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Home >> Lexus >> 2008 >> ES 350 >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Door Lock >> Power Door Lock Control System >> Driver Side Door Key Lock and Unlock Switch Circuit >> Inspection Procedure
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Inspection Procedure

  1. READ VALUE OF TECHSTREAM (DOOR KEY LOCK AND UNLOCK SWITCH) 
    1. Connect Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the tester on.
    4. Enter the following menus: Body Electrical / Main Body / Data List.
    5. Read the Data List according to the display on the tester.

      Main Body: 

      MAIN BODY DATA LIST

      Tester Display Measurement Item/Range Normal Condition
      Dor Key SW-Lock Driver door lock/unlock switch lock signal (key-linked lock switch) /ON or OFF ON: Driver side door key cylinder is turned to LOCK
      OFF: Driver side door key cylinder is not turned to LOCK
      Dor Key SW-UIck Driver door lock/unlock switch unlock signal (key-linked unlock switch) /ON or OFF ON: Driver side door key cylinder is turned to UNLOCK
      OFF: Driver side door key cylinder is not turned to UNLOCK

      OK: 

      The display is as specified in the normal condition column. 

    NG: Go to step 2 

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

  2. INSPECT FRONT DOOR LOCK ASSEMBLY (DOOR KEY LOCK AND UNLOCK SWITCH) 
    1. Remove the front door lock assembly LH.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      RESISTANCE SPECIFICATION CHART

      Tester Connection Condition Specified Condition
      7 - 9 ON (Door lock set to LOCK) Below 1 Ω
      7 - 9
      7 - 10      		 OFF (Free) 10 kΩ or higher
      7 - 10 ON (Door lock set to UNLOCK) Below 1 Ω
      Fig 1: Identifying Front Door Lock Assembly Connector Terminal
      G04980335Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE FRONT DOOR LOCK ASSEMBLY 

    OK: Go to next step 

  3. CHECK WIRE HARNESS (FRONT DOOR LOCK ASSEMBLY - MAIN BODY ECU) 
    1. Disconnect the front door lock assembly LH connector.
      Fig 2: Identifying Front Door Lock Assembly LH Connector And Main Body ECU Connector
      G05252699Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the main body ECU connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      RESISTANCE SPECIFICATION CHART

      Tester Connection (Symbols) Condition Specified Condition
      I2 - 9 (L) - DK-16 Always Below 1 Ω
      12 - 10 (UL) - E61-10(UL3) Always Below 1 Ω
      I2-7 (E) - Body ground Always Below 1 Ω
      I2-9 (L) - Body ground Always 10 kΩ or higher
      12-10 (UL) - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE MAIN BODY ECU 

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