SMART ENTRY AND START SYSTEM (for Entry Function) Driver Side Door Entry Lock and Unlock Functions do not Operate

DESCRIPTION

When the entry lock and unlock functions do not operate only for the driver door, an error in output request codes from the driver door or malfunction in the front door outside handle assembly is suspected. If the entry functions for the other doors operate normally, then the communication circuit between the key and door control receiver assembly is functioning normally. In this case, radio wave interference or a malfunction in the request code sending circuit (from the certification ECU (smart key ECU assembly) to the front door outside handle assembly (for driver side)) is suspected.

WIRING DIAGRAM

A01EL8EE01

INSPECTION PROCEDURE

Note


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

  • Confirm that another key is not in the cabin.

  • Before replacing the certification ECU (smart key ECU assembly), refer to Service Bulletin.

PROCEDURE


  1. CHECK POWER DOOR LOCK OPERATION


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

      OK
      Door locks operate normally.

    NG

    GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Problem Symptoms Table) Click here

    OK

  2. CHECK WAVE ENVIRONMENT


    1. A01EJNAE02

      Bring the key near the front door outside handle assembly (for driver side), and perform a driver door entry lock and unlock operation check.

      Note

      If the key is brought within 0.2 m (0.656 ft.) of the door outside handle assembly, communication is not possible.

      Tech Tips


      • When the key is brought near the front door outside handle assembly (for driver side), the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.

      • If the operation is normal, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.

      OK
      Entry functions operate normally.

    NG

    CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - FRONT DOOR OUTSIDE HANDLE) Click here

    OK

    AFFECTED BY WAVE INTERFERENCE

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


    1. Disconnect the certification ECU (smart key ECU assembly) connector.

    2. A01ELGWE03
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Certification ECU (Smart Key ECU Assembly))
      *2

      Front view of wire harness connector

      (to Front Door Outside Handle Assembly (for Driver Side))

      Disconnect the front door outside handle assembly (for driver side) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D25-3 (CLG1) - z3-6 (ANT1) Always Below 1 Ω
      D25-4 (CG1B) - z3-3 (ANT2) Always Below 1 Ω
      D25-32 (POS1) - z3-5 (B) Always Below 1 Ω
      D25-3 (CLG1) - Body ground Always 10 kΩ or higher
      D25-4 (CG1B) - Body ground Always 10 kΩ or higher
      D25-32 (POS1) - Body ground Always 10 kΩ or higher
      z3-6 (ANT1) - Body ground Always 10 kΩ or higher
      z3-3 (ANT2) - Body ground Always 10 kΩ or higher
      z3-5 (B) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (FRONT DOOR OUTSIDE HANDLE - BODY GROUND)


    1. A01EIW9E03
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Front Door Outside Handle Assembly (for Driver Side))

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z3-2 (GND) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. INSPECT FRONT DOOR OUTSIDE HANDLE ASSEMBLY (DOOR OSCILLATOR, LOCK/UNLOCK SENSOR SIGNAL INPUT)


    1. Reconnect the certification ECU (smart key ECU assembly) connector.

    2. A01EIW9E04
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Front Door Outside Handle Assembly (for Driver Side))

      Measure the voltage and check for pulses according to the value(s) in the table below.

      Standard
      Tester Connection Condition Specified Condition
      z3-6 (ANT1) - z3-3 (ANT2)

      • Engine switch off

      • All door closed

      • Key not in cabin

      		 No pulse generation
      z3-6 (ANT1) - z3-3 (ANT2)

      • Engine switch off

      • All door closed

      • Key not in cabin

      • All doors locked by wireless lock function

      		 Pulse generation
      z3-5 (B) - z3-2 (GND) Engine switch off 9 to 14 V
      z3-5 (B) - z3-2 (GND) Engine switch on (IG) Below 2 V

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

  6. REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (for Driver Side)


    1. Replace the front door outside handle assembly (for driver side) Click here


    NEXT

  7. CHECK FRONT DOOR OUTSIDE HANDLE ASSEMBLY (for Driver Side)


    1. Check that the entry functions operate normally Click here.

      OK
      Entry functions operate normally.

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

    END (FRONT DOOR OUTSIDE HANDLE ASSEMBLY WAS DEFECTIVE)