POWER DOOR LOCK CONTROL SYSTEM Only Back Door LOCK / UNLOCK Functions do not Operate

DESCRIPTION


WIRING DIAGRAM

A017DULE02

INSPECTION PROCEDURE

PROCEDURE


  1. SYSTEM CHECK


    1. Check if the vehicle is equipped with a back door closer system.

      Result
      Result Proceed to
      w/ Back Door Closer System A
      w/o Back Door Closer System B

    A

    GO TO BACK DOOR CLOSER SYSTEM (Back Door cannot be Opened) Click here

    B

  2. READ VALUE USING INTELLIGENT TESTER (BACK DOOR OPENER SWITCH)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch on (IG).

    3. Turn the tester on.

    4. Select Back Door Open Handle in the Data List and read the tester display.

      Main Body (Main Body ECU):
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Back Door Open Handle Back door opener switch/ON or OFF

      ON: Back door opener switch is pushed

      OFF: Back door opener switch is not pushed

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

    NG

    INSPECT BACK DOOR OPENER SWITCH Click here

    OK

  3. INSPECT BACK DOOR LOCK ASSEMBLY


    1. A017EJAE07

      Remove the back door lock assembly Click here.

    2. Check operation of the door lock motor.


      1. Move the door lock to the lock position.

      2. Apply battery voltage to the door lock motor and check the operation of the door lock motor.

        OK
        Measurement Condition Specified Condition

        Battery positive (+) → Terminal 2

        Battery negative (-) → Terminal 1

        		 Unlocked

    3. Check operation of the door courtesy switch.


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

        Standard resistance
        Tester Connection Switch Condition Specified Condition
        1 - 3 Locked 10 kΩ or higher
        1 - 3 Unlocked Below 1 Ω

    NG

    REPLACE BACK DOOR LOCK ASSEMBLY Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK CIRCUIT)


    1. Disconnect the main body ECU (instrument panel junction block) connector.

      A017BPZE01

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

      Standard resistance
      Tester Connection Condition Specified Condition
      T3-2 (ACT+) - D7-1 (TR+) Always Below 1 Ω
      T3-2 (ACT+) - Body ground Always 10 kΩ or higher
      T3-3 (D+) - D6-25 (BCTY) Always Below 1 Ω
      T3-3 (D+) - Body ground Always 10 kΩ or higher
      T3-1 (ACT-) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)

  5. INSPECT BACK DOOR OPENER SWITCH


    1. Remove the back door opener switch Click here.

      A017BTUE04

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

      Standard resistance
      Tester Connection Switch Position Specified Condition
      2 - 3 Back door opener switch not pushed (OFF) 10 kΩ or higher
      2 - 3 Back door opener switch pushed (ON) Below 1 Ω

    NG

    REPLACE BACK DOOR OPENER SWITCH Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (BACK DOOR OPENER SWITCH CIRCUIT)


    1. A017GBRE02

      Disconnect the main body ECU (instrument panel junction block) connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      h1-3 (B) - D7-26 (BDSU) Always Below 1 Ω
      h1-3 (B) - Body ground Always 10 kΩ or higher
      h1-2 (L) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)