The Crankshaft Position (CKP) sensor provides a signal through the ignition module which the PCM uses as a reference to calculate rpm and crankshaft position.
See Figure 1
- Turn the ignition key OFF .
- Unplug the sensor electrical harness and check the terminals for corrosion and damage.
- Check the sensor wiring harness wires for continuity and repair as necessary.
- Attach the sensor harness making sure it is firmly engaged.
- Using a Digital Volt Ohm Meter (DVOM) set on the DC scale, backprobe the sensor signal terminal (terminal A) with the positive lead of the meter and backprobe the sensor ground terminal (terminal B) with the negative lead of the meter.
- Have an assistant crank the engine and observe the meter.
- You should have approximately a 5 volt reference signal pulse. If not the sensor may be defective.
REMOVAL & INSTALLATION
See Figures 2, 3, 4 and 5
- Disconnect the negative battery cable.
- Raise the vehicle and support it with jackstands.
- Unplug the sensor harness connector at the sensor.
- Unfasten the retaining bolt, then remove the sensor from below the coil pack on 2.2L engines, and above the oil filter on the 2.3L/2.4L engines. Inspect the sensor O-ring for wear, cracks or leakage and replace if necessary.
- Lubricate the O-ring with clean engine oil, then place it on the sensor.
- Install the sensor and tighten the retaining bolt to 71 inch lbs. On the 2.2L engine and 88 inch lbs. (10 Nm) on the 2.3L/2.4L engine.
- Attach the sensor harness connector.
- If removed, install the steering linkage shield.
- Lower the vehicle.
- Connect the negative battery cable.