Grand Caravan V6-3.8L VIN L (2007)
Engine Control Module: Description and Operation
Description
Description
DESCRIPTION
The Powertrain Control Module (PCM) is a digital computer containing a microprocessor (Figure 1). The PCM receives input signals from various
switches and sensors referred to as Powertrain Control Module Inputs. Based on these inputs, the PCM adjusts various engine and vehicle operations
through devices referred to as Powertrain Control Module Outputs.
Figure 1 Powertrain Control Module (PCM)
NOTE: PCM Inputs:
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Air Conditioning Pressure Transducer
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Ambient temperature Sensor
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ASD Relay
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Battery Temperature Sensor (NGC)
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Battery Voltage
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Brake Switch
-
Camshaft Position Sensor
-
Crankshaft Position Sensor
-
Distance Sensor (from transmission control module)
-
EGR Position Feedback
-
Engine Coolant Temperature Sensor
-
Heated Oxygen Sensors
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Ignition sense
-
Intake Air Temperature Sensor
-
Knock Sensor
-
Leak Detection Pump Feedback
-
Manifold Absolute Pressure (MAP) Sensor
-
Park/Neutral
-
PCI Bus
-
Power Steering Pressure Switch
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Proportional Purge Sense
-
SCI Receive