 1 Ω
      M5-14 (RE2) - C-2 (CLOSE) Below 1 Ω
      M5-12 (ST1) - C-5 (ST1) Below 1 Ω
      M5-20 (ACC) - C-6 (ACC) Below 1 Ω
      M5-11 (GND1) - C-9 (GND1) Below 1 Ω
      M5-10 (+B1) - C-10 (+B1) Below 1 Ω

    NG: REPAIR OR REPLACE INSTRUMENT CLUSTER FINISH PANEL SUB-ASSEMBLY CENTER 

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

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