DTC B1503: Meter Control Module Can Register Stuck

DTC detecting condition  :

Combination meter CAN controller malfunction

Trouble symptom  :

Normal operation becomes impossible because the communication with other parts are not established.

Failure detection pattern  :

• "Primary" (high-priority diagnosis)

1. BASIC INSPECTION  .

   Before performing the diagnosis, perform basic inspection. Ref. to COMBINATION METER (DIAGNOSTICS)>GENERAL DESCRIPTION>INSPECTION .

   NOTE:

   • Check the battery and its installation condition.
   • Check the related fuse.
   • Visually check that the related connectors are properly connected.

     Also, check the related ground terminal for looseness and corrosion.

   Is the check result OK?

   Yes  : GO TO  2.

   No  : Repair the defective part.

2. CHECK DTC  .
   1. Turn the ignition switch to ON.
   2. Read the DTC of [Combination Meter] using the Subaru Select Monitor. Ref. to COMBINATION METER (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .

   Is DTC B1503 displayed? (Current code)

   Yes  : Replace the combination meter. (Defective hardware or software) Ref. to INSTRUMENTATION/DRIVER INFO>COMBINATION METER .

   After replacement, GO TO  3.

   No  : Replace the combination meter. (Temporarily defective hardware or software) Ref. to INSTRUMENTATION/DRIVER INFO>COMBINATION METER .

   After replacement, GO TO  3.

3. CHECK REPAIR  .
   1. Perform the inspection mode corresponding to DTC. Ref. to COMBINATION METER (DIAGNOSTICS)>INSPECTION MODE>OPERATION .
   2. Confirm that DTC or cancel code is not stored and the malfunction is eliminated.

   Is the check result OK?

   Yes  : Finish the diagnosis.

   No  : Perform the diagnosis according to the basic diagnostic procedure. Ref. to COMBINATION METER (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE .