A power-train control module, abbreviated PCM, is an automotive component, a control unit, used on motor vehicles. It is generally a combined controller consisting of the engine control unit (ECU) and the transmission control unit (TCU). On some cars, such as many Chryslers, there are multiple computers: the PCM, the TCU, and the Body Control Module (BCM), for a total of three separate computers. These automotive computers are generally very reliable. The PCM commonly controls more than 100 factors in a car or truck. There are many hundreds of error codes that can occur, which indicates that some subsection of the car is experiencing a problem. When one of these errors occurs, usually it will turn on the "check engine" light on the dashboard. The PCM is one of potentially several on-board computers, or essentially the "brain" of the engine control system.[1]
The primary inputs to the PCM come from many sensors, of different types, that are spread around the car. Most of them are oriented toward engine management and performance. These sensors fail at a much higher rate than any of the computers do.
Early use of the powertrain control module dates back to the late 1970s[citation needed] - official phasing in[clarification needed] of the PCM occurred during the early 1980s when used in conjunction with electronic controlled carburetors and lockup torque converters (at the time conventional 3-speed automatics received lockup converters at the same time overdrives were introduced[citation needed]).
^"Powertrain Control Module (PCM)". AA1Car. Retrieved 2014-12-20.
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much higher rate than any of the computers do. Early use of the powertraincontrolmodule dates back to the late 1970s[citation needed] - official phasing...
(OBD) Powertraincontrolmodule (PCM) "How an Automotive Computer Works". www.2carpros.com. Retrieved 14 May 2023. "Toyota Prius - Engine Control Systems"...
applications, the TCU and the ECU are combined into a single unit as a powertraincontrolmodule (PCM). The typical modern TCU uses signals from engine sensors...
towards the front of the engine near the camshaft phasers. The powertraincontrolmodule (PCM) transmits a signal to the solenoids to move a valve spool...
of the ignition coil assembly, Camshaft Position Sensor (CMP), PowertrainControlModule (PCM), spark plug wires and spark plugs. The Beta engine family...
oxygen in the exhaust gases and this information is sent to 32-bit powertraincontrolmodule (PCM), which continuously optimizes the air/fuel mix There were...
throttle body (increased from 48 mm to 52 mm), a revised PCM (powertraincontrolmodule), simplified and shortened intake ducting, a revised intake manifold...
(GM) where he managed the team that designed and integrated the powertraincontrolmodule for all of GM's platforms. In 2006, he became the senior vice...
or integrated with the PowertrainControlModule (PCM). The TCM uses data from various transmission and engine sensors to control transmission shifting...
present in the intake manifold relative to the outside air) the powertraincontrolmodule (PCM) will open the EGR valve and then monitor the MAP sensor's...
braking. Downshifts in all modes of operation include the PowertrainControlModule electronic control unit (ECU) "blipping" the Bosch "E-Gas" drive by wire...
Variable Cam Timing (Ti-VCT) in a V8 engine, which allows the powertraincontrolmodule (PCM) to advance and retard intake and exhaust cam timing independently...
exclusively front-wheel drive whenever 4WD is not commanded by the powertraincontrolmodule or the driver. The transaxle supplies power to the rear drive...
000 Mazda vehicles using the engine were recalled for a faulty powertraincontrolmodule that may cause a misfire or a loss in power. The turbocharged...
a new engine control computer was developed for vehicles powered by Magnum engines, known as the JTEC. The new PowertrainControlModule was more complex...
manual-transmission model LS after 2,331 were manufactured. The powertraincontrolmodule in 2000 through 2002 automatic transmission models with the SelectShift...
Transmission Direct-control automatic transmission is controlled by PCM (PowertrainControlModule) for smooth shifting Cruise control is controlled by PCM and...
to the 3400 V6. The 3500 V6 featured an updated powertraincontrolmodule, electronic throttle control, fuel injection system, exhaust manifold, catalytic...
S-series was also the first Saturn to use the body controlmodule (BCM), and the powertraincontrolmodule (PCM) systems in tandem with each other. In the...
system) software is EMS-II from Siemens VDO and the 32-bit PCM (PowertrainControlModule) calculates the amount of intake air by utilizing a contamination-proof...
electronically controlled four-speed automatic. A virtual "turbo boost" button on the steering wheel activates the powertraincontrolmodule to trigger a...
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