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

DESCRIPTION

When the driver door entry lock and unlock functions do not operate, one of the following may be malfunctioning: 1) power door lock control system, 2) door electrical key oscillator (driver side), or 3) certification ECU (smart key ECU assembly).

WIRING DIAGRAM

A0160PME15

INSPECTION PROCEDURE

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
    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
      D-Door Touch Sensor Driver side door touch sensor / ON or OFF

      ON: Touch sensor is touched

      OFF: Touch sensor is not touched

      -
      D-Door Trigger SW Driver side door lock switch / ON or OFF

      ON: Entry lock switch is pressed

      OFF: Entry lock switch is not pressed

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

    NG
    OK
  3. CHECK WAVE ENVIRONMENT


    1. A0160MPE02

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

      • If the operation check 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
    OK
  4. PERFORM KEY DIAGNOSTIC MODE INSPECTION


    1. A0160MPE01

      Diagnostic mode inspection (door electrical key oscillator (driver 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 + Driver 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 (driver side) is operating normally.

        OK
        Wireless door lock buzzer sounds.

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


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

    2. A015YHME15

      Disconnect the door electrical key oscillator (driver side) connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      P33-5 (SEL1) - o2-4 (SEL) Always Below 1 Ω
      P33-34 (CG1B) - o2-5 (CLGB) Always Below 1 Ω
      P33-5 (SEL1) - Body ground Always 10 kΩ or higher
      P33-34 (CG1B) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      P33-5 (SEL2) - n2-4 (SEL) Always Below 1 Ω
      P33-34 (CG2B) - n2-5 (CLGB) Always Below 1 Ω
      P33-5 (SEL2) - Body ground Always 10 kΩ or higher
      P33-34 (CG2B) - Body ground Always 10 kΩ or higher

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


    1. A015Z5PE71

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

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      o1-2 (ANT2) - o2-8 (ANT2) Always Below 1 Ω
      o1-5 (ANT1) - o2-3 (ANT1) Always Below 1 Ω
      o1-2 (ANT2) - Body ground Always 10 kΩ or higher
      o1-5 (ANT1) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      n1-2 (ANT2) - n2-8 (ANT2) Always Below 1 Ω
      n1-5 (ANT1) - n2-3 (ANT1) Always Below 1 Ω
      n1-2 (ANT2) - Body ground Always 10 kΩ or higher
      n1-5 (ANT1) - Body ground Always 10 kΩ or higher

    NG
    OK
  7. INSPECT FUSE (MPX-B)


    1. Remove the MPX-B fuse from the No. 1 engine room junction block.

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

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

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


    1. A0161S1E25

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

      Standard Voltage
      for LHD
      Tester Connection Condition Specified Condition
      o2-1 (+B) - o2-7 (GND) Always 11 to 14 V
      for RHD
      Tester Connection Condition Specified Condition
      n2-1 (+B) - n2-7 (GND) Always 11 to 14 V

    NG
    OK
  9. REPLACE DOOR ELECTRICAL KEY OSCILLATOR (for Driver Side)


    1. Replace the door electrical key oscillator (driver side) Click here.


    NEXT
  10. CHECK DOOR ELECTRICAL KEY OSCILLATOR (for Driver Side)


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

      OK
      Entry functions operate normally.

    NG
    OK