Basic Diagnostic Procedure: Procedure: Engine

Step	Check	Yes	No
1 CHECK ENGINE START FAILURE . Ask the customer when and how the trouble occurred using the interview check list. Refer to CHECK , Check List for Interview. Start the engine.	Does the engine start?	Go to step 2 .	Inspection using "Diagnostics for Engine Start Failure". Refer to Diagnostics for Engine Starting Failure .
2 CHECK ILLUMINATION OF MALFUNCTION INDICATOR LIGHT.	Does the malfunction indicator light illuminate?	Go to step 3 .	Inspection using "General Diagnostic Table". Refer to INSPECTION , General Diagnostic Table.
3 CHECK COMMUNICATION STATUS. Turn the ignition switch to OFF. Connect the Subaru Select Monitor or general scan tool to the data link connector. Turn the ignition switch to ON, and run the Subaru Select Monitor or general scan tool. NOTE: Subaru Select Monitor For detailed procedures, refer to "Subaru Select Monitor". Refer to Subaru Select Monitor . General scan tool For detailed operation procedures, refer to the general scan tool operation manual.	Does Subaru select monitor or general scan tool communicate with vehicle normally?	Go to step 4 .	Inspection using "Diagnostics Procedure for Subaru Select Monitor Communication". Refer to Diagnostic Procedure for Subaru Select Monitor Communication .
4 CHECK DTC. Read DTC using Subaru Select Monitor or general scan tool. NOTE: Subaru Select Monitor Refer to READ DIAGNOSTIC TROUBLE CODE (DTC) for detailed operation procedure. Refer to Read Diagnostic Trouble Code (DTC) . General scan tool For detailed operation procedures, refer to the general scan tool operation manual.	Is DTC displayed on Subaru Select Monitor or general scan tool?	Record the DTC. Repair the trouble cause. Refer to List of Diagnostic Trouble Code (DTC) . Go to step 5 .	Repair the related parts. NOTE: If DTC is not shown on display although the malfunction indicator light illuminates, perform the diagnosis of malfunction indicator light circuit or combination meter. Refer to Malfunction Indicator Light .
5 CHECK FREEZE FRAME DATA. Check the freeze frame data using the Subaru Select Monitor or general scan tool. NOTE: Subaru Select Monitor For detailed procedures, refer to "Subaru Select Monitor". Refer to Subaru Select Monitor . General scan tool For detailed operation procedures, refer to the general scan tool operation manual.	Is freeze frame data displayed on Subaru Select Monitor or general scan tool?	Record the freeze frame data. Repair the cause of fault, and go to the next step. Go to step 6 .	Go to step 6 .
6 PERFORM DIAGNOSIS. Perform the Clear Memory Mode. Refer to Clear Memory Mode . Perform the Inspection Mode or Drive Cycle. Refer to Inspection Mode . Refer to Drive Cycle .	Is DTC displayed on Subaru Select Monitor or general scan tool?	Inspect using "Diagnostic Procedure with Diagnostic Trouble Code (DTC)". Refer to Diagnostic Procedure with Diagnostic Trouble Code (DTC) .	Finish the diagnosis.