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

DESCRIPTION

When the back door entry lock and unlock functions do not operate, one of the following may be malfunctioning: 1) the power door lock control system, 2) back door electrical key oscillator (for outer), 3) main body ECU, or 4) certification ECU.

WIRING DIAGRAM

A004P78E01

CAUTION / NOTICE / HINT

Note


  • The 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 entry and start system (for entry function) after confirming that the communication system is 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 tester and vehicle begins.

  • When checking the entry lock operation multiple times, the lock operation may be limited to 2 consecutive operations according to 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.

PROCEDURE


  1. CHECK POWER DOOR LOCK OPERATION


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

      OK
      Door locks operate normally.

    NG

    GO TO POWER DOOR LOCK CONTROL SYSTEM Click here

    OK

  2. CHECK WAVE ENVIRONMENT


    1. A004PJ0E02
      *1 Vehicle Center
      *2 Approximately 0.3 m

      Bring the electrical key transmitter approximately 0.3 m (0.984 ft.) from the outside electrical key oscillator (in rear bumper) and perform an entry back door open function check.

      Note

      If the key is brought within 0.2 m (0.656 ft.) of the rear bumper, communication may not possible.

      Tech Tips

      If the inspection result is that the problem only occurs in certain locations or at certain times of day, 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 function operates normally.

    OK

    AFFECTED BY WAVE INTERFERENCE

    NG

  3. KEY DIAGNOSTIC MODE


    1. A004PJ0E02
      *1 Vehicle Center
      *2 Approximately 0.3 m

      Diagnostic mode inspection (outside electrical key oscillator).


      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 + Back Door (outside).

      5. When the electrical key transmitter is brought within 0.7 to 1.0 m (2.30 to 3.28 ft.) of the outside electrical key oscillator (in rear bumper), check that the wireless door lock buzzer sounds.

        OK
        Wireless door lock buzzer sounds.

    OK

    REPLACE CERTIFICATION ECU

    NG

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

    A004T93E01
    Text in Illustration
    *1

    Front view of wire harness connector

    (to Outside Electrical Key Oscillator (Outside Luggage))
    *2

    Front view of wire harness connector

    (to Certification ECU)

    1. Disconnect the H19 oscillator connector.

    2. Disconnect the D59 ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D59-19 (CLG8) - H19-1 (CLG5) Always Below 1 Ω
      D59-20 (CG8B) - H19-2 (CLGB) Always Below 1 Ω
      D59-19 (CLG8) - Body ground Always 10 kΩ or higher
      D59-20 (CG8B) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK ELECTRICAL KEY OSCILLATOR (OPERATION)

    A004MQOE01
    Text in Illustration
    *1

    Component without harness connected

    (Outside Electrical Key Oscillator (Outside Luggage))

    1. Remove the outside electrical key oscillator (outside luggage) Click here.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (CLG5) - 2 (CLGB) Always Below 1 Ω

    OK

    REPLACE CERTIFICATION ECU

    NG

    REPLACE OUTSIDE ELECTRICAL KEY OSCILLATOR (OUTSIDE LUGGAGE) Click here