BACK DOOR CLOSER SYSTEM Back Door Closer does not Operate

DESCRIPTION

When the back door closer does not operate, one of the following may be the cause: 1) improper fit of the back door, or a foreign object is stuck in the back door, 2) a malfunction in the back door motor unit*1 or multiplex network door ECU*2 power source circuit, 3) a malfunction in the back door lock assembly circuit, or 4) a malfunction in the back door motor unit*1 or multiplex network door ECU*2.


WIRING DIAGRAM


  1. w/ Power Back Door System

    B006MGOE13

  2. w/o Power Back Door System

    B006MGOE14

CAUTION / NOTICE / HINT

Note


  • First perform the communication function inspections in How to Proceed with Troubleshooting to confirm that there are no CAN communication malfunctions before troubleshooting this problem.

    Click here

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

  • If the replacement, removal and installation of the back door motor unit or disconnection of the connectors of the back door motor unit has been performed, initialize the power back door system.

    Click here

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

PROCEDURE


  1. CHECK FOR DTC


    1. Check for DTCs.

      Click here


      Body Electrical > Back Door > Trouble Codes
      Result
      Result Proceed to
      DTC is 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. CHECK BACK DOOR CLOSER SYSTEM


    1. Check back door closer operation.

      Click here

      Result
      Result Proceed to
      The back door closer operates not normally (when the back door is partially closed) (w/ Power Back Door System) A
      The back door closer operates not normally (when the back door is partially closed) (w/o Power Back Door System) B

    B

    CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK DOOR ECU - BATTERY AND BODY GROUND) Click here

    A

  4. CHECK HARNESS AND CONNECTOR (BACK DOOR MOTOR UNIT - BATTERY AND BODY GROUND)


    1. B006QPVC01
      *a

      Rear view of wire harness connector

      (to Back Door Motor Unit)

      Disconnect the back door motor unit connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K22-11 (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
      K22-10 (ECUB) - Body ground Always 11 to 14 V
      K22-12 (B) - Body ground Always 11 to 14 V
      K22-8 (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

  5. 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

  6. CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK ASSEMBLY - BACK DOOR MOTOR UNIT AND BODY GROUND)


    1. Disconnect the U9 back door lock assembly connector.

    2. Disconnect the K22 back door motor unit connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      U9-1 (M-) - K22-1 (DC-) Always Below 1 Ω
      U9-2 (POL) - K22-16 (PAWL) Always Below 1 Ω
      U9-3 (CLS) - K22-22 (HAF) Always Below 1 Ω
      U9-4 (M+) - K22-2 (DC+) Always Below 1 Ω
      U9-6 (OPN) - K22-24 (POS) Always Below 1 Ω
      U9-7 (E) - Body ground Always Below 1 Ω
      U9-8 (CTY) - K22-20 (FUL) Always Below 1 Ω
      U9-1 (M-) or K22-1 (DC-) - Body ground Always 10 kΩ or higher
      U9-2 (POL) or K22-16 (PAWL) - Body ground Always 10 kΩ or higher
      U9-3 (CLS) or K22-22 (HAF) - Body ground Always 10 kΩ or higher
      U9-4 (M+) or K22-2 (DC+) - Body ground Always 10 kΩ or higher
      U9-6 (OPN) or K22-24 (POS) - Body ground Always 10 kΩ or higher
      U9-8 (CTY) or K22-20 (FUL) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE BACK DOOR MOTOR UNIT Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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


    1. B006L57C10
      *a

      Rear view of wire harness connector

      (to Multiplex Network Door ECU)

      Disconnect the multiplex network door ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K21-1 (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
      K21-18 (ECUB) - Body ground Always 11 to 14 V
      K21-19 (B) - Body ground Always 11 to 14 V
      K21-16 (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

  8. 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

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


    1. Disconnect the U9 back door lock assembly connector.

    2. Disconnect the K21 multiplex network door ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      U9-1 (M-) - K21-7 (DC-) Always Below 1 Ω
      U9-2 (POL) - K21-14 (PAWL) Always Below 1 Ω
      U9-3 (CLS) - K21-13 (HAF) Always Below 1 Ω
      U9-4 (M+) - K21-6 (DC+) Always Below 1 Ω
      U9-6 (OPN) - K21-5 (POS) Always Below 1 Ω
      U9-7 (E) - Body ground Always Below 1 Ω
      U9-8 (CTY) - K21-12 (FUL) Always Below 1 Ω
      U9-1 (M-) or K21-7 (DC-) - Body ground Always 10 kΩ or higher
      U9-2 (POL) or K21-14 (PAWL) - Body ground Always 10 kΩ or higher
      U9-3 (CLS) or K21-13 (HAF) - Body ground Always 10 kΩ or higher
      U9-4 (M+) or K21-6 (DC+) - Body ground Always 10 kΩ or higher
      U9-6 (OPN) or K21-5 (POS) - Body ground Always 10 kΩ or higher
      U9-8 (CTY) or K21-12 (FUL) - 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