Flow of Diagnosis

Flow Chart:

1. Verify customer complaint. It is important that you get an accurate description of the problem. What condition is the engine under when the problem occurs. Verify the complaint by road testing. For further description use DRIVEABILITY WORKSHEET and VEHICLE REPAIR HISTORY forms in INFO TYPE/TECHNICAL MANAGEMENT SUPPORT.

2. Visually check all ignition related components. Check for loose connections at terminals and worn wires.

3. Check TSB's for any aids in diagnosis and testing and warranty and recall information.

4. Perform Self-Diagnostics to extract codes. Refer to COMPUTERIZED ENGINE CONTROLS for Diagnostic Routines and code extraction procedures.

5. Refer to Powertrain Management/Ignition System/Testing and Inspection/Procedures/Hard Fault Index for ignition related codes, symptoms, and action to take.