chrisk1500
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I took this out of a manual I have. I hope it helps those having issues with their CPS.
Crankshaft Position Sensor Description and Operation
The crankshaft sensor is located in the front cover. The sensor is
positioned over the crankshaft sprocket and consists of a Hall-effect
device and a magnet. The crankshaft sprocket has four teeth at 90°
intervals. As the sprocket rotates, its teeth pass the sensor.
• When no teeth of the sprocket are in alignment with the sensor, the
sensor's magnetic field passes through the Hall-effect device. This
causes the device to turn "OFF," allowing the sensor signal line to the
PCM to go high (5 volts).
• As a tooth of the crankshaft sprocket comes into alignment with the
sensor, the magnetic field passes through the lower reluctance of the
tooth instead of the Hall-effect device. This causes the device to turn
"ON," which pulls the sensor signal line low (0 volts).
The crankshaft sensor high/low digital signal is monitored by the PCM to
determine crankshaft/engine speed. If the crank signal is lost while the
engine is running, the fuel injection system will shift to a calculated fuel
injection mode based on the last fuel injection pulse and the engine will
continue to run as long as there is a signal from the optical sensor.
The crank sensor signal is not only used for engine speed input, but it is
also used for misfire diagnosis. The PCM watches acceleration and
deceleration rates of each cylinder to determine if any cylinder is not
contributing.
The crankshaft position sensor is a Hall-effect device that receives a 5 volt
reference signal from the PCM, which it shares with the boost sensor on
turbo models. The sensor converts its changing magnetic field to a digital
electrical signal and sends it to the PCM on the crankshaft position signal
circuit.
The sensor shares a ground with the boost sensor, ECT sensor, and IAT
sensor. It also shares a 5-volt reference signal with the EGR control
pressure/baro sensor and boost sensor.
Here is a pic of the wiring diagram
Crankshaft Position Sensor Description and Operation
The crankshaft sensor is located in the front cover. The sensor is
positioned over the crankshaft sprocket and consists of a Hall-effect
device and a magnet. The crankshaft sprocket has four teeth at 90°
intervals. As the sprocket rotates, its teeth pass the sensor.
• When no teeth of the sprocket are in alignment with the sensor, the
sensor's magnetic field passes through the Hall-effect device. This
causes the device to turn "OFF," allowing the sensor signal line to the
PCM to go high (5 volts).
• As a tooth of the crankshaft sprocket comes into alignment with the
sensor, the magnetic field passes through the lower reluctance of the
tooth instead of the Hall-effect device. This causes the device to turn
"ON," which pulls the sensor signal line low (0 volts).
The crankshaft sensor high/low digital signal is monitored by the PCM to
determine crankshaft/engine speed. If the crank signal is lost while the
engine is running, the fuel injection system will shift to a calculated fuel
injection mode based on the last fuel injection pulse and the engine will
continue to run as long as there is a signal from the optical sensor.
The crank sensor signal is not only used for engine speed input, but it is
also used for misfire diagnosis. The PCM watches acceleration and
deceleration rates of each cylinder to determine if any cylinder is not
contributing.
The crankshaft position sensor is a Hall-effect device that receives a 5 volt
reference signal from the PCM, which it shares with the boost sensor on
turbo models. The sensor converts its changing magnetic field to a digital
electrical signal and sends it to the PCM on the crankshaft position signal
circuit.
The sensor shares a ground with the boost sensor, ECT sensor, and IAT
sensor. It also shares a 5-volt reference signal with the EGR control
pressure/baro sensor and boost sensor.
Here is a pic of the wiring diagram
