Diagnostic Strategies

VEHICLE PREPARATION FOR TESTING
Make sure the vehicle being tested has a fully charged battery. If it does not, false diagnostic codes or error messages may occur.


SIX-STEP TROUBLESHOOTING PROCEDURE
Diagnosis of the body system is done in six basic steps:
- Verification Of Complaint
- Verification Of Any Related Symptoms
- Symptom Analysis
- Problem Isolation
- Repair Of Isolated Problem
- Verification Of Proper Operation