Basic Diagnostic Procedure: Procedure

WARNING: This page is about a different car, the 2022 Subaru WRX. However, it is still accessible from the selected car via links, so may be relevant.

PERFORM CUSTOMER INTERVIEW .
Ask the customer when and how the trouble occurred using the Check List for Interview. Ref. to FRONT RELAY CONTROL MODULE (DIAGNOSTICS)>CHECK LIST FOR INTERVIEW

Did you interview the customer?

Yes : Go to 2.

No : Perform the interview, and Go to 2.
BASIC INSPECTION .
Perform basic inspection. Ref. to FRONT RELAY CONTROL MODULE (DIAGNOSTICS)>GENERAL DESCRIPTION>INSPECTION

Is the check result OK?

Yes : Go to 3.

No : Repair the faulty part found in basic inspection, and Go to 3.
CHECK SUBARU SELECT MONITOR COMMUNICATION .
1. Turn the ignition switch to OFF.
2. Connect the Subaru Select Monitor to data link connector. Ref. to COMMON (DIAGNOSTICS)>DATA LINK CONNECTOR
3. Turn the ignition switch to ON and run the Subaru Select Monitor.
4. Select [Front Relay Control Module].
  NOTE:
  For detailed operation procedures, refer to "Help" of application.
Is communication possible?

Yes : Go to 4.

No : Check the communication circuit. Ref. to FRONT RELAY CONTROL MODULE (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE FOR SUBARU SELECT MONITOR COMMUNICATION>INSPECTION
CHECK DTC .
1. Read the DTC of [Front Relay Control Module] using the Subaru Select Monitor. Ref. to FRONT RELAY CONTROL MODULE (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC)
2. Record all DTCs and time stamp.
  NOTE:
  For time stamp, refer to LAN system. Ref. to LAN SYSTEM (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION>TIME STAMP
Are any DTCs displayed? (Current code)

Yes : Record the DTC, time stamp and freeze frame data, and Go to 5.

No : Finish the diagnosis.
PERFORM DIAGNOSIS .
1. Perform the diagnosis according to the displayed DTC. Ref. to FRONT RELAY CONTROL MODULE (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC)>LIST
2. Repair or replace the cause of trouble.
3. Using the Subaru Select Monitor, perform the clear memory of [Front Relay Control Module]. Ref. to COMMON (DIAGNOSTICS)>CLEAR MEMORY
4. Execute the inspection mode. Ref. to FRONT RELAY CONTROL MODULE (DIAGNOSTICS)>INSPECTION MODE
5. Read the DTC of [Front Relay Control Module] using the Subaru Select Monitor. Ref. to FRONT RELAY CONTROL MODULE (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC)
Are any DTCs displayed? (Current code)

Yes : Repeat step 5 until DTC is not shown. Go to 5.

No : Finish the diagnosis.