Fuel Lid: Inspection: Trouble Symptom

Electric fuel lock system does not operate.

Wiring diagram: 

Door lock control system Ref. to WIRING SYSTEM>DOOR LOCK CONTROL SYSTEM>WIRING DIAGRAM

Courtesy of SUBARU OF AMERICA, INC.

1. CHECK DOOR LOCK/UNLOCK OPERATION  .
   1. Turn the ignition switch to OFF.
   2. Using the keyless transmitter or access key (touch sensor), check that door lock/unlock is possible.

   Does it lock/unlock normally?

   Yes  : Go to  2.

   No  : Check the door lock actuator and circuit. Ref. to SECURITY AND LOCKS>DOOR LOCK CONTROL SYSTEM>INSPECTION>CHECK DOOR LOCK ACTUATOR AND CIRCUIT 

2. CHECK ELECTRIC FUEL UNLOCK OPERATION  .
   1. Turn the ignition switch to ON.
   2. Lock all doors using the door lock switch.
   3. Turn the ignition switch to OFF.

   Does the electric fuel unlock operate when turning the ignition switch to OFF?

   Yes  : Electric fuel unlock is normal.

   No  : Go to  3.

3. CHECK BODY INTEGRATED UNIT  .

   Using Subaru Select Monitor, display data of [Ignition Voltage] in [Data monitor] of [Body Control]. Ref. to COMMON (DIAGNOSTICS)>DATA MONITOR

   Does the voltage switch between 0 V (OFF) ←→ 9 V or more (ON) when the ignition switch is operated?

   Yes  : Go to  4.

   No  : Check the ignition switch circuit. Ref. to SECURITY AND LOCKS>SECURITY SYSTEM>INSPECTION>CHECK IGNITION SWITCH CIRCUIT 

4. CHECK HARNESS  .
   1. Turn the ignition switch to OFF.
   2. Disconnect the connector of the body integrated unit and fuel lid lock actuator.
   3. Check the harness between the body integrated unit and fuel lid lock actuator.

      Connector & terminal 

      (i81) No. 7 - (R134) No. 3:

      (i4) No. 4 - (R134) No. 1:

   Is the resistance less than 10 Ω?

   Yes  : Go to  5.

   No  : Repair or replace the defective part.

5. CHECK FUEL LID LOCK ACTUATOR  .

   Apply battery voltage between fuel lid lock actuator connector terminals.

   Terminals 

   Lock 

   No. 1 (+) - No. 3 (-):

   Unlock 

   No. 3 (+) - No. 1 (-):

   Does it operate properly?

   Yes  : Replace the body integrated unit. Ref. to BODY CONTROL/COMMUNICATION SYSTEM>BODY INTEGRATED UNIT

   No  : Replace the fuel lid lock actuator. Ref. to SECURITY AND LOCKS>FUEL LID