POWER DOOR LOCK CONTROL SYSTEM All Doors LOCK/UNLOCK Functions do not Operate Via Master Switch, Driver Side Door Key Cylinder

DESCRIPTION

The main body ECU (multiplex network body ECU) receives switch signals from the multiplex network master switch, and driver side door key cylinder switch signals from the front door lock (driver side). The main body ECU (multiplex network body ECU) activates the door lock motor on each door according to these signals.

WIRING DIAGRAM

A01NGX7E05

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK DOOR LOCK OPERATION


    1. Check door lock operation Click here.

      Result
      Result Proceed to
      All doors cannot be locked through multiplex network master switch A
      All doors cannot be locked through driver side door key cylinder B

    B

    READ VALUE USING INTELLIGENT TESTER (DOOR KEY LINKED LOCK AND UNLOCK SWITCH) Click here

    A

  2. CHECK DTC OUTPUT (LIN COMMUNICATION SYSTEM)


    1. Clear the DTC Click here.

    2. Recheck for DTCs.

      OK
      DTC B1206 is not output.

    NG

    GO TO LIN COMMUNICATION SYSTEM (DTC B1206) Click here

    OK

  3. REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY


    1. Replace the multiplex network master switch assembly Click here.


    NEXT

  4. CHECK DOOR LOCK OPERATION


    1. Check that all doors can be locked and unlocked by using the multiplex network master switch Click here.

      OK
      All doors can be locked and unlocked with the multiplex network master switch.

    NG

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

    OK

    END (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY WAS DEFECTIVE)

  5. READ VALUE USING INTELLIGENT TESTER (DOOR KEY LINKED LOCK AND UNLOCK 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
      Door Key SW-Lock Driver side door key-linked lock/unlock switch lock signal/ON or OFF

      ON: Driver side door key cylinder turned to lock position

      OFF: Driver side door key cylinder not turned to lock position

      		 -
      D Door Key SW-UL Driver side door key-linked lock/unlock switch unlock signal/ON or OFF

      ON: Driver side door key cylinder turned to unlock position

      OFF: Driver side door key cylinder not turned to unlock position

      		 -
      OK
      The intelligent tester indicates ON or OFF according to the key cylinder operation shown in the table.

    NG

    INSPECT FRONT DOOR LOCK ASSEMBLY (DOOR KEY LINKED LOCK AND UNLOCK SWITCH) Click here

    OK

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

  6. INSPECT FRONT DOOR LOCK ASSEMBLY (DOOR KEY LINKED LOCK AND UNLOCK SWITCH)


    1. Remove the front door lock assembly (for driver side) Click here.

    2. A01NHDVE01
      Text in Illustration
      *1

      Component without harness connected

      (Front Door Lock Assembly LH)
      *2 Lock
      *3 off
      *4 Unlock

      for LHD:


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

        Standard Resistance
        Tester Connection Key Cylinder Condition Specified Condition
        9 (L) - 7 (E) Locked Below 1 Ω
        9 (L) - 7 (E) off 10 kΩ or higher
        10 (UL) - 7 (E) Unlocked Below 1 Ω
        10 (UL) - 7 (E) off 10 kΩ or higher
    3. A01NF00E02
      Text in Illustration
      *1

      Component without harness connected

      (Front Door Lock Assembly RH)
      *2 Lock
      *3 off
      *4 Unlock

      for RHD:


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

        Standard Resistance
        Tester Connection Key Cylinder Condition Specified Condition
        6 (L) - 8 (E) Locked Below 1 Ω
        6 (L) - 8 (E) off 10 kΩ or higher
        5 (UL) - 8 (E) Unlocked Below 1 Ω
        5 (UL) - 8 (E) off 10 kΩ or higher

    NG

    REPLACE FRONT DOOR LOCK ASSEMBLY (for DRIVER SIDE) Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK - MAIN BODY ECU)


    1. A01NHBQE05
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Front Door Lock Assembly (for Driver Side))
      *2

      Front view of wire harness connector

      (to Main Body ECU (Multiplex Network Body ECU))
      *3 for LHD
      *4 for RHD

      Disconnect the main body ECU (multiplex network body ECU) connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      J8-9 (L) - F13-11 (L2) Always Below 1 Ω
      J8-10 (UL) - F13-24 (UL3) Always Below 1 Ω
      J8-7 (E) - Body ground Always Below 1 Ω
      F13-11 (L2) - Body ground Always 10 kΩ or higher
      F13-24 (UL3) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      I8-6 (L) - F13-11 (L2) Always Below 1 Ω
      I8-5 (UL) - F13-24 (UL3) Always Below 1 Ω
      I8-8 (E) - Body ground Always Below 1 Ω
      F13-11 (L2) - Body ground Always 10 kΩ or higher
      F13-24 (UL3) - 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