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) power back door ECU (power back door motor unit) or 3) main body ECU (driver side junction block assembly).

WIRING DIAGRAM

A01EKIVE11

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 GTS (POWER BACK DOOR CONTROL SWITCH)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch to on (IG).

    3. Turn the GTS on.

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

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

      Main Body (Main Body ECU (Driver Side Junction Block Assembly))
      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 POWER BACK DOOR ECU (POWER BACK DOOR MOTOR UNIT)


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


    NEXT

  3. INITIALIZE POWER BACK DOOR ECU


    1. Perform the initialization for the power back door ECU (power back door motor unit) Click here.


    NEXT

  4. 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 (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) Click here

    OK

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

  5. INSPECT POWER BACK DOOR CONTROL SWITCH


    1. A01EK1NE03

      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 Position Specified Condition
      1 (E) - 4 (CSW) Power back door control switch not pushed (off) 10 kΩ or higher
      1 (E) - 4 (CSW) Power back door control switch pushed (on) Below 1 Ω

    NG

    REPLACE POWER BACK DOOR CONTROL SWITCH Click here

    OK

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


    1. A01EL59E01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Power Back Door Control Switch)
      *2

      Front view of wire harness connector

      (to Main Body ECU)

      Disconnect the D10 power back door control switch and D50 main body ECU connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D10-4 (CSW) - D50-26 (PBDS) Always Below 1 Ω
      D10-1 (E) - Body ground Always Below 1 Ω
      D10-4 (CSW) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) Click here