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Home >> Toyota >> 2007 >> Yaris Base, 2D Hatchback, Standard >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> Door Lock >> Power Door Lock Control System >> Key Lock-in Prevention Function does not Work Properly >> Inspection Procedure

Inspection Procedure

  1. READ VALUE OF INTELLIGENT TESTER 
    1. Use the DATA LIST to check the operation of the front door courtesy light switch.

      Main Body ECU 

      DATA LIST CHART

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

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

    NG: Go to step  5

    OK: GO TO NEXT STEP 

  2. READ VALUE OF INTELLIGENT TESTER 
    1. Use the DATA LIST to check the operation of the door unlock warning switch. Main Body ECU

      Main Body ECU 

      DATA LIST CHART

      Item Measurement Item / Display (Range) Normal Condition Diagnostic Note
      KEY UNLK WRN SW Unlock warning switch signal / ON or OFF ON: Key Is in Ignition key cylinder
      OFF: No key is in Ignition key cylinder      		 -

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

    NG: REPLACE COMBINATION METER ASSEMBLY 

    OK: GO TO NEXT STEP 

  3. INSPECT UNLOCK WARNING SWITCH ASSEMBLY 
    1. Remove the unlock warning switch assembly.
    2. Measure the resistance.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      1-2 Not pushed 10 kΩ or higher
      1-2 Pushed Below 1 Ω

    NG: REPLACE UNLOCK WARNING SWITCH ASSEMBLY 

    Fig 1: Inspecting Unlock Warning Switch Assembly
    G04833179Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: GO TO NEXT STEP 

  4. CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SWITCH ASSEMBLY - MAIN BODY ECU) 
    1. Disconnect the D19 unlock warning switch connector.
    2. Disconnect the 4D main body ECU connector.
    3. Measure the resistance.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      D19-1-4D - 7 (KSW) Below 1 Ω
      D19-2 - Body ground Below 1 Ω
    4. Reconnect the unlock warning switch connector.
    5. Reconnect the main body ECU connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 2: Identifying D19 Unlock Warning Switch Connector And 4D Main Body ECU Connector
    G04833180Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: REPLACE MAIN BODY ECU 

  5. INSPECT FRONT DOOR COURTESY SWITCH ASSEMBLY (DRIVER SIDE) 
    1. Remove the door courtesy switch.
    2. Measure the resistance.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      1 - Body ground Not pushed (ON) Below 1 Ω
      1 - Body ground Pushed (OFF) 10 kΩ or higher
    3. Reinstall the courtesy switch.

    NG: REPLACE FRONT DOOR COURTESY SWITCH ASSEMBLY (DRIVER SIDE) 

    Fig 3: Inspecting Front Door Courtesy Switch (Driver Side)
    G04833360Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: GO TO NEXT STEP 

  6. CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY SWITCH - MAIN BODY ECU) 
    1. Disconnect the J2 door courtesy switch connector.
    2. Disconnect the 4A main body ECU connector.
    3. Measure the resistance.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      J2-1 - 4A-21 (DCTY) Below 1 Ω
    4. Reconnect the door courtesy switch connector.
    5. Reconnect the main body ECU connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 4: Identifying J2 Door Courtesy Switch Connector And 4A Main Body ECU Connector
    G04833182Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: REPLACE MAIN BODY ECU 

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