Basic Diagnostic Procedure: Procedure

WARNING: This page is about a different variant/trim than selected.

NOTE: This information is specified for H4SO model.

DIAGNOSTIC PROCEDURE CHART

Step	Check	Yes	No
1 CHECK PRE-INSPECTION. Ask the customer when and how trouble occurred using interview checklist. < Ref. to CHECK LIST FOR INTERVIEW . > Before performing the diagnosis, inspect following items which might influence the AT problems. General inspection < Ref. to INSPECTION , General Description. > Make sure that each harness connector connections are tight. Visually inspect the harness and check for any damage. Oil leak Stall speed test < Ref. to STALL TEST . > Line pressure test < Ref. to LINE PRESSURE TEST . > Transfer clutch pressure test < Ref. to TRANSFER CLUTCH PRESSURE TEST . > Time lag test < Ref. to TIME LAG TEST . > Road test < Ref. to ROAD TEST . > Inhibitor switch < Ref. to INHIBITOR SWITCH . >	Is the unit that might influence AT problem normal?	Go to step 2.	Repair or replace each item.
2 CHECK AT OIL TEMP WARNING LIGHT. Turn the ignition switch to ON.	Does the AT OIL TEMP warning light blink?	Go to step 4.	Go to step 3.
3 CHECK AT OIL TEMP WARNING LIGHT. Turn the ignition switch to OFF. Repair the AT OIL TEMP warning light circuit or power supply and ground line circuit. < Ref. to DIAGNOSTIC PROCEDURE FOR AT OIL TEMP WARNING LIGHT . > Turn the ignition switch to ON.	Does the AT OIL TEMP warning light blink?	Go to step 4.	Go to step 5.
4 CHECK INDICATION OF DTC. Calling up the DTC. Without Subaru Select Monitor < Ref. to WITHOUT SUBARU SELECT MONITOR , OPERATION, Read Diagnostic Trouble Code (DTC). > With Subaru Select Monitor < Ref. to WITH SUBARU SELECT MONITOR , OPERATION, Read Diagnostic Trouble Code (DTC). > NOTE: If the communication function of select monitor cannot be executed normally, check the communication circuit. < Ref. to COMMUNICATION FOR INITIALIZING IMPOSSIBLE , Diagnostic Procedure for Select Monitor Communication. >	Is the DTC displayed?	Go to step 6. NOTE: Record all DTC.	Go to step 5.
5 PERFORM THE GENERAL DIAGNOSTICS. Inspect using "Diagnostic Procedure without DTC".< Ref. to DIAGNOSTIC PROCEDURE WITHOUT DIAGNOSTIC TROUBLE CODE (DTC) . > Inspect using "Symptom Related Diagnostic". < Ref. to SYMPTOM RELATED DIAGNOSTIC . > Perform the clear memory mode. Without Subaru Select Monitor < Ref. to WITHOUT SUBARU SELECT MONITOR , OPERATION, Clear Memory Mode. > With Subaru Select Monitor < Ref. to WITH SUBARU SELECT MONITOR , OPERATION, Clear Memory Mode. > Perform the inspection mode. < Ref. to INSPECTION MODE . > Calling up the DTC. Without Subaru Select Monitor < Ref. to WITHOUT SUBARU SELECT MONITOR , OPERATION, Read Diagnostic Trouble Code (DTC). > With Subaru Select Monitor < Ref. to WITH SUBARU SELECT MONITOR , OPERATION, Read Diagnostic Trouble Code (DTC). >	Is the DTC displayed?	Go to step 6.	Complete the diagnosis.
6 PERFORM THE DIAGNOSIS. Inspect using "Diagnostics Chart with DTC". < Ref. to DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC) . > NOTE: For DTC table, refer to "List of Diagnostic Trouble Code (DTC)". < Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . > Repair the trouble cause. Perform the clear memory mode. Without Subaru Select Monitor < Ref. to WITHOUT SUBARU SELECT MONITOR , OPERATION, Clear Memory Mode. > With Subaru Select Monitor < Ref. to WITH SUBARU SELECT MONITOR , OPERATION, Clear Memory Mode. > Perform the inspection mode. < Ref. to INSPECTION MODE . > Calling up the DTC. Without Subaru Select Monitor < Ref. to WITHOUT SUBARU SELECT MONITOR , OPERATION, Read Diagnostic Trouble Code (DTC). > With Subaru Select Monitor < Ref. to WITH SUBARU SELECT MONITOR , OPERATION, Read Diagnostic Trouble Code (DTC). >	Is the DTC displayed?	Inspect using "Diagnostics Procedure with Diagnostic Trouble Code (DTC)". < Ref. to DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC) . >	Complete the diagnosis.