After On-Board Diagnostic (OBD)
WARNING: This page is about a different car, the 2014 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The vehicle wiring harness, PCM and non-transmission sensors may affect transmission operations. Repair these concerns first.
Repair all DTCs after the On-Board Diagnostic (OBD) test procedures are completed.
Begin with non-transmission related DTCs , then repair transmission related DTCs . Use the DTC Chart for information on condition and symptoms. This chart is helpful in referring to the correct manual(s) and aids in diagnosing internal transmission concerns and external non-transmission inputs. The pinpoint tests are used in diagnosing transmission electrical concerns. Diagnosis the vehicle wiring harness and the PCM as well. The ENGINE CONTROLS - INTRODUCTION (EXCEPT DIESEL & HYBRID) (SECTION 0) aids in diagnosing non-transmission electronic components.