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

DESCRIPTION

If the power back door cannot be opened or closed using the combination switch assembly, there may be a malfunction in one of the following: 1) combination switch assembly circuit, 2) multiplex network door ECU or 3) main body ECU (multiplex network body ECU).

WIRING DIAGRAM

B005PW1E03
*a Power Back Door Switch (Integration Control and Panel Assembly)
*b Main Body ECU (Multiplex Network Body ECU)
*c Multiplex Network Door ECU
*d CAN Communication Line

CAUTION / NOTICE / HINT

Note


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

    Click here

  • If the multiplex network door ECU has been removed and installed or replaced, or if any of the connectors has been disconnected, initialize the power back door system.

    Click here

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

  • As the door control battery is installed between the vehicle battery and main body ECU (multiplex network body ECU), inspect the main body ECU (multiplex network body ECU) power source circuit for malfunctions before performing this troubleshooting procedure.*

    Click here


    • *: w/o Canister Pump Module with Door Ajar Warning Function

PROCEDURE


  1. READ VALUE USING GTS (Back Door Open SW)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

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

    5. Read the Data List according to the display on the GTS.


      Body Electrical > Main Body > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Back Door Open SW Combination switch assembly signal OFF or ON

      OFF: Combination switch assembly not pressed

      ON: Combination switch assembly pressed

      		 -

      Body Electrical > Main Body > Data List
      Tester Display
      Back Door Open SW
      OK
      On the GTS screen, ON or OFF is displayed accordingly.
      Result
      Proceed to
      OK
      NG

    NG

    INSPECT POWER BACK DOOR SWITCH (INTEGRATION CONTROL AND PANEL ASSEMBLY) Click here

    OK

  2. REPLACE MULTIPLEX NETWORK DOOR ECU


    1. Replace the multiplex network door ECU with a new or known good one.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  3. INITIALIZE MULTIPLEX NETWORK DOOR ECU


    1. Initialize the multiplex network door ECU.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  4. CHECK POWER BACK DOOR SYSTEM


    1. Check the power back door system operation.

      Click here

      OK
      Power back door system operates normally
      Result
      Proceed to
      OK
      NG

    OK

    END (MULTIPLEX NETWORK DOOR ECU WAS MALFUNCTIONING)

    NG

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

  5. INSPECT POWER BACK DOOR SWITCH (INTEGRATION CONTROL AND PANEL ASSEMBLY)


    1. Remove the power back door switch (integration control and panel assembly).

      Click here

    2. Inspect the power back door switch (integration control and panel assembly).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE POWER BACK DOOR SWITCH (INTEGRATION CONTROL AND PANEL ASSEMBLY) Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (INTEGRATION CONTROL AND PANEL ASSEMBLY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND)


    1. Disconnect the J83 power back door switch (integration control and panel assembly) connector.

    2. Disconnect the J9 main body ECU (multiplex network body ECU) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J83-4 (B) - J9-5 (PBDS) Always Below 1 Ω
      J83-14 (L) - Body ground Always Below 1 Ω
      J83-4 (B) or J9-5 (PBDS) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR