General Diagnostic Information

The procedures contained in this database include all the specifications, instructions, and graphics needed to diagnose Powertrain Control Module (PCM) and Engine Control Module (ECM) problems; they are No Start (NS), Diagnostic Trouble Code (DTC), and No Trouble Code (NTC). The diagnostics in this manual are based on the trouble condition or symptom being present at the time of diagnosis. When repairs are required, refer to the appropriate Service and Repair article.