Subaru Crosstrek Service Manual: 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.

• 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">

1.CHECK BATTERY.

Using a tester, measure the voltage of the battery.

Is the voltage 11 V or more?

Basic Diagnostic Procedure > PROCEDURE">Go to Step 2.

Charge or replace the battery and perform check pre-inspection. Basic Diagnostic Procedure > PROCEDURE">Go to Step 2.

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">Go to Step 3.

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">Go to Step 4.

Check it according to DTC of LAN system. Basic Diagnostic Procedure > PROCEDURE">

4.CHECK TROUBLE SYMPTOM.

1) Read DTC for «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 > COMMUNICATION FOR INITIALIZING IMPOSSIBLE">

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.

Basic Diagnostic Procedure > PROCEDURE">Go to Step 5.

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">Go to Step 6.

6.CHECK TROUBLE PHENOMENON.

1) Perform check of current data. Read Current Data">

2) Perform a function check. General Description > CAUTION">

3) Perform a unit check.

Was the trouble cause found?

Repair the cause of trouble.

Repeat a basic check again.

Communication for initializing impossible

Check list for interview Check

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