DTC B1014: Acc Power

DTC detecting condition: 

Voltage failure caused by poor contact of ACC power supply circuit

Trouble symptom: 

DRL may not illuminate.

Wiring diagram: 

Shift lock control system Ref. to WIRING SYSTEM>Shift Lock Control System>WIRING DIAGRAM

Courtesy of SUBARU OF AMERICA, INC.

1. CHECK DTC  .

   Read the DTC of body integrated unit using Subaru Select Monitor. Ref. to BODY CONTROL SYSTEM (DIAGNOSTICS)>Read Diagnostic Trouble Code (DTC) 

   Is DTC B1014 displayed? (Current malfunction)

   Yes: Go to  2

   No: Go to  5

2. CHECK DTC  .
   1. Turn the ignition switch to OFF.
   2. Disconnect and then connect the body integrated unit connector.
   3. Wait approx. 2 minutes.
   4. Turn the ignition switch to ON.
   5. Read the DTC of body integrated unit using Subaru Select Monitor. Ref. to BODY CONTROL SYSTEM (DIAGNOSTICS)>Read Diagnostic Trouble Code (DTC) 

   Is DTC B1014 displayed? (Current malfunction)

   Yes: Go to  3

   No: Go to  5

3. CHECK FUSE  .
   1. Turn the ignition switch to OFF.
   2. Check the fuse.

   Is the check result OK?

   Yes: Go to  4

   No: Replace the defective fuse.

4. CHECK HARNESS  .
   1. Disconnect the body integrated unit connector.
   2. Using the tester, measure the voltage between terminals.

      Connector & terminal 

      (B280) No. 32 (+) - Chassis ground (-):

   Is the voltage 8.5 - 16.5 V?

   Yes: Replace the body integrated unit. Ref. to SECURITY AND LOCKS>Body Integrated Unit

   No: Repair the harness between body integrated unit and fuse.

5. CHECK CONNECTOR  .
   1. Turn the ignition switch to OFF.
   2. Disconnect the body integrated unit connector.

   Is there poor contact of connector?

   Yes: Repair or replace the poor contact of connector.

   No: Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

   NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.