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Home › Infiniti › 2009 › M45 Base › Repair and Diagnosis › External Pages › Different car › Section 43 (Door Lock) › Wireless Door Lock Control System › No Answer-Back › Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK WIRELESS DOOR LOCK CONTROL FUNCTION 
    1. Check the wireless door lock control functions by operating the transmitter switch.

      Result 

      WIRELESS DOOR LOCK CONTROL FUNCTION RESULT REFERENCE

      Result Proceed to
      Wireless door lock functions are normal but hazard warning light answer-back does not occur A
      Wireless door lock functions are normal but wireless door lock buzzer answer-back does not occur B
      Doors cannot be locked and unlocked with transmitter C

    B:  Go to step  3

    C:  Go to ONLY WIRELESS CONTROL FUNCTION IS INOPERATIVE 

    A: Go to next step 

  2. PERFORM ACTIVE TEST BY TECHSTREAM (TURN SIGNAL FLASHER RELAY) 
    1. Select the Active Test, use the Techstream to generate a control command, and then check that the hazard warning lights flash.
      1. Techstream

        Main body 

        TECHSTREAM DATA LIST - MAIN BODY

        Tester Display Test Part Control Range Diagnostic Note
        Hazard Flasher relay ON or OFF -

        OK: Hazard warning lights turn ON or OFF. 

    NG: Go to LIGHTING SYSTEM  (See HOW TO PROCEED WITH TROUBLESHOOTING )

    OK: REPLACE MAIN BODY ECU 

  3. PERFORM ACTIVE TEST BY TECHSTREAM (WIRELESS DOOR LOCK BUZZER) 
    1. Select the Active Test, use the Techstream to generate a control command, and then check that the wireless buzzer operates normally.
      1. Techstream

        Main body 

        TECHSTREAM ACTIVE TEST - MAIN BODY

        Tester Display Test Part Control Range Diagnostic Note
        Wireless Buzzer Sounds wireless buzzer ON or OFF -

        OK: Wireless buzzer turns ON or OFF. 

    NG: Go to step 4 

    OK: REPLACE MAIN BODY ECU 

  4. CHECK HARNESS AND CONNECTOR (WIRELESS DOOR LOCK BUZZER - MAIN BODY ECU AND BODY GROUND) 
    1. Disconnect the A34 buzzer connector.
    2. Disconnect the J1 ECU connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      HARNESS AND CONNECTOR (WIRELESS DOOR LOCK BUZZER - MAIN BODY ECU AND BODY GROUND) STANDARD RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      A34-1 - J1-7 (BZR) Always Below 1 Ω
      A34-2 - Body ground
      A34-1 or J1-7 (BZR) - Body ground Always 10 kΩ or higher
      Fig 1: Identifying A34 Buzzer And J1 ECU Connector
      G05161087Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  5. CHECK WIRELESS DOOR LOCK BUZZER (OPERATION) 
    1. Temporarily replace the wireless door lock buzzer with a new or normally functioning one (see WIRELESS DOOR LOCK BUZZER  ).
    2. Check that the buzzer sounds when using the transmitter LOCK and UNLOCK switches.

      OK: The buzzer sounds. 

      NOTE: When battery voltage is directly applied to the buzzer, the buzzer does not sound.

      HINT:

      The buzzer circuit is built into the main body ECU, not into the buzzer itself.

    NG: REPLACE MAIN BODY ECU 

    OK: END (WIRELESS DOOR LOCK BUZZER IS DEFECTIVE) 

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