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

WIRING DIAGRAM

A01XAFTE02

CAUTION / NOTICE / HINT

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Tech Tips

Since the power door lock control system has functions that use LIN communication, first confirm that there is no malfunction in the communication system by inspecting the LIN communication functions in accordance with the "How to Proceed with Troubleshooting" procedures. Then, conduct the following inspection procedure.

PROCEDURE


  1. CHECK DOOR LOCK OPERATION

    Result
    Result Proceed to
    All doors cannot be locked through multiplex network master switch (for Models with Jam Protection Function on Driver Door Window Only) A
    All doors cannot be locked through multiplex network master switch (for Models with Jam Protection Function on 4 Windows) B
    All doors cannot be locked through driver side door key cylinder C

    B

    READ VALUE USING GTS (Door Lock Switch Status, Door Unlock Switch Status) Click here

    C

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

    A

  2. CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH - MAIN BODY ECU AND BODY GROUND)


    1. for LHD:


      1. Disconnect the I31 master switch connector.

      2. Disconnect the 2J main body ECU connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        I31-9 (UL) - 2J-21 Always Below 1 Ω
        I31-2 (L) - 2J-26 Always Below 1 Ω
        I31-1 (E) - Body ground Always Below 1 Ω
        I31-9 (UL) - Body ground Always 10 kΩ or higher
        I31-2 (L) - Body ground Always 10 kΩ or higher

    2. for RHD:


      1. Disconnect the I26 master switch connector.

      2. Disconnect the 2J main body ECU connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        I26-8 (UL) - 2J-21 Always Below 1 Ω
        I26-2 (L) - 2J-26) Always Below 1 Ω
        I26-9 (E) - Body ground Always Below 1 Ω
        I26-8 (UL) - Body ground Always 10 kΩ or higher
        I26-2 (L) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT COWL SIDE JUNCTION BLOCK LH


    1. Remove the cowl side junction block LH.


    2. Remove the main body ECU from the cowl side junction block LH.

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

      A01X5Q3E02
      Text in Illustration
      *a

      Component without harness connected

      (Cowl Side Junction Block LH)

      		 - -
      Standard Resistance
      Tester Connection Condition Specified Condition
      2J-26 - A-20 (L1) Always Below 1 Ω
      2J-21 - A-22 (UL1) Always Below 1 Ω
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE COWL SIDE JUNCTION BLOCK LH (for LHD) Click here

    C

    REPLACE COWL SIDE JUNCTION BLOCK LH (for RHD) Click here

    A

  4. CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY (OPERATION)


    1. Replace the multiplex network master switch with a normally functioning one Click here.

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

      OK
      All doors can be locked and unlocked with multiplex network master switch.
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    A

    END (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY IS DEFECTIVE)

    B

    REPLACE COWL SIDE JUNCTION BLOCK LH (for LHD) Click here

    C

    REPLACE COWL SIDE JUNCTION BLOCK LH (for RHD) Click here

  5. READ VALUE USING GTS (Door Lock Switch Status, Door Unlock Switch Status)


    1. Use the Data List to check if the door lock switch and unlock switches are functioning properly.

      Main Body ECU
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Door Lock Switch Status Multiplex network master switch assembly lock signal / ON or OFF

      OFF: Lock side of multiplex network master switch assembly not pushed

      ON: Lock side of multiplex network master switch assembly pushed

      		 -
      Door Unlock Switch Status Multiplex network master switch assembly unlock signal / ON or OFF

      OFF: Unlock side of multiplex network master switch assembly not pushed

      ON: Unlock side of multiplex network master switch assembly pushed

      		 -
      OK
      On the GTS screen, ON or OFF is displayed for each item according to the table above.
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    A

    REPLACE COWL SIDE JUNCTION BLOCK LH (for LHD) Click here

    B

    REPLACE COWL SIDE JUNCTION BLOCK LH (for RHD) Click here

    C

  6. REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY


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


    NEXT

  7. CHECK DOOR LOCK OPERATION


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

      OK
      All doors can be locked and unlocked by the multiplex network master switch assembly.
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    A

    END (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY IS DEFECTIVE)

    B

    REPLACE COWL SIDE JUNCTION BLOCK LH (for LHD) Click here

    C

    REPLACE COWL SIDE JUNCTION BLOCK LH (for RHD) Click here

  8. READ VALUE USING GTS (DOOR KEY LINKED LOCK AND UNLOCK SWITCH)


    1. Use the Data List to check if the door key linked lock and unlock switches are functioning properly.

      Main Body ECU
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Door Key Linked Lock SW Door key linked lock switch signal / ON or OFF

      ON: Driver side door key cylinder turned to lock position

      OFF: Driver side door key cylinder not turned

      		 -
      Door Key Linked Unlock SW Door key linked unlock switch signal / ON or OFF

      ON: Driver side door key cylinder turned to unlock position

      OFF: Driver side door key cylinder not turned

      		 -
      OK
      On tester screen, each item changes between ON and OFF according to above chart.
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD)) B
      NG C

    A

    REPLACE COWL SIDE JUNCTION BLOCK LH (for LHD) Click here

    B

    REPLACE COWL SIDE JUNCTION BLOCK LH (for RHD) Click here

    C

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


    1. for LHD (w/o Double Locking Function):


      1. Remove the front door lock LH Click here.

      2. Inspect the front door lock LH Click here.

    2. for LHD (w/ Double Locking Function):


      1. Remove the front door lock LH Click here.

      2. Inspect the front door lock LH Click here.

    3. for RHD (w/o Double Locking Function):


      1. Remove the front door lock RH Click here.

      2. Inspect the front door lock RH Click here.

    4. for RHD (w/ Double Locking Function):


      1. Remove the front door lock LH Click here.

      2. Inspect the front door lock LH Click here.


    NG

    REPLACE FRONT DOOR LOCK ASSEMBLY Click here

    OK

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


    1. for LHD:


      1. Disconnect the I14 door lock connector.

      2. Disconnect the E118 main body ECU connectors.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        I14-10 (UL) - E118-2 (UL3) Always Below 1 Ω
        I14-9 (L) - E118-29 (L2) Always Below 1 Ω
        I14-7 (E) - Body ground Always Below 1 Ω
        I14-10 (UL) - Body ground Always 10 kΩ or higher
        I14-9 (L) - Body ground Always 10 kΩ or higher

    2. for RHD:


      1. Disconnect the I6 door lock connector.

      2. Disconnect the E118 main body ECU connectors.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        I6-5 (UL) - E118-2 (UL3) Always Below 1 Ω
        I6-6 (L) - E118-29 (L2) Always Below 1 Ω
        I6-8 (E) - Body ground Always Below 1 Ω
        I6-5 (UL) - Body ground Always 10 kΩ or higher
        I6-6 (L) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD)) B
      NG C

    A

    REPLACE COWL SIDE JUNCTION BLOCK LH (for LHD) Click here

    B

    REPLACE COWL SIDE JUNCTION BLOCK LH (for RHD) Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR