After On-Board Diagnostics

After On-Board Diagnostics

NOTE: The vehicle wiring harness, Powertrain Control Module (PCM) and non-transmission sensors may affect transmission operations. Repair these concerns 1st.

After the on-board diagnostic procedures are completed, repair all DTC's.

Begin with non-transmission related DTC's, then repair any transmission related DTC's. Refer to the Diagnostic Trouble Code Charts for information on condition and symptoms. Diagnostic Trouble Code Chart This chart will be helpful in referring to diagnosing internal transmission concerns and external non-transmission inputs. The pinpoint tests are used in diagnosing transmission electrical concerns. Make sure that the vehicle wiring harness and the PCM are diagnosed as well; Refer to Computers and Control Systems.