Preliminary Check

NOTE:

Before performing any pin point test or component diagnosis, a preliminary check must be performed.

Check for Technical Service Bulletins that may supersede any information in the repair information or GST Manual.

Step	Procedure	Result / Action to Take
1	CONNECT: Scan Tool. IGNITION: ON. CHECK: for stored or related DTC's. -- Were any other DTCs stored?	YES: GO TO Step 2. NO: GO TO Step 3.
2	REPAIR: DTCs first before performing any of the following steps.	GO TO: Proper Diagnostic procedure per the stored DTC: GO TO: ENGINE DTC TABLES or TRANSMISSION DTC TABLES .
3	USE: scan tool and erase the DTC memory. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY . PERFORM: road test to attempt to duplicate the customers complaint. -- Does DTC return?	YES: GO TO Step 4. NO: GO TO Step 5.
4	PERFORM: diagnostic procedure for that DTC.	GO TO: Proper Diagnostic procedure per the stored DTC. GO TO: ENGINE DTC TABLES or TRANSMISSION DTC TABLES .
5	FAULT: intermittent or a sporadic condition. CHECK: suspected components. PERFORM: Visual Inspection of wiring and components. CHECK: wiring for open, high resistance, short or electrical connector for damage, corrosion, loose or broken terminals. REPAIR: faulty wiring or connector.	Perform a road test to verify the repair. Generate readiness code. Refer to READINESS CODE .