Basic Diagnostic Procedure: Procedure

NOTE: This section is specified for H4SO model.

AUTOMATIC TRANSMISSION DIAGNOSTIC PROCEDURE

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 Refer 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) . 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.