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 (instrument panel junction block assembly) receives switch signals from the master switch, and front door lock key cylinder switch signals from the front door lock. The main body ECU (instrument panel junction block assembly) activates the door lock motor on each door according to these signals.

WIRING DIAGRAM

A01IRUAE04

INSPECTION PROCEDURE

Note

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

PROCEDURE


  1. CHECK DOOR LOCK OPERATION


    1. Check the door lock operation.

      Result
      Result Proceed to
      No doors can be locked with master switch or front door lock key cylinder A
      No doors can be locked with master switch B
      No doors can be locked with front door lock key cylinder C

    B

    CHECK POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY (OPERATION) Click here

    C

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

    A

  2. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY AND BODY GROUND)


    1. Disconnect the DE, DG, H79 and H80 ECU connectors.

      A01IRVNE02

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      DG-1 (ALTB) - Body ground Always 11 to 14 V
      H79-4 (BATB) - Body ground Always 11 to 14 V
      Standard Resistance
      Tester Connection Condition Specified Condition
      DE-28 (GND1) - Body ground Always Below 1 Ω
      H80-4 (GND2) - Body ground Always Below 1 Ω
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Main Body ECU)

      		 - -

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

  3. CHECK POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY (OPERATION)


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

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

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

    NG

    REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

    OK

    END (POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY IS DEFECTIVE)

  4. READ VALUE USING INTELLIGENT TESTER (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 Click here.

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

      ON: Front door lock key cylinder turned to lock position

      OFF: Front door lock key cylinder not turned

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

      ON: Front door lock key cylinder turned to unlock position

      OFF: Front door lock key cylinder not turned

      		 -
      OK
      On tester screen, each item changes between ON and OFF according to above chart.

    NG

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

    OK

    REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

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


    1. for LHD:

      A01ISXNE13

      1. Remove the front door lock 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) Lock Below 1 Ω
        9 (L) - 7 (E) Off 10 kΩ or higher
        10 (UL) - 7 (E) Unlock Below 1 Ω
        10 (UL) - 7 (E) Off 10 kΩ or higher

    2. for RHD:

      A01ISCGE01

      1. Remove the front door lock RH Click here.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        5 (UL) - 8 (E) Unlock Below 1 Ω
        5 (UL) - 8 (E) Off 10 kΩ or higher
        6 (L) - 8 (E) Lock Below 1 Ω
        6 (L) - 8 (E) Off 10 kΩ or higher

    NG

    REPLACE FRONT DOOR LOCK ASSEMBLY Click here

    OK

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


    1. A01ITR3E03
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Main Body ECU)
      *2

      Component without harness connected

      (to Front Door Lock)

      for LHD:


      1. Disconnect the K9 door lock connector.

      2. Disconnect the DH ECU connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        K9-10 (UL) - DH-6 (UL2) Always Below 1 Ω
        K9-9 (L) - DH-7 (L2) Always Below 1 Ω
        K9-7 (E) - Body ground Always Below 1 Ω
        K9-10 (UL) - Body ground Always 10 kΩ or higher
        K9-9 (L) - Body ground Always 10 kΩ or higher
    2. A01ITR3E04
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Main Body ECU)
      *2

      Component without harness connected

      (to Front Door Lock)

      for RHD:


      1. Disconnect the J7 door lock connector.

      2. Disconnect the DH ECU connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        J7-5 (UL) - DH-6 (UL2) Always Below 1 Ω
        J7-6 (L) - DH-7 (L2) Always Below 1 Ω
        J7-8 (E) - Body ground Always Below 1 Ω
        J7-5 (UL) - Body ground Always 10 kΩ or higher
        J7-6 (L) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)