Engine Control Module

The ECM is installed in the front passenger side of the engine compartment, on a bracket attached to the engine bulkhead.

The ECM has the capability of adapting its fuel and ignition control outputs in response to several sensor inputs.

The ECM receives inputs from the following:

• CKP sensor.
• CMP (camshaft position) sensors (4 off).
• ECT (engine coolant temperature) sensors (2 off).
• Knock sensors (4 off).
• MAP (manifold absolute pressure) sensor.
• MAFT sensors (2 off).
• Throttle position sensor.
• Heated oxygen sensors (4 off).
• APP sensor.
• Ambient air temperature sensor.
• FRP (fuel rail pressure) sensor.

  Refer to COMPONENT DESCRIPTION (Description and Operation).

• Engine cooling fan.

  Refer to ELECTRIC COOLING FAN (Description and Operation).

• Stoplamp switch.

  Refer to ANTI-LOCK CONTROL - STABILITY ASSIST (Description and Operation).

• Speed control cancel/suspend switch.

  Refer to SPEED CONTROL - V8 5.0L PETROL/V8 S/C 5.0L PETROL (Description and Operation).

• Oil level and temperature sensor.

  Refer to Oil Level and Temperature Sensor under LUBRICATION SYSTEM .

• Fuel LP (low pressure) sensor.

  Refer to FUEL PRESSURE SENSOR - LOW PRESSURE (LP) FUEL SYSTEM (Description and Operation).

• Fuel pump driver module.

  Refer to FUEL PUMP DRIVER MODULE (FPDM) (Description and Operation).

  The ECM provides outputs to the following:

• Electronic throttle.
• Main relay.
• Heater elements of the heated oxygen sensors (4 off).
• Fuel injectors (8 off).

  Refer to COMPONENT DESCRIPTION (Description and Operation).

• Ignition coils (8 off).

  Refer to:IGNITION COILS (Description and Operation).

• VCT (variable camshaft timing) solenoids (4 off).

  Refer to Variable Camshaft Timing Solenoids under VALVE TRAIN .

• Camshaft profile switching solenoids (2 off).

  Refer to Camshaft Profile Switching under VALVE TRAIN .

• Variable intake system tuning valve.

  Refer to VARIABLE INTAKE SYSTEM (Description and Operation).

• EVAP (evaporative emission) canister purge valve.

  Refer to EVAPORATIVE EMISSIONS CANISTER PURGE VALVE (Description and Operation).

• Engine starter relay.

  Refer to ENGINE STARTER RELAY COMPONENT DESCRIPTION (Description and Operation).

• Engine cooling fan.

  Refer to ELECTRIC COOLING FAN (Description and Operation).

• Generator.

  Refer to GENERATOR (Description and Operation).

• HP fuel pumps.

  Refer to HIGH PRESSURE FUEL PUMPS (Description and Operation).

• Fuel pump driver module.

  Refer to FUEL PUMP DRIVER MODULE (FPDM) (Description and Operation).

• DMTL (diagnostic module - tank leakage).

  Refer to DIAGNOSTIC MODULE TANK LEAKAGE (DMTL) PUMP - (NAS ONLY) (Description and Operation).