Engine Control Module: Service and Repair

Computer:

When replacing a production Computer with a service Computer, transfer the broadcast code and production number from the production unit to the service unit. Also during replacement, the PROM, CALPACK, and if equipped, the MEMCAL must be removed from the Computer being replaced and transferred to the new unit. Refer to PROM, CALPACK and MEMCAL for replacement procedures.

1. Disconnect battery ground cable.
2. Coolant tank reservoir.
3. ECM mounting hardware.
4. Connectors from the ECM.
5. ECM from the engine compartment.
6. Reverse procedure to install.
7. Before starting engine perform IDLE LEARN PROCEDURE. Refer to ADJUSTMENT PROCEDURES/IDLE LEARN PROCEDURE.