Engine Control Module (ECM)

WARNING: This page is about a different car, the 2017 Jaguar XJ, 2016 Jaguar XJ, 2015 Jaguar XJ, 2014 Jaguar XJ, and 2013 Jaguar XJ. However, it is still accessible from the selected car via links, so may be relevant.

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:

Crankshaft Position (CKP) sensor
Camshaft Position (CMP) sensor (4 off)
Engine Coolant Temperature (ECT) sensor (2 off)
Knock sensor (2 off)
Manifold Absolute Pressure (MAP) sensor
Mass Air Flow and Temperature (MAFT) sensor (2 off)
Manifold Absolute Pressure and Temperature (MAPT) sensor
Throttle position sensor
Heated Oxygen Sensor (HO2S) (6 off)
Accelerator Pedal Position (APP) sensor
Ambient Air Temperature (AAT) sensor
Fuel Rail Pressure and Temperature (FRPT) sensor.
Refer to: V8 5.0L Petrol Description and Operation .
Engine cooling fan.
Refer to: V6 S/C 3.0L Description and Operation .
Brake pedal switch.
Refer to: Anti-Lock Control - Stability Assist .
Speed control cancel/suspend switch.
Refer to: Speed Control - V6 S/C 3.0L Petrol .
Oil level and temperature sensor.
Refer to: OIL LEVEL AND TEMPERATURE SENSOR .
Fuel Low Pressure (LP) sensor.
Refer to: FUEL PRESSURE SENSOR - LOW PRESSURE (LP) FUEL SYSTEM .
Fuel Pump Driver Module (FPDM).
Refer to: FUEL PUMP DRIVER MODULE (FPDM) .

The ECM provides outputs to the following:

Electric throttle.
Main EMS relay.
Heated Oxygen Sensor (HO2S) (4 off).
Fuel injectors (6 off).
Refer to: FUEL INJECTORS .
Ignition coils (6 off).
Refer to: IGNITION COILS .
Variable camshaft timing (VCT) solenoids (4 off).
Refer to: VARIABLE CAMSHAFT TIMING (VCT) .
Evaporative emissions canister purge valve.
Refer to: Purge Valve .
Engine starter relay.
Refer to: Engine starter relay .
Engine cooling fan.
Refer to: Electric Cooling Fan .
Intercooler water pump relay.
Refer to: Supercharger Cooling - System Operation And Component Description (G1772512) .
Generator.
Refer to: Generator .
High Pressure (HP) fuel pumps.
Refer to: High Pressure Fuel Pumps .
Fuel Pump Driver Module (FPDM).
Refer to: Fuel Pump Driver Module (FPDM) .
Diagnostic Module Tank Leakage (DMTL).
Refer to: System Operation And Component Description .