RAM 1500 Truck 4WD V8-5.7L VIN D (2005)
Engine Control Module: Description and Operation
5 Volt Supplies
Two different Powertrain Control Module (PCM) five volt supply circuits are used; primary and secondary.
Primary 5-volt supply:
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supplies the required 5 volt power source to the Crankshaft Position (CKP) sensor.
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supplies the required 5 volt power source to the Camshaft Position (CMP) sensor.
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supplies a reference voltage for the Manifold Absolute Pressure (MAP) sensor.
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supplies a reference voltage for the Throttle Position Sensor (TPS) sensor.
Secondary 5-volt supply:
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supplies the required 5 volt power source to the oil pressure sensor.
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supplies the required 5 volt power source for the Vehicle Speed Sensor (VSS) (if equipped).
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supplies the 5 volt power source to the transmission pressure sensor (certain automatic transmissions).
