BASIC DIAGNOSTIC PROCEDURE
Engine (Diagnostics)
1. Basic Diagnostic Procedure
S068501
A: PROCEDURE
1. WITH SUBARU SELECT MONITOR
No.
Step
Check
Yes
No
1
CHECK ENGINE START FAILURE.
1) Ask the customer when and how the trouble occurred using the interview check list. <Ref. to EN(SOHCw/oOBD)-4 CHECK, Check List for Interview.> 2) Start the engine.
Does the engine start?
Go to step 2.
Inspection using "Diagnostics for Engine Starting Failure". <Ref. to EN(SOHCw/ oOBD)-47 Diag­nostics for Engine Starting Failure.>
2
CHECK ILLUMINATION OF CHECK ENGINE MALFUNCTION INDICATOR LAMP (MIL).
<Ref. to EN(SOHCw/oOBD)-33 ACTIVATION OF CHECK ENGINE MALFUNCTION INDI­CATOR LAMP (MIL), Engine Malfunction Indi­cator Lamp (MIL).>
Does MIL illuminate?
Go to step 3.
Inspection using "General Diagnos­tic Table". <Ref. to EN(SOHCw/ oOBD)-113 INSPECTION, General Diagnos­tic Table.>
3
CHECK INDICATION OF DTC ON DISPLAY.
1) Turn ignition switch to OFF. 2) Connect the Subaru Select Monitor to data link connector. 3) Turn ignition switch to ON and the Subaru Select Monitor switch to ON. 4) Read DTC on the Subaru Select Monitor. <Ref. to EN(SOHCw/oOBD)-27 WITH SUBARU SELECT MONITOR, OPERATION, Read Diagnostic Trouble Code.>
Does the Subaru Select Monitor indicate DTC? <Ref. to EN(SOHCw/ oOBD)-65 LIST, List of Diagnostic Trouble Code (DTC).>
Record diagnostic trouble code. Repair the trouble cause. <Ref. to EN(SOHCw/ oOBD)-68 Diag­nostic Procedure with Diagnostic Trouble Code (DTC).> Go to step 4.
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. <Ref. to EN(SOHCw/ oOBD)-33 Engine Malfunction Indi­cator Lamp (MIL).>
4
PERFORM THE DIAGNOSIS.
1) Perform the clear memory mode. <Ref. to EN(SOHCw/oOBD)-31 OPERATION, Clear Memory Mode.> 2) Perform the inspection mode. <Ref. to EN(SOHCw/oOBD)-29 OPERATION, Inspec­tion Mode.>
Does the Subaru Select Monitor indicate DTC? <Ref. to EN(SOHCw/ oOBD)-65 LIST, List of Diagnostic Trouble Code (DTC).>
Record diagnostic trouble code. Repair the trouble cause. <Ref. to EN(SOHCw/ oOBD)-68 Diag­nostic Procedure with Diagnostic Trouble Code (DTC).> Go to step 4.
Complete the diagnosis.
EN(SOHCw/oOBD)-2
BASIC DIAGNOSTIC PROCEDURE
Engine (Diagnostics)
2. WITHOUT SUBARU SELECT MONITOR
• Be sure to check again from the beginning in order to prevent secondary trouble caused by repair work.
S068501E4502
CAUTION:
• Check the connector while it is connected
unless specified otherwise.
No.
Step
Check
Yes
No
1
CHECK ENGINE START FAILURE.
1) Ask the customer when and how the trouble occurred using the interview check list. <Ref. to EN(SOHCw/oOBD)-4 CHECK, Check List for Interview.> 2) Start the engine.
Does the engine start?
Go to step 2.
Inspection using "Diagnostics for Engine Starting Failure". <Ref. to EN(SOHCw/ oOBD)-47 Diag­nostics for Engine Starting Failure.>
2
CHECK ILLUMINATION OF CHECK ENGINE MALFUNCTION INDICATOR LAMP (MIL).
<Ref. to EN(SOHCw/oOBD)-33 ACTIVATION OF CHECK ENGINE MALFUNCTION INDI­CATOR LAMP (MIL), Engine Malfunction Indi­cator Lamp (MIL).>
Does MIL illuminate?
Go to step 3.
Inspection using "9. General Diag­nostic Table". <Ref. to EN(SO-HCw/oOBD)-113 INSPECTION, General Diagnos­tic Table.>
3
CHECK INDICATION OF DTC ON MIL.
1) Perform the read diagnostic trouble code (read memory mode). <Ref. to EN(SOHCw/ oOBD)-27 WITHOUT SUBARU SELECT MONITOR, OPERATION, Read Diagnostic Trouble Code.> 2) Read DTC on MIL.
Does the MIL indicate DTC? <Ref. to EN(SOHCw/ oOBD)-65 LIST, List of Diagnostic Trouble Code (DTC).>
Repair the trouble cause. Go to step 4.
Repair the related parts. NOTE: If DTC is not shown on MIL although the MIL illuminates, per­form diagnostics of MIL (CHECK ENGINE malfunc­tion indicator lamp) circuit or combination meter. <Ref. to EN(SOHCw/ oOBD)-33 Engine Malfunction Indi­cator Lamp (MIL).>
4
PERFORM THE DIAGNOSIS.
1) Perform the clear memory mode. <Ref. to EN(SOHCw/oOBD)-31 OPERATION, Clear Memory Mode.> 2) Perform the inspection mode. <Ref. to EN(SOHCw/oOBD)-29 OPERATION, Inspec­tion Mode.>
Does the MIL indicate DTC? <Ref. to EN(SOHCw/ oOBD)-65 LIST, List of Diagnostic Trouble Code (DTC).>
Repair the trouble cause. Go to step 4.
Complete the diagnosis.
EN(SOHCw/oOBD)-3