WIRELESS DOOR LOCK CONTROL SYSTEM No Answer-Back

DESCRIPTION

In some cases, wireless door lock control functions are normal but the hazard warning lights and/or wireless door lock buzzer answer-back function(s) does not operate. In such cases, the certification ECU's (smart key ECU assembly) hazard warning lights and wireless door lock buzzer signal outputs may be malfunctioning.

WIRING DIAGRAM

A01CB04E15

INSPECTION PROCEDURE

Note

Troubleshooting should be started after confirming that the customize status of the answer-back function has been switched on.

PROCEDURE


  1. 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 (Main Body ECU)
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      D-Door Lock Pos SW Driver door lock position switch signal/ON or OFF

      ON: Driver door unlocked

      OFF: Driver door locked

      		 -
      P-Door Lock Pos SW Front passenger door lock position switch signal/ON or OFF

      ON: Front passenger door unlocked

      OFF: Front passenger door locked

      		 -
      RR-Door Lock Pos SW Side door RH lock position switch signal/ON or OFF

      ON: Slide door RH unlocked

      OFF: Slide door RH locked

      		 -
      RL-Door Lock Pos SW Slide door LH lock position switch signal/ON or OFF

      ON: Slide door LH unlocked

      OFF: Slide door LH locked

      		 -
      OK
      On the intelligent tester screen, the display changes between ON and OFF as shown in the chart above.
      Result
      Result Proceed to
      OK A
      NG (for Driver Side)

      B

      (Refer to "Driver Door LOCK/UNLOCK Functions do not Operate" in the problem symptoms table)
      NG (for Front Passenger Side)

      C

      (Refer to "Front Passenger Door LOCK/UNLOCK Functions do not Operate" in the problem symptoms table)
      NG (for Rear LH Side)

      D

      (Refer to "Rear Door LH LOCK/UNLOCK Functions do not Operate" in the problem symptoms table)
      NG (for Rear RH Side)

      E

      (Refer to "Rear Door RH LOCK/UNLOCK Functions do not Operate" in the problem symptoms table)

    B

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

    C

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

    D

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

    E

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

    A

  2. CHECK WIRELESS DOOR LOCK CONTROL FUNCTION


    1. Check the wireless door lock control functions by operating the transmitter switch.

      Result
      Result Proceed to
      Wireless door lock functions are normal but hazard warning lights answer-back does not occur. (w/ Wireless Buzzer Function) A
      Hazard warning lights answer-back does not occur. (w/o Wireless Buzzer Function) A
      Wireless door lock functions are normal but wireless door lock buzzer answer-back does not occur. (w/ Wireless Buzzer Function) B
      Doors cannot be locked and unlocked with transmitter. C

    B

    PERFORM ACTIVE TEST USING INTELLIGENT TESTER (WIRELESS DOOR LOCK BUZZER) Click here

    C

    GO TO PROBLEM SYMPTOMS TABLE Click here

    A

  3. CHECK HAZARD WARNING LIGHT


    1. Check that the hazard warning lights flash continuously when the hazard warning signal switch is pressed.

      OK
      Hazard warning lights flash continuously.

    NG

    GO TO LIGHTING SYSTEM Click here

    OK

  4. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (TURN SIGNAL FLASHER)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Enter the following menus: Body / Main Body / Active Test.

    4. Perform the Active Test according to the display on the intelligent tester.

      Main Body (Main Body ECU)
      Tester Display Test Part Control Range Diagnostic Note
      Hazard Turn Signal Flasher ON/OFF -
      OK
      Hazard warning lights turn ON/OFF.

    NG

    CHECK HARNESS AND CONNECTOR (TURN SIGNAL FLASHER - MAIN BODY ECU) Click here

    OK

    REPLACE MAIN BODY ECU Click here

  5. CHECK HARNESS AND CONNECTOR (TURN SIGNAL FLASHER - MAIN BODY ECU)


    1. Disconnect the G29 turn signal flasher connector.

    2. Disconnect the G50 main body ECU connector.

    3. Measure the resistance according to the values in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      G29-8 (HAZ) - G50-4 (HAZ) Always Below 1 Ω
      G29-8 (HAZ) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MAIN BODY ECU Click here

  6. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (WIRELESS DOOR LOCK BUZZER)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Enter the following menus: Body / Main Body / Active Test.

    4. Perform the Active Test according to the display on the intelligent tester.

      Entry&Start (Certification ECU (Smart Key ECU Assembly))
      Tester Display Test Part Control Range Diagnostic Note
      Wireless Buzzer Operation Turns the wireless door lock buzzer ON/OFF -
      OK
      Wireless buzzer turns ON/OFF.

    NG

    INSPECT WIRELESS DOOR LOCK BUZZER Click here

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

  7. INSPECT WIRELESS DOOR LOCK BUZZER

    A01CFJUE10
    Text in Illustration
    *1

    Component without harness connected

    (Wireless Door Lock Buzzer)

    1. Remove the wireless door lock buzzer Click here.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 950 to 1050 Ω

      Note


      • The buzzer excitation circuit is built into the certification ECU (smart key ECU assembly), not into the buzzer itself.

      • When battery voltage is directly applied to the buzzer, the buzzer will not sound.


    NG

    REPLACE WIRELESS DOOR LOCK BUZZER Click here

    OK

  8. CHECK HARNESS AND CONNECTOR (WIRELESS DOOR LOCK BUZZER - CERTIFICATION ECU)


    1. Disconnect the G20 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the A18 buzzer connector.

    3. Measure the resistance according to the values in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      G20-21 (BZR) - A18-1 Always Below 1 Ω
      A18-2 - Body ground Always Below 1 Ω
      A18-1 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)