Powertrain On Board Diagnostic System Check - Automatic Transmission Diagnostic System Check: Notes

CAUTION: DO NOT perform Powertrain On Board Diagnostic (OBD) System Check - Automatic Transmission unless one of the concerns noted is present. Failure to follow this procedure could lead to misdiagnosis of the system.

NOTE: Powertrain On Board Diagnostic (OBD) System Check - Automatic Transmission is intended for use in diagnosing a concern in a vehicle with separate Engine Control Module (ECM) and Transmission Control Module (TCM).