Powertrain Control Module

Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC

The Powertrain Control Module (PCM) is located on the rear corner of the engine compartment on the passenger side. The PCM is connected to the vehicle wiring harnesses via 2 connectors. The PCM contains data processors and memory microchips. The output signals to the actuators and sensors are in the form of ground paths provided by driver circuits within the PCM. The PCM driver circuits produce heat during normal operation and dissipate this heat via the ribbed casing.

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

The PCM 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
• Accelerator Pedal Position (APP) sensor
• Heated Oxygen Sensor (HO2S) (6 off)
• Ambient Air Temperature (AAT) sensor
• Exhaust back-pressure sensor (if equipped) For additional information, Refer to: GASOLINE PARTICULATE FILTER
• Fuel Rail Pressure and Temperature (FRPT) sensor For additional information, refer to: FUEL CHARGING AND CONTROLS
• Electric cooling fan For additional information, refer to: ENGINE COOLING
• Brake pedal switch For additional information, refer to: ANTI-LOCK CONTROL - STABILITY ASSIST
• Speed control switch For additional information, Refer to: SPEED CONTROL
• Oil level and temperature sensor For additional information, Refer to: ENGINE
• Fuel Pump Driver Module (FPDM) For additional information, refer to: FUEL TANK AND LINES
• Restraints Control Module (RCM) For additional information, Refer to: AIRBAG SUPPLEMENTARY RESTRAINT SYSTEM
• Transmission Control Switch (TCS) For additional information, refer to: INTAKE AIR DISTRIBUTION AND FILTERING
• Supercharger bypass valve position sensor For additional information, refer to: INTAKE AIR DISTRIBUTION AND FILTERING
• Charge air temperature sensor For additional information, refer to: INTAKE AIR DISTRIBUTION AND FILTERING
• Brake vacuum sensor. For additional information, Refer to: BRAKE BOOSTER

The PCM provides outputs to the following:

• Electric throttle
• PCM relay
• Variable oil pump For additional information, Refer to: ENGINE
• The HO2S heater element (6 off)
• Fuel injector (6 off) For additional information, refer to: FUEL CHARGING AND CONTROLS
• Active exhaust solenoid valve For additional information, refer to: EXHAUST SYSTEM
• Ignition coil (6 off) For additional information, refer to: ENGINE IGNITION
• Variable Camshaft Timing (VCT) actuator (4 off) For additional information, Refer to: ENGINE
• Evaporative emissions purge valve For additional information, refer to: EVAPORATIVE EMISSIONS
• Starter motor relay For additional information, refer to: STARTING SYSTEM
• Electric cooling fan For additional information, refer to: ENGINE COOLING
• Charge air coolant pump For additional information, refer to: SUPERCHARGER COOLING
• High Pressure (HP) fuel pump (2 off) For additional information, refer to: FUEL CHARGING AND CONTROLS
• FPDM For additional information, refer to: FUEL TANK AND LINES
• Diagnostic Module Tank Leakage (DMTL) - North American Specification (NAS) market vehicles only For additional information, refer to: FUEL TANK AND LINES
• Supercharger bypass valve actuator. For additional information, refer to: INTAKE AIR DISTRIBUTION AND FILTERING