BACK DOOR CLOSER SYSTEM Back Door Closer does not Operate

DESCRIPTION

If the back door closer system does not operate, one of the following may be the cause: 1) improper fit of the back door or a foreign object stuck in the back door, 2) a malfunction in the multiplex network door ECU power source circuit, 3) a malfunction in the back door lock assembly circuit, 4) initialization of the multiplex network door ECU has not been performed or 5) a multiplex network door ECU malfunction.

WIRING DIAGRAM

B005LUGE32

CAUTION / NOTICE / HINT

Note


  • Inspect the fuses for circuits related to this system before performing the following procedure.

  • 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. CHECK FOR DTC


    1. Check for DTCs.

      Click here


      Body Electrical > Back Door > Trouble Codes
      Result
      Result Proceed to
      DTCs are not output A
      DTC B2250 is output B
      DTC B2251 is output C

    B

    GO TO DTC B2250 Click here

    C

    GO TO DTC B2251 Click here

    A

  2. CHECK BACK DOOR LOCK FUNCTION


    1. Check if the back door can be fully closed by hand.

      Result
      Result Proceed to
      The back door can be closed normally A
      The back door cannot be closed normally B

    B

    IMPROPER FIT OF BACK DOOR, OR A FOREIGN OBJECT IS STUCK IN BACK DOOR

    A

  3. INITIALIZE MULTIPLEX NETWORK DOOR ECU


    1. Perform the initialization of the multiplex network door ECU.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  4. CHECK BACK DOOR CLOSER SYSTEM


    1. Check the back door closer system operation.

      Click here

      Result
      Result Proceed to
      The back door closer system operates normally A
      The back door closer system operates not normally B

    A

    END (BACK DOOR CLOSER SYSTEM HAS NOT BEEN INITIALIZED)

    B

  5. CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK DOOR ECU -BATTERY AND BODY GROUND)


    1. B005NGVC05
      *a

      Rear view of wire harness connector

      (to Multiplex Network Door ECU)

      Disconnect the Z16 and Z17 multiplex network door ECU connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Z17-10 (GND) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      Z16-20 (ECUB) - Body ground Always 11 to 14 V
      Z17-1 (B) - Body ground Always 11 to 14 V
      Z16-18 (IG) - Body ground Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT BACK DOOR LOCK ASSEMBLY


    1. Remove the back door lock assembly.

      Click here

    2. Inspect the back door lock assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE BACK DOOR LOCK ASSEMBLY Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK ASSEMBLY - MULTIPLEX NETWORK DOOR ECU AND BODY GROUND)


    1. Disconnect the Z7 back door lock assembly connector.

    2. Disconnect the Z16 and Z17 multiplex network door ECU connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Z7-4 (M+) - Z17-4 (DC+) Always Below 1 Ω
      Z7-1 (M-) - Z17-3 (DC-) Always Below 1 Ω
      Z7-8 (CTY) - Z16-11 (FUL) Always Below 1 Ω
      Z7-2 (FSW) - Z16-13 (PAWL) Always Below 1 Ω
      Z7-3 (CLS) - Z16-9 (HAF) Always Below 1 Ω
      Z7-6 (OPN) - Z16-7 (POS) Always Below 1 Ω
      Z7-7 (E) - Body ground Always Below 1 Ω
      Z7-4 (M+) or Z17-4 (DC+) - Body ground Always 10 kΩ or higher
      Z7-1 (M-) or Z17-3 (DC-) - Body ground Always 10 kΩ or higher
      Z7-2 (FSW) or Z16-13 (PAWL) - Body ground Always 10 kΩ or higher
      Z7-8 (CTY) or Z16-11 (FUL) - Body ground Always 10 kΩ or higher
      Z7-3 (CLS) or Z16-9 (HAF) - Body ground Always 10 kΩ or higher
      Z7-6 (OPN) or Z16-7 (POS) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MULTIPLEX NETWORK DOOR ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR