Diagnostic Strategy: Diagnostics

• Carry out On-Board Diagnostic procedures key on/engine off (KOEO) and key on/engine running (KOER).
• Record all DTCs.
• Repair all non-transmission codes first.
• Repair all transmission codes second.
• Erase all continuous codes and attempt to repeat them.
• Repair all continuous codes.
• If only pass codes are obtained, go to Diagnosis By Symptom  for additional information and diagnosis.

Follow the diagnostic sequence to diagnose and repair the concern the first time.