Preliminary Check

NOTE:

Before performing any pin point test or component diagnosis, a Preliminary Check must be performed.

Check for Technical Bulletins that may supersede included in the repair information or GST information.

Step	Procedure	Result / Action to Take
1	CONNECT: Scan Tool IGNITION: ON CHECK: for stored or related DTCs. -- Were any other DTCs stored?	YES: GO TO: Step 2 NO: GO TO: Step 3
2	Repair these DTCs first before performing any of the following steps.	GO TO: Proper Diagnostic procedure per the stored DTC ENGINE DTC TABLES
3	Using the scan tool, erase the DTC memory. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY Perform a road test to attempt to duplicate the customers concern. -- Does DTC return?	YES: GO TO: Step 4 NO: GO TO: Step 5
4	Perform the diagnostic procedure for that DTC.	GO TO: Proper Diagnostic procedure per the stored DTC, DIAGNOSTIC PROCEDURES
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 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 CODES