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Home › Lexus › 2007 › GS 450h › Repair and Diagnosis › Body & Frame › Door Locks › Door Lock › Power Door Lock Control System › Only Driver Door LOCK / UNLOCK Functions do not Operate › Inspection Procedure

Inspection Procedure

  1. PERFORM ACTIVE TEST BY INTELLIGENT TESTER (FRONT DOOR LOCK MOTOR) 
    1. Select the ACTIVE TEST, use the intelligent tester (with CAN VIM) to generate a condition command, and then check that the door lock motor operates.

      Front multiplex network door ECU LH 

      FRONT MULTIPLEX NETWORK DOOR ECU LH CHART

      Item Tester Details
      DOOR LOCK Operate door lock motor LOCK/UNLOCK

      OK: Door locks/unlocks. 

    OK: REPLACE FRONT MULTIPLEX NETWORK DOOR ECU LH 

    NG: GO TO Next Step 

  2. INSPECT FRONT DOOR LOCK ASSEMBLY LH 
    1. Apply battery voltage to the door lock motor and check operation of the door lock motor.

      OK 

      MEASUREMENT CONDITION SPECIFIED CONDITION REFERENCE CHART

      Measurement Condition Specified Condition
      Battery positive (+) → Terminal 4 (L)
      Battery negative (-) → Terminal 1 (UL)      		 Lock
      Battery positive (+) → Terminal 1 (UL)
      Battery negative (-) → Terminal 4 (L)      		 Unlock
      2. Fig 1: Inspecting Front Door Lock Assembly LH
      G05310939Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE FRONT DOOR LOCK ASSEMBLY LH 

    OK: GO TO Next Step 

  3. READ VALUE OF INTELLIGENT TESTER (DOOR LOCK POSITION SWITCH) 
    1. Check the DATA LIST for proper functioning of the door lock position switch.

      Multiplex network master switch 

      NORMAL CONDITION CHART

      Item Measurement Item/Display (Range) Normal Condition
      LOCK POS SW Door lock position switch signal/ ON or OFF ON: Driver side door is unlocked
      OFF: Driver side door is locked

      OK: ON (driver side door is unlocked) appears on screen. 

    OK: REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY 

    NG: GO TO Next Step 

  4. INSPECT FRONT DOOR LOCK ASSEMBLY LH (DOOR LOCK POSITION SWITCH) 
    1. Measure the resistance of the switch.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART

      Tester Connection Switch Condition Specified Condition
      7 (E) - 8 (LSSR) Unlock Below 1 Ω
      7 (E) - 8 (LSSR) Lock 10 kΩ or higher
      2. Fig 2: Inspecting Front Door Lock Assembly LH (Door Lock Position Switch)
      G05310940Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE FRONT DOOR LOCK ASSEMBLY LH 

    OK: GO TO Next Step 

  5. CHECK WIRE HARNESS (ECU - DOOR LOCK) 
    1. Disconnect the M10 ECU connector.
    2. Disconnect the M12 door lock connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART

      Tester Connection Specified Condition
      M10-1 (A-) - M12-1 (UL) Below 1 Ω
      M10-2 (A+) - M12-4 (L) Below 1 Ω
      M10-13 (LSWE) - M12-7 (E) Below 1 Ω
      M10-1 (A-) - Body ground 10 kΩ or higher
      M10-2 (A+) - Body ground 10 kΩ or higher
      M10-13 (LSWE) - Body ground 10 kΩ or higher
      4. Fig 3: Identifying M10 ECU And M12 Door Lock Connector Terminals
      G05310941Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: GO TO Next Step 

  6. CHECK WIRE HARNESS (DOOR LOCK - SWITCH) 
    1. Disconnect the M12 door lock connector.
    2. Disconnect the Q13 switch connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART

      Tester Connection Specified Condition
      M12-8 (LSSR) - Q13-16 (LSW) Below 1 Ω
      M12-8 (LSSR) - Body ground 10 kΩ or higher
      4. Fig 4: Identifying M12 Door Lock And Q13 Switch Connector Terminals
      G05310942Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE FRONT MULTIPLEX NETWORK DOOR ECU LH 

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