Toyota
Ford Kuga
 Service Manual
Electronic Engine Controls » Electronic Engine Controls (Overview)
Powertrain Control Module (PCM)

Powertrain Control Module (PCM)

The PCM communicates with all engine sensors and the other modules. Communication of the PCM with the other modules and the system diagnostics takes place via the CAN (controller area network) data bus.

The following functions are regulated or controlled by the PCM:

  • Fuel supply to the engine including lambda control
  • Ignition setting including knock control
  • Idle speed control
  • Control of optimum valve timing via the camshaft adjustment for intake and exhaust camshafts
  • The refrigerant compressor is controlled by the air conditioning clutch relay and the delivery of the refrigerant compressor is controlled by a PWM (pulse width modulation) signal.
  • Control of EVAP purge valve
  • Boost pressure control
  • Control of the cooling fan
  • Charging system (Smart Charge)
  • Starting system (Smart Start)

If the PCM is isolated from the vehicle electrical system or the battery is disconnected, the throttle control unit must be initialized.

The PCM is fitted in the engine compartment in the air filter housing. On right hand drive vehicles a protective metal plate is also installed to prevent the plug connector from being pulled off, or make it harder to pull off, in case of theft. The protective plate is secured with a shear bolt. The shear bolt needs to be drilled out in order to remove the protective plate.

    More about «Electronic Engine Controls (Overview)»:

    General overview

    Powertrain Control Module (PCM)

    Knock Sensor

    Crankshaft Position (CKP) sensor

    Camshaft adjuster solenoid valve

    Manifold absolute pressure and temperature sensor

    Accelerator pedal position (APP) sensor

    Throttle control unit

    Engine Coolant Temperature (ECT) sensor

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