Engine Control Module

Courtesy of JAGUAR CARS, INC.

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

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

The engine control module (ECM) receives inputs from the following:

• Crankshaft position (CKP) sensor.
• Camshaft position (CMP) sensors (4 off).
• Engine coolant temperature (ECT) sensors (2 off).
• Knock sensors (4 off).
• Manifold absolute pressure (MAP) sensor.
• Mass air flow and temperature (MAFT) sensors (2 off).
• Throttle position sensor.
• Heated oxygen sensors (4 off).
• Accelerator pedal position (APP) sensor.
• Ambient air temperature sensor.
• Fuel rail pressure (FRP) sensor. For additional information, refer to 303-04F Fuel Charging and Controls.
• Engine cooling fan. For additional information, refer to 303-03D Engine Cooling.
• Stoplamp switch. For additional information, refer to 206-09 Anti-Lock Control - Stability Assist.
• Speed control cancel/suspend switch. For additional information, refer to 310-03D Speed Control.
• Oil level and temperature sensor. For additional information, refer to 303-01E Engine.
• Fuel LP (low pressure) sensor. For additional information, refer to 310-01D Fuel Tank and Lines.
• Fuel pump driver module. For additional information, refer to 310-01D Fuel Tank and Lines.

The engine control module (ECM) provides outputs to the following:

• Electronic throttle.
• Main relay.
• Heater elements of the heated oxygen sensors (4 off).
• Fuel injectors (8 off). For additional information, refer to 303-04F Fuel Charging and Controls.
• Ignition coils (8 off). For additional information, refer to 303-07C Engine Ignition.
• Variable camshaft timing (VCT) solenoids (4 off). For additional information, refer to 303-01B Engine.
• Camshaft profile switching solenoids (2 off). For additional information, refer to 303-01E Engine.
• Variable intake system tuning valve. For additional information, refer to 303-12E Intake Air Distribution and Filtering.
• Evaporative emission (EVAP) canister purge valve. For additional information, refer to 303-13C Evaporative Emissions.
• Engine starter relay. For additional information, refer to 303-06D Starting System.
• Engine cooling fan. For additional information, refer to 303-03D Engine Cooling.
• Generator. For additional information, refer to 414-02D Generator and Regulator.
• HP fuel pumps. For additional information, refer to 303-04F Fuel Charging and Controls.
• Fuel pump driver module. For additional information, refer to 310-01D Fuel Tank and Lines.
• DMTL (diagnostic module - tank leakage). For additional information, refer to 303-13C Evaporative Emissions.