LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2006 >> RX 330 FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 20 (Power Door Lock - Diagnostics) >> Key Lock-In Prevention Function Does Not Work Properly (Manual Operation And Operation Interlocked With Key Are Active) >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.
  1. READ VALUE OF HAND-HELD TESTER 
    1. Using the hand-held tester, check that the unlock warning switch signal is output when the switch is operated.

      Standard (Body ECU (Switch condition)): 

      ITEM NORMAL CONDITION TABLE

      Item Measurement Item/Display (Range) Normal Condition Diagnostic Note
      KEY UNLK WRN SW Key unlock warning SW signal/ON or OFF ON: Key is in ignition key cylinder
      OFF: Key is not in ignition key cylinder      		 -

    OK: Go to step   4 

    NG: GO TO NEXT STEP 

  2. INSPECT UNLOCK WARNING SWITCH ASSY 
    1. Remove the unlock warning switch.
    2. Inspect the unlock warning switch continuity.

      Standard: 

      TERMINAL SPECIFIED CONDITION TABLE

      Terminal No. Condition Specified Condition
      1 <==> 2 Free No continuity
      Pushed Continuity
      Fig 1: Inspecting Unlock Warning Switch Operation
      G04336534Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE UNLOCK WARNING SWITCH ASSY 

    OK: GO TO NEXT STEP 

  3. CHECK WIRE HARNESS (UNLOCK WARNING SWITCH ASSY <==> DRIVER SIDE JUNCTION BLOCK ASSY (BODY ECU)) 
    1. Disconnect the K3 unlock warning switch and B12 body ECU connectors.
    2. Check the continuity between the terminals of the unlock warning switch (K3) and body ECU (B6) connectors.

      Standard (Check for open): 

      SYMBOLS SPECIFIED CONDITION TABLE

      Symbols (Terminal No.) Specified Condition
      - (K3-2) <==> KSW (B6-14) Continuity
      - (K3-1) <==> Body ground
      Fig 2: Identifying K3 Unlock Warning Switch & B12 Body ECU Connectors
      G04336535Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY 

  4. READ VALUE OF HAND-HELD TESTER 
    1. Using the hand-held tester, check that the driver door courtesy switch signal is output when the switch is operated.

      Standard (Body ECU (Switch condition)): 

      ITEM NORMAL CONDITION TABLE

      Item Measurement Item/Display (Range) Normal Condition Diagnostic Note
      D DOR CTY SW Driver door courtesy SW signal/ON or OFF ON: Driver door is open
      OFF: Driver door is closed      		 -

    OK: REPLACE COURTESY LAMP SWITCH 

    NG: GO TO NEXT STEP 

  5. INSPECT COURTESY LAMP SWITCH 
    1. Remove the courtesy lamp switch.
    2. Inspect the courtesy lamp switch continuity.

      Standard: 

      TERMINAL SPECIFIED CONDITION TABLE

      Terminal No. Condition Specified Condition
      1 <==> Body ground Free Continuity
      Pushed No continuity
      Fig 3: Removing Courtesy Lamp Switch
      G04070110Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK: GO TO NEXT STEP 

  6. CHECK WIRE HARNESS 
    1. Disconnect the courtesy lamp switch and body ECU connectors.
    2. Check the continuity between the terminals of the courtesy lamp switch (D12) and body ECU (B5) connectors.

      Standard (Check for open) : 

      SYMBOLS SPECIFIED CONDITION TABLE

      Symbols (Terminal No.) Specified Condition
      - (D12-1) <==> DCTY (B5-23) Continuity
      Fig 4: Identifying Courtesy Lamp Switch D12 & B5 Body ECU Connector
      G04336537Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY 

scientia non olet · About LEMON Manuals