Symptom Charts

All diagnosis begins in the SYMPTOM CHARTS article with QT Step 1: Powertrain Control Module (PCM) Quick Test. If the PCM Quick Test is completed and no diagnostic trouble codes (DTCs) are retrieved, the technician is directed to Step 2: No Diagnostic Trouble Codes (DTCs) Present Symptom Chart Index. The No Diagnostic Trouble Codes (DTCs) Present Symptom Chart Index contains the list of symptoms addressed and directs the technician to the appropriate Step 3: No Diagnostic Trouble Codes (DTCs) Present Symptom Chart. If no PCM DTCs are present and the vehicle symptom is not listed in Step 2: No Diagnostic Trouble Codes (DTCs) Present Symptom Chart Index, the technician should go to the appropriate service information article to continue diagnosis.