RAM 1500 Truck 4WD V8-5.9L VIN Z (2002)
Fig. 5 CMP And Tonewheel Operation - 4.7L
The CMP sensor on the 4.7L engine contains a hall effect device called a sync signal generator to generate a fuel sync signal. This sync signal
generator detects notches located on a tonewheel. The tone- wheel is located at the front of the camshaft for the right cylinder head. As the
tonewheel rotates, the notches pass through the sync signal generator.
The pattern of the notches (viewed counter-clockwise from front of engine) is: 1 notch, 2 notches, 3 notches, 3 notches, 2 notches 1 notch, 3
notches and 1 notch. The signal from the CMP sensor is used in conjunction with the crankshaft position sensor to differentiate between fuel
injection and spark events. It is also used to synchronize the fuel injectors with their respective cylinders.
5.9L
The Camshaft Position Sensor (CMP) on the 5.9L V-8 engine is located inside the distributor.
Fig. 6 CMP / Pulse Ring - 5.9L
The CMP sensor on the 5.9L V-8 engine contains a hall effect device called a sync signal generator to generate a fuel sync signal. This sync signal
generator detects a rotating pulse ring (shutter) on the distributor shaft. The pulse ring rotates 180 degrees through the sync signal generator. Its
signal is used in conjunction with the Crankshaft Position (CKP) sensor to differentiate between fuel injection and spark events. It is also used to
