The Powertrain Control Module abbreviated as PCM is positioned in the engine area. PCM is also described as JTEC which is Jeep/Truck Engine Controller. This can be a per-programmed triple microprocessor digital computer. The procedure of fuel system, regulating combustion timing, air-fuel ratio, release control devices, several tranny features, charging system, power over speed, air conditioning converter, clutch engagement and the dead speed, all of them are operated by the PCM. It is an important component.
The input signals from different switches and sensors are sent to the Jeep PCM. Various engine and vehicle functions are regulated through different system components by making use of PCM. All of these components are specified as Powertrain Control Module (PCM) Outputs. The switches and sensors which provide advices to the PCM are known as Powertrain Control Module (PCM) Inputs.
The PCM can be useful for adjusting ignition timing which is structured after the inputs it receives from the receptors which react to engine rpm, engine coolant temperature, manifold absolute pressure, transmission gear selection (automatic transmission), throttle position, brake change and the speed of vehicle. PCM helps in adjusting the idle rate which is founded on inputs, which it gets from the sensors.Jeep ECM
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