The Powertrain Control Module abbreviated as PCM is positioned in the engine area. PCM is also mentioned as JTEC which is Jeep/Truck Engine Controller. It is just a per-programmed triple microprocessor digital computer. The procedure of fuel system, regulating déflagration timing, air-fuel ratio, emission control devices, several transmission features, charging system, control of speed, air conditioning air compressor, 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 procedures are regulated through different system components by using PCM. All of these components are specified as Powertrain Control Module (PCM) Outputs. The switches and sensors which provide inputs to the PCM are known as Powertrain Control Module (PCM) Inputs.
The PCM assists with adjusting ignition timing which is based after the inputs it receives from the receptors which react to engine rpm, engine coolant heat, manifold absolute pressure, transmitting gear selection (automatic transmission), throttle position, brake swap and the speed of vehicle. PCM helps in adjusting the idle speed which is dependent on inputs, which it gets from the sensors.