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

DESCRIPTION

If the driver side 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. The part at fault may be an unlock sensor circuit (front door outside handle assembly [for driver side] → certification ECU).

WIRING DIAGRAM

A01XJQVE01

CAUTION / NOTICE / HINT

Note


  • The entry and start system (for Entry Function) uses a multiplex communication system (LIN communication system) and the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting Click here. Troubleshoot the entry and start system (for Entry Function) after confirming that the communication systems are functioning properly.

  • When using the intelligent tester with the engine switch off to troubleshoot: Connect the intelligent tester to the DLC3 and turn a courtesy light switch on and off at 1.5-second intervals until communication between the intelligent tester and vehicle begins.

  • Check that there are no electrical key transmitters in the vehicle.

  • Before performing the inspection, check that DTC B1242 (wireless door lock control) is not output Click here.

  • When checking the entry lock operation multiple times, the lock operation may be limited to 2 consecutive operations depending on the settings. In order to perform the entry lock operation 3 or more times, an unlock operation must be performed once (any type of unlock operation is sufficient). However, only consecutive entry lock operations are limited. Using the wireless lock or other types of lock operations, it is possible to perform consecutive lock operations without this limitation.

  • Before replacing the certification ECU, refer to the Service Bulletin.

PROCEDURE


  1. CHECK POWER DOOR LOCK OPERATION


    1. When the door control switch on the multiplex network master switch assembly is operated, check that the doors unlock and lock according to the switch operation Click here.

      OK
      Door locks operate normally.

    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
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      FR Door Lock Pos*1 Front RH side door lock position switch signal / UNLOCK or LOCK

      UNLOCK: Front RH side door unlocked

      LOCK: Front RH side door locked

      		 -
      FL Door Lock Pos*2 Front LH side door lock position switch signal / UNLOCK or LOCK

      UNLOCK: Front LH side door unlocked

      LOCK: Front LH side door locked

      		 -

      • *1: for RHD

      • *2: for LHD

      OK
      On the intelligent tester screen, the display changes between LOCK and UNLOCK as shown in the chart above.

    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 (UNLOCK SENSOR)


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

      Entry&Start
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      D-Door Touch Sensor Driver side door unlock sensor / ON or OFF

      ON: Driver side door unlock sensor touched

      OFF: Driver side door unlock sensor not touched

      		 -
      OK
      "ON" (unlock sensor is touched) and "OFF" (unlock sensor is not touched) appear on the screen.

    OK

    REPLACE CERTIFICATION ECU

    NG

  4. CHECK HARNESS AND CONNECTOR (FRONT DOOR OUTSIDE HANDLE - CERTIFICATION ECU)


    1. Disconnect the O1*1 or N1*2 handle connector.


      • *1: for LHD

      • *2: for RHD

    2. Disconnect the G38 ECU connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      O1-4 (SENS) - G38-20 (SEN1) Always Below 1 Ω
      G38-20 (SEN1) - Body ground Always 10 kΩ or higher
      G38-15 (E) - Body ground Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      N1-4 (SENS) - G38-20 (SEN1) Always Below 1 Ω
      G38-20 (SEN1) - Body ground Always 10 kΩ or higher
      G38-15 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK FRONT DOOR OUTSIDE HANDLE ASSEMBLY (UNLOCK SENSOR)


    1. Measure the voltage according to the value(s) in the table below.

      A01XDP7E01
      Text in Illustration
      *a

      Component with harness connected

      (Certification ECU)

      		 - -
      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G38-20 (SEN1) - G38-15 (E) Engine switch off, all doors locked, key not sufficiently close to vehicle and unlock sensor (for driver side) off → on Pulse generation → Below 2 V

    OK

    REPLACE CERTIFICATION ECU

    NG

    REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER SIDE) Click here