The Crankshaft Position (CKP) sensor senses the crank angle (piston position) of each cylinder and converts it into a pulse signal. The ECM receives this signal and then computes the engine speed and controls the fuel injector timing and ignition timing based on this input.
Removal & Installation
- On 3.6L engines, raise and safely support the vehicle.
- On 4.6L engines, remove the intake manifold.
- Unplug the harness connector from the sensor.
- Clean the area around the sensor to prevent debris from entering the engine.
- Remove the bolt securing the sensor, then remove it from the engine.
Installation is the reverse of removal. Lubricate a new O-ring with clean engine oil. Tighten the bolt to 89 inch lbs. (10 Nm). Connect the scan tool to the vehicle and perform the CKP sensor variation learn procedure.
- Inspect the CKP sensor for correct installation. Remove the CKP sensor from the engine and inspect the sensor O-ring for damage. If the sensor is loose, incorrectly installed, or damaged, replace the CKP sensor.
- Engage the CKP sensor harness connector to the CKP sensor.
- Connect the scan tool to the diagnostic connector.
- With the ignition ON , engine off observe the CKP Active counter parameter on the scan tool.
- Pass a flat steel object across the tip of the sensor repeatedly. The CKP Active counter parameter should increment with each pass of the steel object.
- If the parameter does not increment, replace the CKP sensor.