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Home › Lexus › 2008 › IS 250 AWD › Repair and Diagnosis › External Pages › Different car › Section 6 (Door Lock) › Power Door Lock Control System › All Doors LOCK/UNLOCK Functions do not Operate Via Door Control Switch › Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
  1. READ VALUE USING TECHSTREAM (DOOR CONTROL SWITCH) 
    1. Connect the Techstream to the DLC3
    2. Turn the engine switch on (IG)
    3. Turn the Techstream on
    4. Enter the following menus Body Electrical / Body / Data List
    5. Read the Data List according to the display on the Techstream

      Body (Main Body ECU RH (Cowl Side Junction Block RH)) 

      DATA LIST

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Door Lock SW-Lock Door manual lock switch signal / ON or OFF ON Front passenger side door control switch on (LOCK)
      OFF Front passenger side door control switch off      		 -
      Door Unlock SW-Unlock Door manual unlock switch signal / ON or OFF ON Front passenger side door control switch on (UNLOCK)
      OFF Front passenger side door control switch off      		 -

      OK: On the Techstream screen, ON or OFF will be displayed accordingly. 

    NG: Go to step 2 

    OK: REPLACE MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH) 

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

      Standard Resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Switch Condition Specified Condition
      3 (L) - 2 (E) Lock Below 1 Ω
      3 (L) - 2 (E) Off 10 kΩ or higher
      1 (UL) - 2 (E) Unlock Below 1 Ω
      1 (UL) - 2 (E) Off 10 kΩ or higher
      3. Fig 1: Inspecting Door Control Switch Assembly
      G05754225Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE DOOR CONTROL SWITCH ASSEMBLY  (See DOOR CONTROL SWITCH  )

    OK: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (DOOR CONTROL SWITCH - MAIN BODY ECU RH AND BODY GROUND) 
    1. Disconnect the main body ECU RH (cowl side junction block RH) connector
    2. Measure the resistance according to the value(s) in the table below

      Standard Resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      L9-1 (UL) - RJ-10 (UL1) Always Below 1 Ω
      L9-3 (L) - RJ-7 (L1) Always Below 1 Ω
      L9-2 (E) - Body ground Always Below 1 Ω
      L9-1 (UL) - Body ground Always 10 kΩ or higher
      L9-3 (L) - Body ground Always 10 kΩ or higher
      3. Fig 2: Identifying L9 And RJ Connectors Terminals
      G05754226Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH) 

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