4R100

Carry out On-Board Diagnostics
After a road test, with the vehicle warm and before disconnecting any connectors, carry out the Quick Test using the scan tool.

Diagnostics
^ Carry out on-board diagnostic procedures key on engine off (KOEO) and key on engine running (KOER).
^ Record all diagnostic trouble codes (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 which reappear.
^ If only pass codes are obtained, proceed to Diagnosis By Symptom for further information and diagnosis. 4R100

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