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

DESCRIPTION

If the driver 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 driver 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 Driver Side Door Entry Lock and Unlock Functions do not Operate Click here.

INSPECTION PROCEDURE

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.

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

      ON: Driver side door is unlocked

      OFF: Driver 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 Driver 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.

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

      ON: Driver side door sensor is touched

      OFF: Driver 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 LH*1 or RH*2 with a new one or normally functioning one Click here.

      Tech Tips

      *1: for LHD

      *2: for RHD

    2. When is replaced

    3. Check that the entry function operates normally.

      OK
      Operates normally

    NG

    REPLACE CERTIFICATION ECU

    OK

    END (FRONT DOOR ECU IS DEFECTIVE)

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

    A01GNLHE64

    1. for LHD:


      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
      A01GNLHE65

    2. for RHD:


      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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    A01GKFSE99

    1. for LHD:


      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 (SGT2) - N23-6 (SGT1) Always Below 1 Ω
        N22-2 (SGT2) - Body ground Always 10 kΩ or higher
      A01GLUBE01

    2. for RHD:


      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 (SGT2) - N21-6 (SGT1) Always Below 1 Ω
        N20-2 (SGT2) - 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

    NG

    CHECK FRONT DOOR OUTSIDE HANDLE (OPERATION) Click here

    OK

    END (DOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)

  8. CHECK FRONT DOOR OUTSIDE HANDLE (OPERATION)


    1. Replace the front door outside handle LH*1 or RH*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

    NG

    CHECK FRONT DOOR ECU (OPERATION) Click here

    OK

    END (FRONT DOOR OUTSIDE HANDLE IS DEFECTIVE)

  9. CHECK FRONT DOOR ECU (OPERATION)


    1. Replace the front door ECU LH*1 or RH*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

    NG

    REPLACE CERTIFICATION ECU

    OK

    END (FRONT DOOR ECU IS DEFECTIVE)