Engine Control Module: Service and Repair

NGC Controller Location:

REMOVAL

USE THE DRBIII(R) SCAN TOOL TO REPROGRAM THE NEW PCM WITH THE VEHICLES ORIGINAL IDENTIFICATION NUMBER (VIN) AND THE VEHICLES ORIGINAL MILEAGE. IF THIS STEP IS NOT DONE A DIAGNOSTIC TROUBLE CODE (DTC) MAY BE SET.

The PCM engine control strategy prevents reduced idle speeds until after the engine operates for 320 km (200 miles). If the PCM is replaced after 320 km (200 miles) of usage, update the mileage and vehicle identification number (VIN) in the new PCM. Use the DRBIII(R) scan tool to change the mileage and VIN in the PCM. If this step is not done a diagnostic trouble code (DTC) may be set and SKIM must be done or car will not start if it is a SKIM equipped car. If a SKIM car you must do a secret key transfer also. Refer to the appropriate Powertrain Diagnostic Manual and the DRBIII(R) scan tool.

To avoid possible voltage spike damage to PCM, ignition key must be off, and the negative battery cable must be disconnected before unplugging the PCM connectors. Note radio programs.

1. Unbolt the washer bottle filler neck and reposition.
2. Disconnect the 4 PCM electrical connector.

Fig.7 NGC Connectors:

3. Reposition wiring harness out of the way.

Fig.8 NGC Mounting:

4. Remove the 3 fasteners from PCM mounting.

Fig.9 NGC Controller:

5. Remove PCM.

INSTALLATION

The PCM engine control strategy prevents reduced idle speeds until after the engine operates for 320 km (200 miles). If the PCM is replaced after 320 km (200 miles) of usage, update the mileage and vehicle identification number (VIN) in the new PCM. Use the DRBIII(R) scan tool to change the millage and VIN in the PCM. If this step is not done a diagnostic trouble code (DTC) may be set and SKIM must be done or car will not start if it is a SKIM equipped car. If a SKIM car you must do a secret key transfer also. Refer to the appropriate Powertrain Diagnostic Manual and the DRBIII(R) scan tool.

1. Install PCM. Tighten bolt to 4 N.m (35 in. lbs.) torque.
2. Reposition wiring harness.
3. Connect the 4 PCM electrical connector.
4. Reposition the washer bottle filler neck and install the bolt.
5. Connect negative battery cable and reprogram radio and clock.
6. Using DRBIII(R) scan tool, program mileage and vehicle identification number (VIN) into PCM. Refer to the DRBIII(R) scan tool and the appropriate Powertrain Diagnostic Manual.