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 (driver side junction block assembly) receives switch signals from the door control switches and driver door key cylinder, and activates the door lock motor on each door according to these signals.

WIRING DIAGRAM

A01EMRME01

INSPECTION PROCEDURE

Note


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

  • The power door lock control system uses a LIN communication system. Inspect the communication function by following How to Proceed with Troubleshooting Click here. Troubleshoot the power door lock control system after confirming that the communication system is functioning properly.

PROCEDURE


  1. CHECK DOOR LOCK OPERATION (ALL DOORS LOCK / UNLOCK)


    1. All doors can be locked/unlocked at the same time using the following:


      • Door control switch on the driver side (switch operation)

      • Door key cylinder linked with door lock on the driver side (key operation)

    2. Proceed to the next step according to symptom if all doors cannot be locked/unlocked at the same time.

      Result
      Result Proceed to
      All doors cannot be locked/unlocked at the same time by using door control switch. A
      All doors cannot be locked/unlocked at the same time by using driver door key cylinder. B

    B

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

    A

  2. READ VALUE USING GTS (DOOR CONTROL SWITCH (DRIVER SIDE))


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

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

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

      Master Switch (Power Window Regulator Master Switch Assembly)
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Door Lock Switch Status Driver side door control switch lock signal/ON or OFF

      ON: Driver side door control switch pushed to lock position

      OFF: Driver side door control switch not pushed to lock position

      		 -
      Door Unlock Switch Status Driver side door control switch unlock signal/ON or OFF

      ON: Driver side door control switch pushed to unlock position

      OFF: Driver side door control switch not pushed to unlock position

      		 -
      OK
      The GTS indicates ON or OFF according to the switch operation as shown in the table.

    NG

    REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY Click here

    OK

    REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) Click here

  3. READ VALUE USING GTS (DOOR KEY LINKED LOCK AND UNLOCK SWITCH (DRIVER SIDE))


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    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.

      Main Body (Main Body ECU (Driver Side Junction Block Assembly))
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Door Key SW-Lock Driver door key linked lock switch signal/ON or OFF

      ON: Driver door key cylinder turned to lock position

      OFF: Driver door key cylinder not turned

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

      ON: Driver door key cylinder turned to unlock position

      OFF: Driver door key cylinder not turned

      		 -
      OK
      The GTS indicates ON or OFF according to the switch operation as shown in the table.

    NG

    INSPECT FRONT DOOR LOCK ASSEMBLY LH Click here

    OK

    REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) Click here

  4. INSPECT FRONT DOOR LOCK ASSEMBLY LH


    1. A01EIPUE17
      Text in Illustration
      *1

      Component without harness connected

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

      Remove the front door lock assembly LH Click here.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      9 (L) - 7 (E) Locked Below 1 Ω

      9 (L) - 7 (E)

      10 (UL) - 7 (E)

      		 Free 10 kΩ or higher
      10 (UL) - 7 (E) Unlocked Below 1 Ω

    NG

    REPLACE FRONT DOOR LOCK ASSEMBLY (DRIVER SIDE) Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK - MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK))


    1. Disconnect the 2K driver side junction block connector.

      A01EIVHE01
      Text in Illustration
      *1

      Front view of wire harness connected

      (to Front Door Lock Assembly LH)

      		 *2

      Front view of wire harness Connected

      (to Main Body ECU (Driver Side Junction Block Assembly))

    2. Disconnect the D50 main body ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I7-9 (L) - 2K-26 (L2) Always Below 1 Ω
      I7-10 (UL) - D50-10 (UL3) Always Below 1 Ω
      I7-7 (E) - Body ground Always Below 1 Ω
      I7-9 (L) - Body ground Always 10 kΩ or higher
      I7-10 (UL) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) Click here