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Diagnostic Procedure

WARNING: This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC PROCEDURE

Step Check Yes No
1 CHECK DTC. 
Read the DTC of body integrated unit using Subaru Select Monitor.
Is DTC B1401 detected? Go to step . < Refer to DTC P1572 IMM CIRCUIT FAILURE (EXCEPT ANTENNA CIRCUIT) , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
2 CHECK LAN COMMUNICATION SYSTEM. 
Inspect LAN communication system.< Refer to BASIC DIAGNOSTIC PROCEDURE . >
Is DTC U1300, U1301, U1302, B1100 or B1101 of the body integrated unit displayed? Perform the diagnosis according to the DTC.< Refer to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . > Go to step .
3 CHECK COMBINATION METER. 
  1. Perform the registration of immobilizer. Refer to the "REGISTRATION MANUAL FOR IMMOBILIZER".
  2. Start the engine.
Does the engine start? System is normal. Replace the combination meter.< Refer to REMOVAL , Combination Meter. >
NOTE:
  • When the combination meter has been replaced, be sure to perform the registration procedure of immobilizer.
  • When the combination meter and body integrated unit are replaced at a time, the registration can not be completed. In this case, it is necessary to rewrite the ID into the body integrated unit.