POWER DOOR LOCK CONTROL SYSTEM All Doors LOCK/UNLOCK Functions do not Operate Via Door Key Cylinder

DESCRIPTION

The main body ECU (multiplex network body ECU) receives door key cylinder lock or unlock switch signals from the front door with motor lock assembly LH/RH. The main body ECU (multiplex network body ECU) activates the door lock motor on each door according to these signals.

WIRING DIAGRAM

B000PALE03
B000PALE04

CAUTION / NOTICE / HINT

Note

If the main body ECU (multiplex network body ECU) is replaced, refer to the Service Bulletin.

PROCEDURE


  1. CHECK PROBLEM SYMPTOM


    1. Check the problem symptom.

      Click here

      Result
      Result Proceed to
      Key-linked lock/unlock function does not operate by driver door key cylinder A
      Key-linked lock/unlock function does not operate by front passenger door key cylinder B

    B

    READ VALUE USING GTS (Door Key SW-Lock, Door Key SW-Unlock) Click here

    A

  2. READ VALUE USING GTS (Door Key SW-Lock, D Door Key SW-UL)


    1. Connect the GTS to the DLC3.

    2. Turn the power 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
      Door Key SW-Lock Driver door key-linked switch lock signal OFF or ON

      OFF: Driver and front passenger door key cylinder not turned to lock position

      ON: Driver door key cylinder turned to lock position

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

      OFF: Driver door key cylinder not turned to unlock position

      ON: Driver door key cylinder turned to unlock position

      		 -

      Body Electrical > Main Body > Data List
      Tester Display
      Door Key SW-Lock
      D Door Key SW-UL
      OK
      On the GTS screen, ON or OFF is displayed for each item according to the table above.
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

  3. INSPECT FRONT DOOR WITH MOTOR LOCK ASSEMBLY (for Driver Door)


    1. Remove the front door with motor lock assembly (for Driver Door).

      Click here

    2. Inspect the front door with motor lock assembly (for Driver Door).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT DOOR WITH MOTOR LOCK ASSEMBLY (for Driver Door) Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (FRONT DOOR WITH MOTOR LOCK ASSEMBLY (for Driver Door) - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND)


    1. for LHD:


      1. Disconnect the S4 front door with motor lock assembly LH connector.

      2. Disconnect the R4 front door with motor lock assembly RH connector.

      3. Disconnect the P9 main body ECU (multiplex network body ECU) connector.

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

        Standard Resistance
        w/ Double Locking System
        Tester Connection Condition Specified Condition
        S4-7 (L) - P9-18 (L2) Always Below 1 Ω
        S4-8 (UL) - P9-17 (UL3) Always Below 1 Ω
        S4-9 (E) - Body ground Always Below 1 Ω
        S4-7 (L) or P9-18 (L2) - Other terminals and body ground Always 10 kΩ or higher
        S4-8 (UL) or P9-17 (UL3) - Other terminals and body ground Always 10 kΩ or higher
        Standard Resistance
        w/o Double Locking System
        Tester Connection Condition Specified Condition
        S4-9 (L) - P9-18 (L2) Always Below 1 Ω
        S4-10 (UL) - P9-17 (UL3) Always Below 1 Ω
        S4-7 (E) - Body ground Always Below 1 Ω
        S4-9 (L) or P9-18 (L2) - Other terminals and body ground Always 10 kΩ or higher
        S4-10 (UL) or P9-17 (UL3) - Other terminals and body ground Always 10 kΩ or higher

    2. for RHD:


      1. Disconnect the R4 front door with motor lock assembly RH connector.

      2. Disconnect the S4 front door with motor lock assembly LH connector.

      3. Disconnect the P9 main body ECU (multiplex network body ECU) connector.

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

        Standard Resistance
        w/ Double Locking System
        Tester Connection Condition Specified Condition
        R4-8 (L) - P9-18 (L2) Always Below 1 Ω
        R4-7 (UL) - P9-17 (UL3) Always Below 1 Ω
        R4-6 (E) - Body ground Always Below 1 Ω
        R4-8 (L) or P9-18 (L2) - Other terminals and body ground Always 10 kΩ or higher
        R4-7 (UL) or P9-17 (UL3) - Other terminals and body ground Always 10 kΩ or higher
        Standard Resistance
        w/o Double Locking System
        Tester Connection Condition Specified Condition
        R4-6 (L) - P9-18 (L2) Always Below 1 Ω
        R4-5 (UL) - P9-17 (UL3) Always Below 1 Ω
        R4-8 (E) - Body ground Always Below 1 Ω
        R4-6 (L) or P9-18 (L2) - Other terminals and body ground Always 10 kΩ or higher
        R4-5 (UL) or P9-17 (UL3) - Other terminals and body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. READ VALUE USING GTS (Door Key SW-Lock, Door Key SW-Unlock)


    1. Connect the GTS to the DLC3.

    2. Turn the power 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
      Door Key SW-Lock Front passenger door key-linked switch lock signal OFF or ON

      OFF: Driver and front passenger door key cylinder not turned to lock position

      ON: Front passenger door key cylinder turned to lock position

      		 -
      Door Key SW-Unlock Front passenger door key-linked switch unlock signal OFF or ON

      OFF: Front passenger door key cylinder not turned to unlock position

      ON: Front passenger door key cylinder turned to unlock position

      		 -

      Body Electrical > Main Body > Data List
      Tester Display
      Door Key SW-Lock
      Door Key SW-Unlock
      OK
      On the GTS screen, ON or OFF is displayed for each item according to the table above.
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

  6. INSPECT FRONT DOOR WITH MOTOR LOCK ASSEMBLY (for Front Passenger Door)


    1. Remove the front door with motor lock assembly (for Front Passenger Door).

      Click here

    2. Inspect the front door with motor lock assembly (for Front Passenger Door).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT DOOR WITH MOTOR LOCK ASSEMBLY (for Front Passenger Door) Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (FRONT DOOR WITH MOTOR LOCK ASSEMBLY (for Front Passenger Door) - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND)


    1. for LHD:


      1. Disconnect the R4 front door with motor lock assembly RH connector.

      2. Disconnect the S4 front door with motor lock assembly LH connector.

      3. Disconnect the P9 main body ECU (multiplex network body ECU) connector.

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

        Standard Resistance
        w/ Double Locking System
        Tester Connection Condition Specified Condition
        R4-8 (L) - P9-18 (L2) Always Below 1 Ω
        R4-7 (UL) - P9-19 (UL2) Always Below 1 Ω
        R4-6 (E) - Body ground Always Below 1 Ω
        R4-8 (L) or P9-18 (L2) - Other terminals and body ground Always 10 kΩ or higher
        R4-7 (UL) or P9-19 (UL2) - Other terminals and body ground Always 10 kΩ or higher
        Standard Resistance
        w/o Double Locking System
        Tester Connection Condition Specified Condition
        R4-6 (L) - P9-18 (L2) Always Below 1 Ω
        R4-5 (UL) - P9-19 (UL2) Always Below 1 Ω
        R4-8 (E) - Body ground Always Below 1 Ω
        R4-6 (L) or P9-18 (L2) - Other terminals and body ground Always 10 kΩ or higher
        R4-5 (UL) or P9-19 (UL2) - Other terminals and body ground Always 10 kΩ or higher

    2. for RHD:


      1. Disconnect the S4 front door with motor lock assembly LH connector.

      2. Disconnect the R4 front door with motor lock assembly RH connector.

      3. Disconnect the P9 main body ECU (multiplex network body ECU) connector.

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

        Standard Resistance
        w/ Double Locking System
        Tester Connection Condition Specified Condition
        S4-7 (L) - P9-18 (L2) Always Below 1 Ω
        S4-8 (UL) - P9-19 (UL2) Always Below 1 Ω
        S4-9 (E) - Body ground Always Below 1 Ω
        S4-7 (L) or P9-18 (L2) - Other terminals and body ground Always 10 kΩ or higher
        S4-8 (UL) or P9-19 (UL2) - Other terminals and body ground Always 10 kΩ or higher
        Standard Resistance
        w/o Double Locking System
        Tester Connection Condition Specified Condition
        S4-9 (L) - P9-18 (L2) Always Below 1 Ω
        S4-10 (UL) - P9-19 (UL2) Always Below 1 Ω
        S4-7 (E) - Body ground Always Below 1 Ω
        S4-9 (L) or P9-18 (L2) - Other terminals and body ground Always 10 kΩ or higher
        S4-10 (UL) or P9-19 (UL2) - Other terminals and body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR