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

DESCRIPTION

The main body ECU receives switch signals from the door control switch and activates the door lock motor on each door according to these signals.

WIRING DIAGRAM

A01GXJUE04
A01GXJUE05

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (DOOR LOCK AND UNLOCK SWITCH)


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

      Passenger Door (Front door ECU RH*1) (Front door ECU LH*2)
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Door Lock SW Door manual lock switch signal/ON or OFF

      ON: Front passenger side door control switch is ON (LOCK)

      OFF: Front passenger side door control switch is OFF

      		 -
      Door Unlock SW Door manual unlock switch signal/ON or OFF

      ON: Front passenger side door control switch is ON (UNLOCK)

      OFF: Front passenger side door control switch is OFF

      		 -

      Tech Tips

      *1: for LHD

      *2: for RHD

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

    NG

    INSPECT DOOR CONTROL SWITCH ASSEMBLY (DOOR LOCK AND UNLOCK SWITCH) Click here

    OK

  2. CHECK FRONT DOOR ECU (OPERATION) (for Front Passenger Side)


    1. Replace the front door ECU (for passenger side) with a normally functioning one Click here.

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

      OK
      All doors can be locked and unlocked with door control switch.

    NG

    REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK)

    OK

    END (FRONT DOOR ECU IS DEFECTIVE) (for Front Passenger Side)

  3. INSPECT DOOR CONTROL SWITCH ASSEMBLY (DOOR LOCK AND UNLOCK SWITCH)

    A01GXCHE05

    1. Remove the door control switch Click here.

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

      Standard resistance
      Tester Connection Switch Condition Specified Condition
      2 (L) - 3 (E) Lock Below 1 Ω
      4 (UL) - 3 (E) Unlock Below 1 Ω
      2 (L) - 3 (E) Unlock 10 kΩ or higher
      4 (UL) - 3 (E) Lock 10 kΩ or higher

    NG

    REPLACE DOOR CONTROL SWITCH ASSEMBLY Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (FRONT DOOR ECU - DOOR CONTROL SWITCH)

    A01H239E04

    1. Disconnect the P4 or P10 ECU connector.

    2. Disconnect the N5 or N16 switch connector.

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

      Standard resistance
      for LHD
      Tester Connection Condition Specified Condition
      P4-11 (PML) - N5-2 (L) Always Below 1 Ω
      P4-20 (DLE) - N5-3 (E) Always Below 1 Ω
      P4-12 (PMUL) - N5-4 (UL) Always Below 1 Ω
      N5-2 (L) - Body ground Always 10 kΩ or higher
      N5-3 (E) - Body ground Always 10 kΩ or higher
      N5-4 (UL) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      P10-11 (PML) - N16-2 (L) Always Below 1 Ω
      P10-20 (DLE) - N16-3 (E) Always Below 1 Ω
      P10-12 (PMUL) - N16-4 (UL) Always Below 1 Ω
      N16-2 (L) - Body ground Always 10 kΩ or higher
      N16-3 (E) - Body ground Always 10 kΩ or higher
      N16-4 (UL) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE FRONT DOOR ECU (for Front Passenger Side) Click here