Flow of Diagnosis

Flow Of Diagnosis:

1. Get accurate description of complaint. Road test vehicle to verify. Perform underhood inspection. For further description of complaint use DRIVEABILITY WORKSHEET AND VEHICLE REPAIR HISTORY FORMS BELOW.
VISUALLY CHECK:
- Check Engine light ON while engine is running, inoperative during cranking, or key ON engine OFF. This is an indication of a computer related failure. If computer system failure is suspected, refer to COMPUTERIZED ENGINE CONTROLS.
- Vacuum hoses for splits, kinks, and proper routing.
- Ignition wiring for cracking, hardness, and proper connections at both the distributor and spark plugs.
- All wiring for proper connections, pinches and cuts.
- Wiring harness for proper routing.
- Check for missing components.
2. Check TSB'S for manual updates, testing procedures, warranty and recall information.
3. The FUEL SYSTEM DIAGNOSIS section, located in PROCEDURES, provides a comprehensive approach to diagnosing the fuel delivery system. This test assumes that the engine is mechanically sound and the ignition system is providing a good spark at the plugs. If this is not a valid assumption, check for good spark at plugs and engine condition before proceeding. Refer to appropriate section for testing procedures.
4. See DIAGNOSIS BY SYMPTOM under PROCEDURES for symptom vehicle is exhibiting. Follow procedures as outlined for given symptom.

Driveability Worksheet:

Driveability Worksheet:

DRIVEABILITY WORKSHEET

Vehicle Repair History:

Vehicle Repair History:

VEHICLE REPAIR HISTORY