Engine Control Module (ECM) Replacement

ECM With Mem-Cal Access Cover.:

Mem-Cal Removal.:

Mem-Cal Installation.:

When replacing a production ECM with a service ECM, transfer the broadcast code and production number from the production unit to the service unit. Also, during replacement, the Mem-Cal must be removed from the ECM being replaced and transferred to the new unit.

1. Disconnect battery ground cable.
2. Then disconnect four computer electrical connectors.
3. Remove computer mounting hardware.
4. Remove computer from passenger compartment.
5. Reverse procedure to install.