After On-Board Diagnostics

WARNING: This page is about a different car, the 2003 Mercury Sable and 2003 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: The vehicle wiring harness, powertrain control module and non- transaxle sensors can affect transaxle operations. Repair these concerns first.

After the on-board diagnostic procedures are completed, repair all DTCs.

Begin with non-transaxle related DTCs, then repair any transaxle-related DTCs. Refer to DIAGNOSTIC TROUBLE CODE CHARTS for information on Conditions and Symptoms. This chart will be helpful in referring to the correct manual(s) and to aid in diagnosing internal transaxle concerns and external non- transaxle inputs. The pinpoint tests are used in diagnosing electrical concerns of the transaxle. Make sure that the vehicle wiring harness and the PCM are diagnosed as well. The SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article will aid in diagnosing non-transaxle electronic components. The diagnostic routine hydraulic/mechanical charts will help in diagnosing internal transaxle concerns and external non-transaxle inputs.