Basic Diagnostic Procedure: Procedure

CAUTION:

Subaru Select Monitor kit is required for reading DTC, performing diagnosis and reading current data.
Before removal or installation, be sure to remove any foreign matter (dust, moisture, oil, etc.)
For models with the keyless access system, registration of the immobilizer may be required after a replacement of the control module, etc. For detailed procedure, refer to the "REGISTRATION MANUAL FOR IMMOBILIZER".

NOTE:

Using the function setting (customize), check that the keyless access system is not in a cancelled state. < Refer to OPERATION , Function Setting (Customize). >
Check list for interview < Refer to CHECK LIST FOR INTERVIEW . >

Step	Check	Yes	No
1 CHECK BATTERY. Using a tester, measure the battery voltage.	Is the voltage 11 V or more?	Go to step 2 .	Charge or replace the battery and perform check pre-Inspection. Go to step 2 .
2 CHECK PRE-INSPECTION. Use the interview check list to interview the user. < Refer to CHECK LIST FOR INTERVIEW . >	Was the symptoms of the trouble recorded in the interview?	Go to step 3 .	Interview the user again.
3 BASIC INSPECTION. Check the DTC of the LAN system. < Refer to INSPECTION , General Description. >	Is LAN system normal?	Go to step 4 .	Follow the DTC of the LAN system to repair or replace.
4 CHECK TROUBLE SYMPTOM. Read diagnostic trouble code (DTC) for the keyless access system. < Refer to OPERATION , Read Diagnostic Trouble Code (DTC). > NOTE: If the communication function of the Subaru Select Monitor cannot be executed properly, check the communication circuit. < Refer to COMMUNICATION FOR INITIALIZING IMPOSSIBLE , Subaru Select Monitor. > Record all DTCs and freeze frame data.	Is DTC displayed on Subaru Select Monitor?	Perform diagnosis according to the DTC.	Go to step 5 .
5 CHECK PHENOMENON LIST. Check the "Phenomenon List". < Refer to GENERAL DIAGNOSTIC TABLE . >	Is there a symptom that corresponds in the phenomenon list?	Perform diagnosis according to the procedures in the phenomenon list.	Go to step 6 .
6 CHECK TROUBLE PHENOMENON. Perform check of current data. Perform a function check. Perform a unit check.	Was the trouble cause found?	Repair the cause of trouble.	Repeat a basic check again.