SMART 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 function operates, the communication line between the vehicle and electrical key transmitter is normal. As a faulty part, the touch sensor circuit (certification ECU (smart key ECU assembly) → passenger side door outside handle → passenger side door key oscillator) can be considered.

WIRING DIAGRAM

A017DOSE09

INSPECTION PROCEDURE

Note

Before performing the inspection, check that there are no problems related to "CAN COMMUNICATION SYSTEM" and "LIN COMMUNICATION SYSTEM".

PROCEDURE


  1. CHECK POWER DOOR LOCK OPERATION


    1. When the door control switch on the master switch assembly is operated, check that the locked doors unlock Click here.

      OK
      Locked doors unlock.

    NG

    GO TO POWER DOOR LOCK CONTROL SYSTEM Click here

    OK

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


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Main Body / Data List.

    5. Read the Data List according to the display on the intelligent tester.

      Main Body (Main Body ECU (Instrument Panel Junction Block))
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      P-Door Lock Pos 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

      		 -
      OK
      On the intelligent tester screen, the display changes between ON and OFF as shown in the chart above.
      Result
      Result Proceed to
      OK A
      NG

      B

      (Proceed to "Front Passenger Door LOCK/UNLOCK Functions do not Operate")

    B

    GO TO POWER DOOR LOCK CONTROL SYSTEM Click here

    A

  3. READ VALUE ON INTELLIGENT TESTER (DOOR OUTSIDE HANDLE)


    1. Select P Touch Sensor in the Data List and read the tester display.

      Entry & Start (Certification ECU (Smart Key ECU Assembly)):
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      P Touch Sensor Status of touch sensor front LH / ON or OFF

      ON: Touch sensor is touched

      OFF: Touch sensor is not touched

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

    NG

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

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

  4. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - DOOR ELECTRICAL KEY OSCILLATOR)


    1. A017GA4E06

      Disconnect the certification ECU (smart key ECU assembly) and door electrical key oscillator connectors.

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

      Standard resistance
      for LHD
      Tester Connection Condition Specified Condition
      D36-6 (SEL2) - z16-4 (SEL) Always Below 1 Ω
      D36-23 (SEN2) - z16-6 (SENS) Always Below 1 Ω
      D36-6 (SEL2) - Body ground Always 10 kΩ or higher
      D36-23 (SEN2) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      D36-6 (SEL2) - z14-4 (SEL) Always Below 1 Ω
      D36-23 (SEN2) - z14-6 (SENS) Always Below 1 Ω
      D36-6 (SEL2) - Body ground Always 10 kΩ or higher
      D36-23 (SEN2) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A017CMKE30

      Remove the front door outside handle Click here.

    2. Disconnect the touch sensor connector.

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

      Standard resistance
      for LHD
      Tester Connection Condition Specified Condition
      z15-6 (SGT) - z16-2 (SGT) Always Below 1 Ω
      z15-6 (SGT) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      z13-6 (SGT) - z14-2 (SGT) Always Below 1 Ω
      z13-6 (SGT) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. REPLACE DOOR ELECTRICAL KEY OSCILLATOR


    1. Replace the door electrical key oscillator Click here.


    NEXT

  7. CHECK DOOR ELECTRICAL KEY OSCILLATOR (OPERATION)


    1. Check that the entry functions operate normally.

      OK
      Entry functions operate normally.

    NG

    REPLACE FRONT DOOR OUTSIDE HANDLE Click here

    OK

    END (DOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)

  8. REPLACE FRONT DOOR OUTSIDE HANDLE


    1. Replace the front door outside handle Click here.


    NEXT

  9. CHECK FRONT DOOR OUTSIDE HANDLE (OPERATION)


    1. Check that the entry functions operate normally.

      OK
      Entry functions operate normally.

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

    END (FRONT DOOR OUTSIDE HANDLE IS DEFECTIVE)