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Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT FUSE (STOP, IGN, IG2) 
    1. Remove the STOP and IGN fuses from the instrument panel junction block.
    2. Remove the IG2 fuse from the engine room No. 1 relay block.
    3. Measure the resistance of the fuses.

      4. Standard resistance: 

      Below 1 Ω 

    NG: REPLACE FUSE 

    OK: Go TO NEXT STEP. 

  2. INSPECT IG2 RELAY 
    1. Remove the IG2 relay from the instrument panel junction block.
    2. Measure the resistance of the relay.
      Fig 1: Identifying IG2 Relay Terminals
      G04490704Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard resistance 

      IG2 RELAY

      Tester Connection Specified Condition
      3 - 5 10 kΩ or higher
      Below 1 Ω
      (when battery voltage is applied to terminals 1 and 2)

    NG: REPLACE IG2 RELAY 

    OK: GO TO NEXT STEP. 

  3. INSPECT STOP LIGHT SWITCH 
    1. Remove the stop light switch.
    2. Measure the resistance of the switch.
      Fig 2: Inspecting Stop Light Switch
      G04490705Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard resistance 

      STOP LIGHT SWITCH

      Tester Connection Switch Condition Specified Condition
      1 - 2 Not pushed Below 1 Ω
      3 - 4 Pushed
      1 - 2 Pushed 10 kΩ or higher
      3 - 4 Not pushed

    NG: REPLACE STOP LIGHT SWITCH 

    OK: GO TO NEXT STEP. 

  4. CHECK WIRE HARNESS (SWITCH - BATTERY) 
    1. Disconnect the A3 switch connector.
    2. Measure the voltage of the wire harness side connector.
      Fig 3: Identifying A3 Switch Harness Connector Terminals
      G04490706Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard voltage 

      WIRE HARNESS (SWITCH - BATTERY)

      Tester Connection Switch Condition Specified Condition
      A3-3 - Body ground Always 10 to 14 V
      A3-2 - Body ground Ignition switch ON

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK: GO TO NEXT STEP. 

  5. CHECK WIRE HARNESS (ECM - BATTERY) 
    1. Disconnect the A9 ECM connector.
    2. Turn the ignition switch ON.
    3. Measure the voltage of the wire harness side connector.
      Fig 4: Identifying A9 ECM Harness Connector Terminals
      G04490707Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard voltage 

      WIRE HARNESS (ECM - BATTERY)

      Tester Connection Switch Condition Specified Condition
      A9-35 (STP) - Body ground Depressed 10 to 14 V
      A9-36 (ST1-) - Body ground Released
      A9-35 (STP) - Body ground Released Below 1 V
      A9-36 (ST1-) - Body ground Depressed

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK: REPLACE ECM 

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