Basic Diagnostic Procedure For Engine

6A1: CHECK ENGINE START FAILURE.
1. Ask the customer when and how the trouble occurred using the interview check list.See Diagnostic Strategies
2. Start the engine.

CHECK: Does the engine start?

YES: Go to step 6A2.

NO: Inspection using "Diagnostics for Engine Start Failure". Refer to Diagnosis By Symptom. Diagnostics For Engine Starting Failure

6A2: CHECK ILLUMINATION OF CHECK ENGINE MALFUNCTION INDICATOR LAMP (MIL).

CHECK: Does CHECK ENGINE malfunction indicator lamp illuminate?

YES: Go to step 6A3.

NO: Inspection using "9.General Diagnostics Table".Refer to Diagnosis By Symptom. General Diagnostic Table

6A3: CHECK INDICATION OF DTC ON DISPLAY.
1. Turn ignition switch to OFF.
2. Connect the Subaru Select Monitor or the OBD-II general scan tool to data link connector.
3. Turn ignition switch to ON and the Subaru Select Monitor or OBD-II general scan tool switch to ON.
4. Read DTC on the Subaru Select Monitor or OBD-II general scan tool.

CHECK: Does the Subaru Select Monitor or OBD-II general scan tool indicate DTC?

YES: Go to step 6A4.

NO: Repair the related parts.

NOTE: If DTC is not shown on display although the MIL illuminates, perform diagnostics of MIL (CHECK ENGINE malfunction indicator lamp) circuit or combination meter.

6A4: PERFORM THE DIAGNOSIS.
1. Inspect using "Diagnostics Chart with Trouble Code (DTC)".

NOTE: Carry out the basic check, only when DTC about automatic transmission is shown on display.

2. Repair the trouble cause.
3. Perform the clear memory mode. Refer to How to Clear Diagnostic Trouble Codes.
4. Perform the inspection mode. Refer to How to Clear Diagnostic Trouble Codes.

CHECK: Does the Subaru Select Monitor or OBD-II general scan tool indicate DTC?

YES: Inspect using "Diagnostics Chart with Trouble Code (DTC)".

NO: Complete the diagnosis.