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Inspection Procedure

  1. INSPECT FUSES (ECU-B, ECU-IG) 
    1. Remove the ECU-B fuse from the engine room relay block.
    2. Remove the ECU-IG fuse from the main body ECU.
    3. Measure the resistance.

      Standard resistance: 

      Below 1Ω 

    4. Reinstall the fuses.
    Fig 1: Identifying ECU-B And ECU-IG Fuse
    G04833788Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE FUSE 

    OK: GO TO NEXT STEP 

  2. INSPECT MAIN BODY ECU (PWR RELAY) 
    1. Remove the POWER fuse from the main body ECU.
    2. Turn the ignition switch to ON.
    3. Measure the voltage between the POWER fuse terminal of the main body ECU and body ground.

      Standard voltage 

      MAIN BODY ECU (PWR RELAY) SPECIFICATION

      Tester Connections Ignition Switch Conditions Specified Conditions
      POWER fuse terminal (1) - Body ground ON 11 to 14 Ω
    4. Reinstall the POWER fuse.
    Fig 2: Identifying Power Fuse
    G04833789Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE MAIN BODY ECU (PWR RELAY) 

    OK: GO TO NEXT STEP 

  3. CHECK HARNESS AND CONNECTOR (POWER WINDOW MASTER SWITCH - BATTERY AND BODY GROUND) 
    1. Disconnect the G1 power window regulator master switch assembly connector.
    2. Measure the voltage of the wire harness side connector.

      Standard voltage: 

      3 Door 

      POWER WINDOW MASTER SWITCH - BATTERY AND BODY GROUND VOLTAGE SPECIFICATION (3 DOOR)

      Tester Connection Condition Specified Condition
      G1-15 (B)- Body ground Ignition Switch ON 11 to 14 V

      Standard voltage: 

      Except 3 door 

      POWER WINDOW MASTER SWITCH - BATTERY AND BODY GROUND VOLTAGE SPECIFICATION (EXCEPT 3 DOOR) VOLTAGE SPECIFICATION

      Tester Connection Condition Specified Condition
      G1-6 (B)- Body ground Ignition switch ON 11 to 14 V
      Fig 3: Identifying Power Window Regulator Master Switch Connectors (Wire Harness Side)
      G04833790Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance of the wire harness side connector.

      Standard resistance: 

      3 Door 

      POWER WINDOW MASTER SWITCH - BATTERY AND BODY GROUND RESISTANCE SPECIFICATION (3 DOOR)

      Tester Connection Specified Condition
      G1-7 (E)- Body ground Below 1 Ω

      Standard resistance: 

      Except 3 door 

      POWER WINDOW MASTER SWITCH - BATTERY AND BODY GROUND RESISTANCE SPECIFICATION (EXCEPT 3 DOOR)

      Tester Connection Specified Condition
      G1-1 (E)- Body ground Below 1 Ω
    4. Reconnect the G1 power window regulator master switch assembly connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY 

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