Engine Control Module (ECM)

ENGINE CONTROL MODULE (ECM)





The ECM (engine control module) is located in the E-Box on the RH (right-hand) side of the engine compartment at the front.

System ECM (engine control module) has the following inputs:
^ RCM (restraints control module)
^ Park/neutral switch
^ Ignition coil feedback x2
^ Fuel rail temperature
^ Mass air flow/intake air temperature
^ Engine speed
^ Intake cam position
^ Driver demand
^ Brake pedal switch
^ Generator load
^ UHEGO
^ HEGO
^ Throttle position
^ Cooling fan speed
^ Ignition switch position
^ Knock sensors
^ MAP (manifold absolute pressure) sensor
^ Coolant temperature
^ Engine oil temperature

The ECM (engine control module) outputs to the following:
^ Throttle actuator
^ Brake vacuum pump relay
^ Ignition coils (x8)
^ Oxygen sensor heaters (4)
^ Fuel injectors (8)
^ EGR (exhaust gas recirculation) valve
^ Variable Valve Timing Oil Valves (2)
^ Purge valve
^ Engine cooling fan
^ Fuel pump relay
^ Starter relay
^ EMS Main relay
^ Diagnostic Module Tank Leakage (DMTL) (NAS Only)
^ E-box fan

ECM (engine control module) ADAPTIONS
The ECM (engine control module) has the ability to adapt the values it uses to control certain outputs. This capability ensures the EMS can meet emissions legislation and improve the refinement of the engine throughout its operating range.

The components which have adaptions associated with them are:
^ The APP (accelerator pedal position) sensor
^ The HO2S
^ The MAF (mass air flow) /IAT (intake air temperature) sensor
^ The CKP (crankshaft position) sensor
^ Electric throttle body.