Before Pinpoint Tests

WARNING: This page is about a different car, the 2009 Mercury Milan and 2009 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Read and record all DTCs.

NOTE: Before entering pinpoint tests, check the transaxle, vehicle, TCM and PCM wiring harnesses for correct connections, bent or broken pins, corrosion, loose wires, correct routing, correct seals and their condition. Check the PCM, sensors and actuators for damage. Refer to the Introduction - Gasoline Engines article.

After the On-Board Diagnostic (OBD) procedures are completed, repair all DTCs.

Begin with non-transaxle related DTCs, then repair any transaxle-related DTCs. Refer to Diagnostic Trouble Code (DTC) Charts for information on condition and symptoms. This chart will be helpful in referring to the correct article(s) and aids in diagnosing internal transaxle concerns and external non-transaxle inputs. The pinpoint tests are used in diagnosing transaxle electrical concerns. Make sure that the vehicle wiring harness and the PCM are diagnosed as well. The Introduction - Gasoline Engines article will aid in diagnosing non-transaxle electronic components.