BASIC DIAGNOSTIC PROCEDURE
Engine (Diagnostics)
1. Basic Diagnostic Procedure
S088501
A: PROCEDURE
1. ENGINE S088501E4501
S088501E45
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(DOHC TURBO)-4, CHECK, Check List for Interview.> 2) Start the engine.
Does the engine start?
Go to step 2.
Inspection using "Diagnostics for Engine Start Fail≠ure". <Ref. to EN(DOHC TURBO)-63, Diag≠nostics for Engine Starting Failure.>
2
CHECK ILLUMINATION OF CHECK ENGINE MALFUNCTION INDICATOR LAMP (MIL).
Does CHECK ENGINE malfunction indicator lamp illuminate?
Go to step 3.
Inspection using "General Diagnos≠tics Table". <Ref. to EN(DOHC TURBO)-344, General Diagnos≠tic Table.>
3
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 connec≠tor. 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.
Does the Subaru Select Monitor or OBD-II general scan tool indicate DTC?
Record diagnostic trouble code. Repair the trouble cause. <Ref. to EN(DOHC TURBO)-82, List of Diagnostic Trouble Code (DTC).> Go to step 4.
Repair the related parts. NOTE: If DTC is not shown on display although the MIL illuminates, per≠form diagnostics of MIL (CHECK ENGINE malfunc≠tion indicator lamp) circuit or combination meter. <Ref. to EN(DOHC TURBO)-50, Engine Malfunc≠tion Indicator Lamp (MIL).>
4
PERFORM THE DIAGNOSIS.
1) Perform the clear memory mode. <Ref. to EN(DOHC TURBO)-47, Clear Memory Mode.> 2) Perform the inspection mode. <Ref. to EN(DOHC TURBO)-44, Inspection Mode.>
Does the Subaru Select Monitor or OBD-II general scan tool indicate DTC?
Inspect using "Diagnostics Pro≠cedure with Diag≠nostic Trouble Code (DTC)". <Ref. to EN(DOHC TURBO)-90, Diag≠nostic Procedure with Diagnostic Trouble Code (DTC).>
Complete the diagnosis.
EN(DOHC TURBO)-2
BASIC DIAGNOSTIC PROCEDURE
Engine (Diagnostics)
2. AUTOMATIC TRANSMISSION
S088501E4502
When trouble code about automatic transmission is shown on display, carry out the following basic check. After that, carry out the replacement or repair work.
1)  ATF level check <Ref. to AT-9, Automatic Trans≠mission Fluid.>
2)   Differential gear oil level check <Ref. to AT-11, Differential Gear Oil.>
3)  ATF leak check <Ref. to AT-9, Automatic Trans≠mission Fluid.>
4)   Differential gear oil leak check <Ref. to AT-11, Differential Gear Oil.>
5)  Stall test <Ref. to AT-11, Differential Gear Oil.>
6)   Line pressure test <Ref. to AT-16, Line Pres≠sure Test.>
7)  Transfer clutch pressure test <Ref. to AT-18, Transfer Clutch Pressure Test.>
8)  Time lag test <Ref. to AT-15, Time Lag Test.>
9)   Road test <Ref. to AT-12, Road Test.>
10)  Shift characteristics <Ref. to AT-18, Transfer Clutch Pressure Test.>
EN(DOHC TURBO)-3