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Home >> Lexus >> 2008 >> RX 400h FWD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Door Lock >> Power Door Lock Control System >> Door Control Switch Circuit >> Inspection Procedure

Inspection Procedure

  1. READ VALUE OF DATA LIST (FRONT PASSENGER SIDE DOOR CONTROL SWITCH ASSEMBLY) 
    1. Check the Data List to ensure proper function of the front passenger door lock switch.

      BODY (Body ECU): 

      DIAGNOSTIC NOTE

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Door Lock SW-LOCK Door lock switch signal /ON or OFF ON: Door lock switch is pushed to LOCK position
      OFF: Door lock switch is not pushed to LOCK position
      -
      Door Lock SW-UNLOCK Door unlock switch signal /ON or OFF ON: Door lock switch is pushed to UNLOCK position
      OFF: Door lock switch is not pushed to UNLOCK position
      -

      OK: The display is as specified in the normal condition. 

    NG: Go to step 2 

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

  2. INSPECT DOOR CONTROL SWITCH ASSEMBLY 
    1. Remove the door control switch assembly.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      2 - 3 Lock Below 1 Ω
      2 - 3
      1 - 2
      OFF (Free) 10 kΩ or higher
      1 - 2 Unlock Below 1 Ω
    3. Fig 1: Inspecting Door Control Switch Assembly
      G05270482Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE DOOR CONTROL SWITCH ASSEMBLY 

    OK: Go to next step 

  3. CHECK WIRE HARNESS (DOOR CONTROL SWITCH ASSEMBLY - INSTRUMENT PANEL J/B) 
    1. Disconnect the door control switch assembly connector.
    2. Disconnect the instrument panel J/B connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      D12-3 - 1J-3 Always Below 1 Ω
      D12-1 - 1J-4 Always Below 1 Ω
      D12-2 - Body ground Always Below 1 Ω
    4. Fig 2: Checking Wire Harness (Door Control Switch Assembly - Instrument Panel J/B)
      G05270483Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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