POWER BACK DOOR SYSTEM Power Back Door cannot be Opened or Closed Using the Power Back Door Switch

DESCRIPTION

When the power back door cannot be opened or closed using the power back door control switch, one of the following may be malfunctioning: 1) power back door control switch circuit, 2) back door motor unit (power back door ECU) or 3) main body ECU.

WIRING DIAGRAM

A01CCCYE10

INSPECTION PROCEDURE

CAUTION:

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

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (POWER BACK DOOR CONTROL SWITCH)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the tester on.

    4. Enter the following menus: Body / Main Body / Data List.

    5. Check the Data List to determine if the power back door control switch function properly.

      Main Body (Main Body ECU)
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Back Door Open SW Power back door control switch / ON or OFF

      ON: Power back door control switch pushed

      OFF: Power back door control switch not pushed

      		 -
      OK
      The power back door control switch functions as specified in the normal condition column.

    NG

    INSPECT POWER BACK DOOR CONTROL SWITCH Click here

    OK

  2. REPLACE BACK DOOR MOTOR UNIT (POWER BACK DOOR ECU)


    1. Replace the back door motor unit (power back door ECU) Click here.


    NEXT

  3. CHECK POWER BACK DOOR OPERATION


    1. Check that the power back door operates normally Click here.

      OK
      Power back door operates normally.

    NG

    REPLACE MAIN BODY ECU Click here

    OK

    END (BACK DOOR MOTOR UNIT (POWER BACK DOOR ECU) IS DEFECTIVE)

  4. INSPECT POWER BACK DOOR CONTROL SWITCH


    1. A01CD6WE01

      Remove the power back 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
      6 (CSW) - 7 (E) Free (OFF) 10 kΩ or higher
      6 (CSW) - 7 (E) Pushed (ON) Below 1 Ω

    NG

    REPLACE POWER BACK DOOR CONTROL SWITCH Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (POWER BACK DOOR CONTROL SWITCH - MAIN BODY ECU)


    1. A01CG26E02

      Disconnect the G49 ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      R14-6 (CSW) - G49-2 (PBDS) Always Below 1 Ω
      R14-7 (E) - Body ground Always Below 1 Ω
      R14-6 (CSW) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MAIN BODY ECU Click here