FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

Diagnostic Notes (Read Before Proceding)


The customer complaint will tell you which test to use. Only use that category. Do not be concerned about the actual symptom. Since one or more of the engine control systems can produce the same symptom, just find out when the engine did not run right.

The following are the recommended categories that should be used:
1. Engine Will Not Start
a. Visual Inspection
b. No Start Test
2. Cold Driveability Problem
a. Visual Inspection
b. Driveability Tests
3. Warm Driveability Problem
a. Visual Inspection
b. Driveability Tests
4. Power Loss or Power Limit Lamp On
a. Visual Inspection
b. Driveability Tests
5. Charging System Problem
a. Visual Inspection
b. Charging System Tests
6. Speed Control System Problems
a. Visual Inspection
b. Speed Control System Tests