2WD. 4.6. 5.4 Liter. California. federal. A module in a vehicle used to monitor and control many components of the vehicle's engine management system. Calif. Catch Code-SMZ2. Catch Code-SMZ3. Catch Code-VCC2. From 04/18/2006. From 08/08/05. From 12/05/2005. To 04/18/2006. ECC. Engine Control Computer. Engine Control Module (ECM). Engine Control Unit (ECU). General Purpose Embedded Control Unit. MODULE - ENGINE CONTROL - EEC. PCM. Powertrain Control Module.