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Home >> Lexus >> 2008 >> IS 250 RWD, Automatic >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Door Lock >> Power Door Lock Control System >> Rear Door UNLOCK Detection Switch LH Circuit >> Inspection Procedure

Inspection Procedure

  1. READ VALUE OF DATA LIST (UNLOCK DETECTION SWITCH) 
    1. Check the Data List to ensure proper function of the door unlock detection switch.

      Main Body ECU: 

      TESTER DISPLAY REFERENCE

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Rr. Lock Pos SW Rear door lock position switch signal /ON or OFF ON: Rear door lock is in UNLOCK position
      OFF: Rear door lock is in LOCK position
      -

      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 REAR DOOR LOCK ASSEMBLY (UNLOCK DETECTION SWITCH) 
    1. Remove the rear door lock assembly LH.
    2. Measure the resistance according to the value (s) in the table below.

      Standard resistance

      STANDARD RESISTANCE SPECIFICATION

      Tester Connection Measurement Condition Door Lock Condition (Specified Condition)
      6-9 Battery positive (+) → Terminal 4
      Battery negative (-) → Terminal 1
      Lock 10 kΩ or higher
      6-9 Battery positive (+) → Terminal 1
      Battery negative (-) → Terminal 4
      Unlock Below 1 Ω
      Fig 1: Inspecting Rear Door Lock Assembly (Unlock Detection Switch)
      G05827961Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: REPLACE REAR DOOR LOCK ASSEMBLY 

      OK: Go to Next Step 

  3. CHECK WIRE HARNESS (REAR DOOR LOCK ASSEMBLY - MAIN BODY ECU RH) 
    1. Disconnect the rear door lock assembly LH connector.
    2. Disconnect the ECU (cowl side J/B RH) connector.
    3. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      STANDARD RESISTANCE SPECIFICATION

      Tester Connection (Symbols) Condition Specified Condition
      O8-6 (LSSR) - RA-2 Always Below 1 Ω
      O8-9 (E) - Body ground Always Below 1 Ω
      Fig 2: Identifying O8 Rear Door Lock Assembly And RA Main Body ECU RH Connectors
      G05827962Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: REPLACE MAIN BODY ECU RH (COWL SIDE J/B RH)