Engine Control Module: Description and Operation

Electronic Engine Controls

ENGINE CONTROL MODULE (ECM)

Engine Control Module (ECM):

The ECM and bracket assembly are attached to the vehicle on the left hand side in the secondary bulkhead area using 3 m6 nuts, 2 off onto the longitudinal and 1 off to the wheel arch apron panel.

System ECM has the following inputs:
- RCM
- Park/neutral switch
- Ignition coil feedback x8
- Fuel rail temperature
- Fuel rail pressure
- Supercharger inlet pressure
- Mass air flow
- Engine speed
- Camshaft position x2
- Driver demand
- Brake pedal position switch
- Speed control switches
- Generator load
- Oxygen sensors pre catalyst x2
- Oxygen sensors post catalyst x2
- Throttle position
- Cooling fan speed
- Ignition switch position
- Knock sensors x2
- Manifold Absolute pressure (MAP)
- Intercooler temperature
- Coolant temperature
- Engine oil temperature

The ECM outputs to the following:
- Electric throttle Actuator
- Brake vacuum pump relay
- Ignition coils (x8)
- Oxygen sensor heaters (4)
- Fuel injectors (8)
- Purge Valve
- Engine Cooling Fan
- Fuel pump relay
- Starter Relay
- EMS Main Relay
- Electric Fan Control
- Generator Control
- Fuel tank leakage monitoring (NAS Only)
- Fuel Pump Driver Module (FPDM)