ENTRY AND START SYSTEM Front Passenger Side Door Entry Unlock Function does not Operate

DESCRIPTION

If the front passenger door entry unlock function does not operate but the entry lock operation operates, the communication line between the vehicle and electrical key transmitter is normal. Either of the following may have occurred: 1) the door outside handle touch sensor is malfunctioning; or 2) the front door ECU (for front passenger side) receives the door outside handle touch sensor ON signal, but is unable to send the signal to the certification ECU through CAN communication.

WIRING DIAGRAM

Refer to Front Passenger Side Door Entry Lock and Unlock Functions do not Operate Click here.

PROCEDURE


  1. CHECK POWER DOOR LOCK OPERATION


    1. When the master switch assembly's door control switch is operated, check that the locked doors unlock.

      Result
      Result Proceed to
      Door locks operate normally OK
      Door locks do not operate normally NG

    NG

    GO TO POWER DOOR LOCK CONTROL SYSTEM Click here

    OK

  2. READ VALUE USING INTELLIGENT TESTER (DOOR LOCK POSITION SWITCH)


    1. Using the intelligent tester, read the Data List.

      Passenger Door (Front door ECU RH*1) (Front door ECU LH*2)
      Tester Display Measurement Item/Display Normal Condition Diagnostic Note
      Lock Position SW Front passenger side door lock position switch signal / ON or OFF

      ON: Front passenger side door is unlocked

      OFF: Front passenger side door is locked

      		 -

      Tech Tips

      *1: for LHD

      *2: for RHD

      OK
      On intelligent tester screen, item changes between ON and OFF according to above chart.

    NG

    GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Only Passenger Door LOCK/UNLOCK Functions do not Operate) Click here

    OK

  3. READ VALUE USING INTELLIGENT TESTER (ENTRY SENSOR)


    1. Using the intelligent tester, read the Data List.

      Passenger Door (Front door ECU RH*1) (Front door ECU LH*2)
      Tester Display Measurement Item/Display Normal Condition Diagnostic Note
      Entry Sensor Front passenger side door touch sensor / ON or OFF

      ON: Front passenger side door sensor is touched

      OFF: Front passenger side door sensor is not touched

      		 -

      Tech Tips

      *1: for LHD

      *2: for RHD

      OK
      On intelligent tester screen, item changes between ON and OFF according to above chart.

    NG

    CHECK HARNESS AND CONNECTOR (DOOR ELECTRICAL KEY OSCILLATOR - FRONT DOOR ECU) Click here

    OK

  4. CHECK FRONT DOOR ECU (OPERATION)


    1. Replace the front door ECU RH*1 or LH*2 with a new one or normally functioning one Click here.

      Tech Tips

      *1: for LHD

      *2: for RHD

    2. Check that the entry function operates normally.

      OK
      Operates normally

    OK

    END (FRONT DOOR ECU IS DEFECTIVE)

    NG

    REPLACE CERTIFICATION ECU

  5. CHECK HARNESS AND CONNECTOR (DOOR ELECTRICAL KEY OSCILLATOR - FRONT DOOR ECU)

    A001D9QE02
    for LHD
    *1 Front view of wire harness connector: (to Front Door ECU RH)
    *2 Front view of wire harness connector: (to Door Electrical Key Oscillator)

    1. for LHD:


      1. Disconnect the N1 ECU connector.

      2. Disconnect the N20 oscillator connector.

      3. Measure the resistance according to the value(s) in the table below.

        Standard resistance
        Tester Connection Condition Specified Condition
        N1-15 (SEL) - N20-4 (SEL) Always Below 1 Ω
        N1-15 (SEL) - Body ground Always 10 kΩ or higher
      A001F5HE02
      for RHD
      *1 Front view of wire harness connector: (to Front Door ECU LH)
      *2 Front view of wire harness connector: (to Door Electrical Key Oscillator)

    2. for RHD:


      1. Disconnect the N10 ECU connector.

      2. Disconnect the N22 oscillator connector.

      3. Measure the resistance according to the value(s) in the table below.

        Standard resistance
        Tester Connection Condition Specified Condition
        N10-15 (SEL) - N22-4 (SEL) Always Below 1 Ω
        N10-15 (SEL) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK HARNESS AND CONNECTOR (DOOR ELECTRICAL KEY OSCILLATOR - FRONT DOOR OUTSIDE HANDLE RH)

    A001DR3E01
    for LHD
    *1 Front view of wire harness connector: (to Door Electrical Key Oscillator)
    *2 Front view of wire harness connector: (to Front Door Outside Handle RH)

    1. for LHD:


      1. Disconnect the N20 oscillator connector.

      2. Disconnect the N21 handle connector.

      3. Measure the resistance according to the value(s) in the table below.

        Standard resistance
        Tester Connection Condition Specified Condition
        N20-2 (SGT3) - N21-6 (SGT3) Always Below 1 Ω
        N20-2 (SGT3) - Body ground Always 10 kΩ or higher
      A001BCBE01
      for RHD
      *1 Front view of wire harness connector: (to Door Electrical Key Oscillator)
      *2 Front view of wire harness connector: (to Front Door Outside Handle LH)

    2. for RHD:


      1. Disconnect the N22 oscillator connector.

      2. Disconnect the N23 handle connector.

      3. Measure the resistance according to the value(s) in the table below.

        Standard resistance
        Tester Connection Condition Specified Condition
        N22-2 (SGT4) - N23-6 (SGT3) Always Below 1 Ω
        N22-2 (SGT4) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK DOOR ELECTRICAL KEY OSCILLATOR (OPERATION)


    1. Replace the door electrical key oscillator with a new one or normally functioning one Click here.

    2. Check that the entry function operates normally.

      OK
      Operates normally

    OK

    END (DOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)

    NG

  8. CHECK FRONT DOOR OUTSIDE HANDLE (OPERATION)


    1. Replace the front door outside handle RH*1 or LH*2 with a new one or normally functioning one Click here.

      Tech Tips

      *1: for LHD

      *2: for RHD

    2. Check that the entry function operates normally.

      OK
      Operates normally

    OK

    END (FRONT DOOR OUTSIDE HANDLE IS DEFECTIVE)

    NG

  9. CHECK FRONT DOOR ECU (OPERATION)


    1. Replace the front door ECU RH*1 or LH*2 with a new one or normally functioning one Click here.

      Tech Tips

      *1: for LHD

      *2: for RHD

    2. Check that the entry function operates normally.

      OK
      Operates normally

    OK

    END (FRONT DOOR ECU IS DEFECTIVE)

    NG

    REPLACE CERTIFICATION ECU