SENSOR-CRANKSHAFT POSITION
DESCRIPTION
The Crankshaft Position (CKP) sensor (2) is mounted into the right rear side of the cylinder block . It is positioned and bolted into a machined hole.
OPERATION
Engine speed and crankshaft position are provided through the CKP (Crankshaft Position) sensor. The sensor generates pulses that are the input sent to the Powertrain Control Module (PCM). The PCM interprets the sensor input to determine the crankshaft position. The PCM then uses this position, along with other inputs, to determine injector sequence and ignition timing.
The sensor is a hall effect device combined with an internal magnet. It is also sensitive to steel within a certain distance from it.
A tonewheel (targetwheel) is bolted to the engine crankshaft (1) . This tonewheel has sets of notches (2) at its outer edge .
The notches (2) cause a pulse to be generated when they pass under the sensor. The pulses are the input to the PCM.
REMOVAL
The Crankshaft Position (CKP) sensor (2) is mounted into the right rear side of the cylinder block. It is positioned and bolted into a machined hole.
1. Raise vehicle.
2. Disconnect sensor electrical connector.
3. Remove sensor mounting bolt (1) .
4. Carefully twist sensor from cylinder block.
5. Check condition of sensor O-ring (3).
INSTALLATION
1. Clean out machined hole in engine block.
2. Apply a small amount of engine oil to sensor O-ring (3).
3. Install sensor (2) into engine block with a slight rocking and twisting action.
CAUTION: Before tightening sensor mounting bolt, be sure sensor is completely flush to cylinder block. If sensor is not flush, damage to sensor mounting tang may result.
4. Install mounting bolt (1) and tighten to 28 N·m (21 ft. lbs.) torque.
5. Connect electrical connector to sensor.
6. Lower vehicle.