Engine Control Module: Service and Repair

Powertrain Control Module (PCM)













Removal

NOTE: Please advise the customer that this vehicle is equipped with an adaptive transmission shift strategy which allows the vehicle's computer to learn the transmission's unique parameters and improve shift quality. When the adaptive strategy is reset, the computer will begin a re-learning process. This re-learning process may result in firmer than normal upshifts and downshifts for several days.

1. NOTE: Refer to Computers and Control Systems Information for correct Vehicle Communication Module (VCM) hook-up procedure.
If replacing the PCM, connect the scan tool to the vehicle. Allow the scan tool to identify the vehicle and obtain configuration data.

- All programmable module information will automatically be retrieved by the VCM (Vehicle Communication Module).

2. Disconnect the 3 PCM electrical connectors.

3. Remove the 2 nuts and position the PCM wiring harness support bracket aside.

4. Remove the PCM.

Installation

1. Position the PCM.

2. Position the PCM wiring harness support bracket and install the 2 nuts.
- Tighten to 7 Nm (62 lb-in).

3. Connect the 3 PCM electrical connectors.

4. NOTE: If the Programmable Module Installation (PMI) procedure was not successful in downloading the data from the vehicles original PCM, then the oil life data of the vehicle is lost. If this occurs, and the oil life cannot be determined through service history or customer interview, it is recommended the vehicle engine oil and filter be changed and the oil change minder reset.
If the PCM is being replaced, the parameters must be reset. For additional information, refer to Passive Anti-Theft System (PATS) Parameter Reset in Antitheft and Alarm Systems.

5. If the PCM is being replaced, use the scan tool to perform the Misfire Monitor Neutral Profile Correction procedure, following the on-screen instructions.