Subaru Legacy BN/BS (2015-2019) Service Manual: Basic diagnostic procedure procedure

Subaru Legacy BN/BS (2015-2019) Service Manual / Keyless access with push button start system (diagnostics) / 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.).

• Registration of immobilizer may be needed after the replacement of control modules, etc. For detailed procedure, refer to the “REGISTRATION MANUAL FOR IMMOBILIZER” provided as a separate volume.

NOTE:

• Using the Function Setting (Customize), check that the keyless access system is not in a cancelled state. Function Setting (Customize) > OPERATION

• Check List for Interview 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-	Basic Diagnostic Procedure > PROCEDURE	Charge or replace the battery and perform check pre-inspection. Basic Diagnostic Procedure > PROCEDURE
2.CHECK PRE-INSPECTION. Use the interview check list to interview the user. Check List for Interview	Was the symptoms of the trouble recorded in the interview-	Basic Diagnostic Procedure > PROCEDURE	Interview the user again.
3.BASIC INSPECTION. Perform the inspection for LAN system. Basic Diagnostic Procedure > PROCEDURE	Is LAN system normal-	Basic Diagnostic Procedure > PROCEDURE	Check it according to DTC of LAN system. Basic Diagnostic Procedure > PROCEDURE
4.CHECK TROUBLE SYMPTOM. 1) Read diagnostic trouble code (DTC) for the «keyless access with push button start». Read Diagnostic Trouble Code (DTC) NOTE: If the communication function of the Subaru Select Monitor cannot be executed properly, check the communication circuit. Subaru Select Monitor > INSPECTION 2) Record all DTCs, time stamp and freeze frame data. NOTE: For time stamp, refer to “LAN SYSTEM”. General Description > CAUTION	Is DTC displayed on Subaru Select Monitor-	Perform diagnosis according to the DTC. After diagnosis, Basic Diagnostic Procedure > PROCEDURE	Basic Diagnostic Procedure > PROCEDURE
5.CHECK PHENOMENON LIST. Check the “Phenomenon List”. General Diagnostic Table	Is there a symptom that corresponds in the phenomenon list-	Perform diagnosis according to the procedures in the phenomenon list.	Basic Diagnostic Procedure > PROCEDURE
6.CHECK TROUBLE PHENOMENON. 1) Perform check of current data. Read Current Data 2) Perform a function check. 3) Perform a unit check.	Was the trouble cause found-	Repair the cause of trouble.	Repeat a basic check again.
7.PERFORM DIAGNOSIS. 1) Perform the Clear Memory Mode. Clear Memory Mode 2) Perform the Inspection Mode. Inspection Mode	Is DTC displayed on Subaru Select Monitor-	Perform diagnosis according to the DTC.	Finish the diagnosis.

Keyless access with push button start system (diagnostics)

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Check list for interview check

Inspect the following items regarding the vehicle’s state.Keyless Access with Push Button Start System Trouble Check List for Interview Received Year Month DateCustomer&rsquo ...

Other materials:

Removal
NOTE:When replacing a single part, perform the work with the engine assembly installed to body.1. When working on the vehicleNOTE:When working on the vehicle, perform the following steps also.(1) Remove the air intake duct. Air Intake Duct > REMOVAL2. Remove the V-belts. V-belt > REMOVAL3. Use the ...