WIRELESS DOOR LOCK CONTROL SYSTEM No Answer-Back

DESCRIPTION

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

WIRING DIAGRAM

A01NHGBE06

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 (ANSWER-BACK OPERATION)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Main Body / Utility / Customize.

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

      Wireless Door Lock Control System
      Display (item) Default Function Setting
      Hazard Answer Back ON

      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 or OFF
      Wireless Buzzer Resp* ON Wireless door lock buzzer response / ON or OFF ON or OFF

      • *: w/Wireless buzzer answer back function

      Result
      Result Proceed to
      Both items are on. A
      Either item is off. B

    B

    PERFORM CUSTOMIZE FUNCTION (ANSWER-BACK FUNCTION) Click here

    A

  2. CHECK WIRELESS DOOR LOCK CONTROL FUNCTIONS


    1. Check the wireless door lock control function by the electrical key transmitter.

      Result
      Result Proceed to
      Wireless door lock/unlock operates normally. A
      Wireless door lock/unlock does not operate normally. B

    B

    GO TO ENTRY AND START SYSTEM Click here

    A

  3. READ VALUE USING INTELLIGENT TESTER (DOOR LOCK POSITION SWITCH)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power 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 (Multiplex Network Body ECU))
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      FR Door Lock Pos Front right side lock position switch signal/LOCK or UNLOCK

      LOCK: Front right side door locked

      UNLOCK: Front right side door unlocked

      		 -
      FL Door Lock Pos Front left side door lock position switch signal/LOCK or UNLOCK

      LOCK: Front left side door locked

      UNLOCK: Front left side door unlocked

      		 -
      RR-Door Lock Pos SW Rear right side door lock position switch signal/ON or OFF

      ON: Rear right side door unlocked

      OFF: Rear right side door locked

      		 -
      RL-Door Lock Pos SW Rear left side door lock position switch signal/ON or OFF

      ON: Rear left side door unlocked

      OFF: Rear left side door locked

      		 -
      OK
      The intelligent tester should display as shown in the table according to door lock operation.
      Result
      Result Proceed to
      OK A
      NG (for Front RH Side) B
      NG (for Front LH Side) C
      NG (for Rear RH Side) D
      NG (for Rear LH Side) E

    B

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

    C

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

    D

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

    E

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

    A

  4. CHECK WIRELESS ANSWER-BACK OPERATION


    1. Check the wireless answer-back operation by wireless door lock control function.

      Result
      Result Proceed to
      Only hazard warning light answer-back does not occur. A
      Only wireless door lock buzzer answer-back does not occur. B

    B

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

    A

  5. CHECK HAZARD WARNING LIGHT OPERATION


    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

  6. PERFORM ACTIVE TEST USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the intelligent tester on.

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

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

      Main Body (Main Body ECU (Multiplex Network Body ECU))
      Tester Display Test Part Control Range Diagnostic Note
      Hazard Turn signal flasher relay ON/OFF Observe headlights and rear combination lights for correct operation
      Result
      Result Proceed to
      Turn signal flasher relay does not turn on/off. A
      Turn signal flasher relay turns on/off. B

    B

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    A

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


    1. Disconnect the F44 turn signal flasher assembly and F13 main body ECU connectors.

    2. A01NFU9E07
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Turn Signal Flasher Assembly)
      *2

      Front view of wire harness connector

      (to Main Body ECU (Multiplex Network Body ECU))

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F44-8 (HAZ) - F13-3 (HAZ) Always Below 1 Ω
      F44-8 (HAZ) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

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


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the intelligent tester on.

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

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

      Main Body (Main Body ECU (Multiplex Network Body ECU))
      Tester Display Test Part Control Range Diagnostic Note
      Wireless Buzzer Turns the wireless door lock buzzer ON/OFF -
      Result
      Result Proceed to
      Wireless door lock buzzer does not turn on/off. A
      Wireless door lock buzzer turns on/off. B

    B

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    A

  9. CHECK HARNESS AND CONNECTOR (WIRELESS DOOR LOCK BUZZER - INSTRUMENT PANEL JUNCTION BLOCK)


    1. Disconnect the A50 wireless door lock buzzer and 2F instrument panel junction block assembly connectors.

    2. A01NEXFE03
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Wireless Door Lock Buzzer)
      *2

      Front view of wire harness connector

      (to Instrument Panel Junction Block Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A50-1 (B) - 2F-25 (BZR) Always Below 1 Ω
      A50-2 (E) - Body ground Always Below 1 Ω
      A50-1 (B) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. Remove the instrument panel junction block assembly Click here.

      A01NCOZE08
      Text in Illustration
      *1

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2F-25 (BZR) - 7A-21 (BZR) Always Below 1 Ω

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    OK

  11. REPLACE WIRELESS DOOR LOCK BUZZER


    1. Temporarily replace the wireless door lock buzzer with a new one Click here.


    NEXT

  12. CHECK WIRELESS DOOR LOCK BUZZER OPERATION


    1. Check the operation of the wireless answer-back function.

      OK
      Wireless answer-back function operates normally.

    NG

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    OK

    END (WIRELESS DOOR LOCK BUZZER WAS DEFECTIVE)

  13. REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)


    1. Temporarily replace the main body ECU (multiplex network body ECU) with a new one Click here.


    NEXT

  14. CHECK WIRELESS DOOR LOCK BUZZER OPERATION


    1. Check the operation of the wireless function.

      OK
      Wireless function operates normally.

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

    END (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) WAS DEFECTIVE)