Crossfire SRT-6 V6-3.2L SC VIN N (2005)
Engine Control Module: Description and Operation
Powertrain Control Module
The Powertrain Control Module (1) is concealed in the engine compartment inside the Control Module Box (2) located next to the Battery (3).
The Powertrain Control Module utilizes integrated circuitry and information carried on the Controller Area Network (CAN) data bus along with many
hard wired inputs to monitor many sensor and switch inputs throughout the vehicle.
In response to those inputs, the internal circuitry and programming of the Powertrain Control Module allow it to control and integrate many electronic
functions and features of the vehicle through both hard wired outputs and the transmission of electronic message outputs to other electronic modules in
the vehicle over the CAN data bus.
The Powertrain Control Module for this model is serviced only as a complete unit. A Powertrain Control Module can only be repaired by, or replaced
through an authorized electronic warranty repair station. Refer to the latest version of the warranty policies and procedures manual for a current listing of
authorized electronic repair stations.
The Powertrain Control Module is a pre-programmed, microprocessor-based digital computer. It regulates ignition timing, air-fuel ratio, emission control
devices, charging system, certain transmission features, speed control, air conditioning compressor clutch engagement and idle speed. The Powertrain
Control Module can adapt its programming to meet changing operating conditions.
The Powertrain Control Module receives input signals from various switches and sensors. Based on these inputs, the Powertrain Control Module
regulates various engine and vehicle operations through different system components. These components are referred to as Powertrain Control Module
outputs. The sensors and switches that provide inputs to the Powertrain Control Module are considered Powertrain Control Module inputs.
The Powertrain Control Module adjusts ignition timing based upon inputs it receives from sensors that react to: engine rpm, manifold absolute pressure,
engine coolant temperature, throttle position, transmission gear selection (automatic transmission), vehicle speed and the brake switch.
The Powertrain Control Module adjusts idle speed based on inputs it receives from sensors that react to: throttle position, vehicle speed, transmission
gear selection, engine coolant temperature and from inputs it receives from the air conditioning clutch switch and brake switch.
Based on inputs that it receives, the Powertrain Control Module adjusts ignition timing. The Powertrain Control Module also adjusts the generator
charge rate through control of the generator field and provides speed control operation.
