Ecu

[1310]

hello

 

could any one tell me what the ecu is and how to get to it and remove it

 

many thanks

[Chris Young]

An Engine Control Unit (ECU) also known as an Engine Control Module (ECM) or Powertrain Control Unit/Module (PCU, PCM) if it controls both an engine and a transmission, is an electronic control unit which controls various aspects of an internal combustion engine's operation. The most simple ECUs simply control the quantity of fuel injected into each cylinder each engine cycle. More advanced ECUs found on most modern cars also control the ignition timing, Variable Valve Timing (VVT), the level of boost maintained by the turbocharger (in turbocharged cars), and control other peripherals.

 

ECUs determine the quantity of fuel, ignition timing and other parameters by monitoring the engine through sensors. These can include, MAP sensor, throttle position sensor, air temperature sensor, oxygen sensor and many others.

 

Before ECUs most engine parameters were fixed. The quantity of fuel per cylinder per engine cycle was determined by a carburetor or injector pump.

 

I think it is located in the dash panel behind the instrument cluster.

Edited July 31, 2007 by Chris Young

[insider]

I think it is located in the dash panel behind the instrument cluster.

 

... or if you're lucky and don't have a 2.3 then it's in the engine bay and much easier to get at than taking the top facia panel off.