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

DESCRIPTION

When the front passenger door entry lock and unlock functions do not operate, any of the following may be malfunctioning: 1) power door lock control system; 2) front door outside handle assembly (for front passenger side); 3) door electrical key oscillator (for front passenger side); or 4) certification ECU (smart key ECU assembly).

WIRING DIAGRAM

A01CDN1E25

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.

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. READ VALUE USING INTELLIGENT TESTER (DOOR OUTSIDE HANDLE)


    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 / Entry & Start / Data List.

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

      Entry & Start (Certification ECU (Smart Key ECU Assembly))
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      P Touch Sensor Front passenger side door touch sensor / ON or OFF

      ON: Touch sensor touched

      OFF: Touch sensor not touched

      		 -
      P Trigger SW Front passenger side door lock switch / ON or OFF

      ON: Entry lock switch pressed

      OFF: Entry lock switch not pressed

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

    NG

    REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (for Front Passenger Side) Click here

    OK

  3. CHECK WAVE ENVIRONMENT


    1. A01CCSXE01
      Text in Illustration
      *A for RHD
      *B for LHD
      *1 Approximately 0.3 m (0.984 ft.)

      Bring the electrical key transmitter near the front door outside handle assembly (for front passenger side), and perform a front passenger 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 electrical key transmitter is brought near the front door outside handle assembly (for front passenger 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

    PERFORM KEY DIAGNOSTIC MODE INSPECTION Click here

    OK

    AFFECTED BY WAVE INTERFERENCE

  4. PERFORM KEY DIAGNOSTIC MODE INSPECTION


    1. A01CCSXE01
      Text in Illustration
      *A for RHD
      *B for LHD
      *1 0.7 to 1.0 m (2.30 to 3.28 ft.)

      Diagnostic mode inspection (door electrical key oscillator (for front passenger side))


      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 / Entry & Start / Key Communication Check / Overhead + Passenger Side.

      5. When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds.

        Tech Tips

        If the buzzer sounds, it can be determined that the door electrical key oscillator (for front passenger side) is operating normally.

        OK
        Wireless door lock buzzer sounds.

    NG

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

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

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


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

    2. Disconnect the door electrical key oscillator (for front passenger side) connector.

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

      Standard Resistance
      for RHD
      Tester Connection Condition Specified Condition
      G20-6 (SEL2) - z11-4 (SEL) Always Below 1 Ω
      G20-35 (CLG2) - z11-10 (CLG) Always Below 1 Ω
      G20-36 (CG2B) - z11-5 (CLGB) Always Below 1 Ω
      G20-6 (SEL2) - Body ground Always 10 kΩ or higher
      G20-35 (CLG2) - Body ground Always 10 kΩ or higher
      G20-36 (CG2B) - Body ground Always 10 kΩ or higher
      for LHD
      Tester Connection Condition Specified Condition
      G20-6 (SEL2) - z9-4 (SEL) Always Below 1 Ω
      G20-35 (CLG2) - z9-10 (CLG) Always Below 1 Ω
      G20-36 (CG2B) - z9-5 (CLGB) Always Below 1 Ω
      G20-6 (SEL2) - Body ground Always 10 kΩ or higher
      G20-35 (CLG2) - Body ground Always 10 kΩ or higher
      G20-36 (CG2B) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


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

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

      Standard Resistance
      for RHD
      Tester Connection Condition Specified Condition
      z10-2 (ANT2) - z11-8 (ANT2) Always Below 1 Ω
      z10-5 (ANT1) - z11-3 (ANT1) Always Below 1 Ω
      z10-2 (ANT2) - Body ground Always 10 kΩ or higher
      z10-5 (ANT1) - Body ground Always 10 kΩ or higher
      for LHD
      Tester Connection Condition Specified Condition
      z8-2 (ANT2) - z9-8 (ANT2) Always Below 1 Ω
      z8-5 (ANT1) - z9-3 (ANT1) Always Below 1 Ω
      z8-2 (ANT2) - Body ground Always 10 kΩ or higher
      z8-5 (ANT1) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. INSPECT FUSE (ECU-B)


    1. Remove the ECU-B fuse from the No. 1 engine room relay block and junction block.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      ECU-B fuse Always Below 1 Ω

    NG

    REPLACE FUSE (ECU-B)

    OK

  8. CHECK HARNESS AND CONNECTOR (DOOR ELECTRICAL KEY OSCILLATOR - BATTERY AND BODY GROUND)


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

      Standard Voltage
      for RHD
      Tester Connection Condition Specified Condition
      z11-1 (B) - Body ground Always 11 to 14 V
      for LHD
      Tester Connection Condition Specified Condition
      z9-1 (B) - Body ground Always 11 to 14 V

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

      Standard Resistance
      for RHD
      Tester Connection Condition Specified Condition
      z11-7 (GND) - Body ground Always Below 1 Ω
      for LHD
      Tester Connection Condition Specified Condition
      z9-7 (GND) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. REPLACE DOOR ELECTRICAL KEY OSCILLATOR (for Front Passenger Side)


    1. Replace the door electrical key oscillator (for front passenger side) Click here.


    NEXT

  10. CHECK DOOR ELECTRICAL KEY OSCILLATOR (for Front Passenger 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 (DOOR ELECTRICAL KEY OSCILLATOR WAS DEFECTIVE)