Diagnostic Strategy: Diagnostics

• Carry out OBD test procedures, KOEO and KOER self-tests.
• Record all DTCs.
• Repair all non-transmission codes first.
• Repair all transmission codes second.
• Clear all continuous codes and attempt to repeat them.
• Repair all continuous codes.
• If only pass codes are obtained, refer to DIAGNOSIS BY SYMPTOM  for further information and diagnosis.

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