WIRELESS DOOR LOCK CONTROL SYSTEM(w/ Entry and Start System) No Answer-Back

DTC Code DTC Name
No Answer-Back

DESCRIPTION

In some cases, wireless door lock control functions are normal but the hazard warning light answer-back function does not operate. In such cases, hazard warning light signal outputs from the main body ECU (multiplex network body ECU) may be malfunctioning.

WIRING DIAGRAM

B295975E06

CAUTION / NOTICE / HINT

Note:

The wireless door lock control system key reminder warning system uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the wireless door lock control system after confirming that the communication systems are functioning properly.

Click hereClick here

PROCEDURE

  1. READ VALUE USING GTS (Hazard Answer Back)

    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Customize Setting / Wireless Door Lock.

    5. Select the setting by referring to the table below.

      Wireless Door Lock

      Tester Display

      Description

      Default

      Setting

      ECU

      Hazard Answer Back

      When the doors are locked by wireless operation, the hazard warning lights flash once.

      When the doors are unlocked by wireless operation, the hazard warning lights flash twice.

      ON

      0:OFF,1:ON

      Main body ECU (Multiplex network body ECU)

    Result

    Result

    Proceed to

    Customize setting is ON

    A

    Customize setting is OFF

    B
    B

    PERFORM CUSTOMIZE FUNCTION

    Click hereClick here

    A

  2. CHECK WIRELESS DOOR LOCK CONTROL FUNCTIONS

    1. Check the wireless door lock control function using the electrical key transmitter sub-assembly.

    Result

    Result

    Proceed to

    Wireless door lock/unlock operates properly.

    A

    Wireless door lock/unlock does not operate properly.

    B
    B

    GO TO PROBLEM SYMPTOMS TABLE

    Click here

    A

  3. READ VALUE USING GTS (FR Door Lock Pos, FL Door Lock Pos, RR-Door Lock Pos SW, RL-Door Lock Pos SW)

    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Main Body / Data List.

    5. Read the Data List according to the display on the GTS.

      Body Electrical > Main Body > Data List

      Tester Display

      Measurement Item

      Range

      Normal Condition

      Diagnostic Note

      FR Door Lock Pos

      Front door RH unlock detection switch signal

      LOCK or UNLOCK

      LOCK: Front door RH locked

      UNLOCK: Front door RH unlocked

      -

      FL Door Lock Pos

      Front door LH unlock detection switch signal

      LOCK or UNLOCK

      LOCK: Front door LH locked

      UNLOCK: Front door LH unlocked

      -

      RR-Door Lock Pos SW

      Rear door RH and LH unlock detection switch signal

      ON or OFF

      ON: Rear door RH or LH unlocked

      OFF: Rear door RH and LH locked

      *1

      RL-Door Lock Pos SW

      Rear door RH and LH unlock detection switch signal

      ON or OFF

      ON: Rear door RH or LH unlocked

      OFF: Rear door RH and LH locked

      *2

      • *1: When checking RR-Door Lock Pos SW, make sure to check it with the rear door LH locked.

      • *2: When checking RL-Door Lock Pos SW, make sure to check it with the rear door RH locked.

      Body Electrical > Main Body > Data List

      Tester Display

      FR Door Lock Pos

      FL Door Lock Pos

      RR-Door Lock Pos SW

      RL-Door Lock Pos SW

    Result

    Result

    Proceed to

    OK

    A

    NG (for Driver door)

    B

    NG (for Front Passenger door)

    C

    NG (for Rear LH door)

    D

    NG (for Rear RH door)

    E
    B

    GO TO LIGHTING SYSTEM (Proceed to Door Unlock Detection Switch Circuit)

    Click hereClick here

    C

    GO TO LIGHTING SYSTEM (Proceed to Door Unlock Detection Switch Circuit)

    Click hereClick here

    D

    GO TO LIGHTING SYSTEM (Proceed to Door Unlock Detection Switch Circuit)

    Click hereClick here

    E

    GO TO LIGHTING SYSTEM (Proceed to Door Unlock Detection Switch Circuit)

    Click hereClick here

    A

  4. CHECK HAZARD WARNING LIGHTS OPERATION

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

      OK

      Hazard warning lights blink.

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    for LHD:Click hereClick here

    for RHD:Click hereClick here

    NG

    GO TO LIGHTING SYSTEM (Proceed to Hazard Warning Switch Circuit)

    Click hereClick hereClick hereClick here