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

DESCRIPTION

The main body ECU (multiplex network body ECU) receives switch signals from the multiplex network master switch assembly (door control switch), and driver door key cylinder and passenger door key cylinder switch signals from the front door lock assembly LH*1 or RH*2.


The main body ECU (multiplex network body ECU) activates the door lock motor on each door according to these signals.

WIRING DIAGRAM

A01FTV0E02

INSPECTION PROCEDURE

Note


  • When using the GTS with the power switch off to troubleshoot:

    Connect the GTS to the DLC3 and turn a courtesy light switch on and off at 1.5-seconds intervals until communication between the GTS and vehicle begins.

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

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

Tech Tips

Since the power door lock control system has functions that use LIN communication system and CAN communication system, first confirm that there is no malfunction in the communication system by inspecting the LIN communication and CAN communication functions in accordance with the "How to Proceed with Troubleshooting" procedures. Then, conduct the following 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 assembly (door control switch) A
      All doors cannot be locked through door key cylinder B

    B

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

    A

  2. REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY


    1. Temporally replace the multiplex network master switch assembly (door control switch) with a new or normally functioning one Click here.


    NEXT

  3. CHECK POWER DOOR LOCK OPERATION


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

      OK
      All doors can be locked and unlocked with the multiplex network master switch assembly (door control switch).

    NG

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

    OK

    END (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY IS DEFECTIVE)

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


    1. Use the Data List to check if the door key-linked switches is functioning properly Click here.

      Front Left Door (for LHD)
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Door Key SW-Lock Driver door key-linked lock/unlock switch lock signal/ON or OFF

      ON: Driver door key cylinder turned to lock position

      OFF: Driver door key cylinder not turned to lock position

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

      ON: Driver door key cylinder turned to unlock position

      OFF: Driver door key cylinder not turned to unlock position

      		 -
      Front Right Door (for RHD)
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Door Key SW-Lock Driver door key-linked lock/unlock switch lock signal/ON or OFF

      ON: Driver door key cylinder turned to lock position

      OFF: Driver door key cylinder not turned to lock position

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

      ON: Driver door key cylinder turned to unlock position

      OFF: Driver door key cylinder not turned to unlock position

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

    NG

    INSPECT FRONT DOOR LOCK ASSEMBLY (for Driver Side) Click here

    OK

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

  5. INSPECT FRONT DOOR LOCK ASSEMBLY (for Driver Side)


    1. Remove the front door lock assembly (for Driver Side) Click here.

    2. Inspect the front door lock assembly (for Driver Side) Click here.


    NG

    REPLACE FRONT DOOR LOCK ASSEMBLY (for Driver Side) Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK ASSEMBLY - FRONT MULTIPLEX NETWORK DOOR ECU)


    • *1: for LHD

    • *2: for RHD


    1. Disconnect the Q22*1 or Q7*2 front door lock assembly (for Driver Side) connector.

    2. Disconnect Q18*1 or Q3*2 front multiplex network door ECU (for Driver Side) connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      Q22-9 (L) - Q18-16 (KL) Always Below 1 Ω
      Q22-10 (UL) - Q18-24 (KUL) Always Below 1 Ω
      Q22-7 (E) - Q18-22 (LSWE) Always Below 1 Ω
      Q22-9 (L) or Q18-16 (KL) - Body ground Always 10 kΩ or higher
      Q22-10 (UL) or Q18-24 (KUL) - Body ground Always 10 kΩ or higher
      Q22-7 (E) or Q18-22 (LSWE) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      Q7-6 (L) - Q3-16 (KL) Always Below 1 Ω
      Q7-5 (UL) - Q3-24 (KUL) Always Below 1 Ω
      Q7-8 (E) - Q3-22 (LSWE) Always Below 1 Ω
      Q7-6 (L) or Q3-16 (KL) - Body ground Always 10 kΩ or higher
      Q7-5 (UL) or Q3-24 (KUL) - Body ground Always 10 kΩ or higher
      Q7-8 (E) or Q3-22 (LSWE) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK HARNESS AND CONNECTOR (FRONT MULTIPLEX NETWORK DOOR ECU - BATTERY AND BODY GROUND)


    1. A01FU4IE03
      Text in Illustration
      *A for LHD
      *B for RHD
      *a

      Rear view of wire harness connector

      (to Front Multiplex Network Door ECU LH)

      Disconnect the front multiplex network door ECU (for Driver Side) connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      Q19-1 (GND) - Body ground Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      Q4-1 (GND) - Body ground Always Below 1 Ω

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

      Standard Voltage
      for LHD
      Tester Connection Condition Specified Condition
      Q19-4 (CPUB) - Body ground Always 11 to 14 V
      Q19-5 (BDR) - Body ground Always 11 to 14 V
      for RHD
      Tester Connection Condition Specified Condition
      Q4-4 (CPUB) - Body ground Always 11 to 14 V
      Q4-5 (BDR) - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE FRONT MULTIPLEX NETWORK DOOR ECU (for Driver Side) Click here