Town & Country V6-3.8L (2009)
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Battery Voltage
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Coolant Temperature
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Intake Air Temperature
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Exhaust Gas Content (Oxygen Sensor)
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Engine Speed (Crankshaft Position Sensor)
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Manifold Absolute Pressure
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Mass Airflow Sensor
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Throttle Position Sensors and Pedal Value Sensors
IGNITION TIMING
The PCM adjusts ignition timing based on the following inputs:
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Coolant Temperature
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Intake Air Temperature
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Engine Speed (Crankshaft Position Sensor)
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Manifold Absolute Pressure
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Mass Airflow Sensor
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Throttle Position Sensors and Pedal Value Sensors
PCM SENSOR OUTPUTS
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ASD Relay
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Air Conditioning Clutch Relay
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Alternator Field Control
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CAN-C for Inter Module Communication AND Data Link Connector
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Electronic Throttle Control (ETC) motor
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Purge Solenoid
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O2 Heater Control Outputs
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Fuel Injectors
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Fuel Pump Relay
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Ignition Coils
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SRV actuator (if equipped)
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Transmission Solenoids
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Transmission (EATX) relay
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Two Fan Relays via CAN C bus message to TIPM
5 VOLT SUPPLY
There are two independent regulated 5 volt circuits in this vehicle. A primary and a secondary (auxiliary) 5V supply that feeds various sensors AND
devices.
PRIMARY CIRCUITS
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Crankshaft Position Sensor
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Throttle Position Sensors #1 AND #2
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Pedal Value Sensor #1
SECONDARY CIRCUITS
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Camshaft Position Sensor
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EGR position feedback sensor
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MAP sensor
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Pedal Value Sensor #2
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SRV position feedback sensor
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Variable Line Pressure Sensor
PCM GROUND
Grounds are provided through multiple pins of the PCM connector. There are 3 engine power grounds and 2 transmission power grounds.
The power grounds are used to control the ground side relays, solenoids, ignition coils or injectors. The signal grounds are used for any input that uses
sensor return for ground.
The PCM case is shielded to prevent RFI and EMI. The PCM and case is grounded through the mounting screws AND bracket to the chassis ground.
Internally all grounds are connected together, however there is noise suppression on the sensor grounds.
