BACK DOOR CLOSER SYSTEM Back Door Closer does not Operate

DESCRIPTION

When 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) the multiplex network door ECU has not been initialized, 3) a malfunction in the multiplex network door ECU power source circuit, 4) a malfunction in the back door lock assembly circuit, or 5) a multiplex network door ECU malfunction.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

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 CHART Click here

   C

   GO TO DTC CHART 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. 

      *a	Front view of wire harness connector (to Multiplex Network Door ECU)

      Disconnect the X6 and X7 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 X7-7 (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 X6-1 (ECUB) - Body ground Always 11 to 14 V X7-8 (B) - Body ground Always 11 to 14 V X6-7 (IG) - Body ground Engine switch on (IG) 11 to 14 V X6-7 (IG) - Body ground 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 X19 back door lock assembly connector.

   2. Disconnect the X6 and X7 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 X19-1 (M+) - X7-10 (DC+) Always Below 1 Ω X19-2 (M-) - X7-9 (DC-) Always Below 1 Ω X19-3 (CTY) - X6-19 (FUL) Always Below 1 Ω X19-5 (CLS) - X6-21 (HAF) Always Below 1 Ω X19-6 (OPN) - X6-24 (POS) Always Below 1 Ω X19-4 (E) - Body ground Always Below 1 Ω X19-1 (M+) or X7-10 (DC+) - Body ground Always 10 kΩ or higher X19-2 (M-) or X7-9 (DC-) - Body ground Always 10 kΩ or higher X19-3 (CTY) or X6-19 (FUL) - Body ground Always 10 kΩ or higher X19-5 (CLS) or X6-21 (HAF) - Body ground Always 10 kΩ or higher X19-6 (OPN) or X6-24 (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