Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD1994TAURUS V6-182 3.0L DOHC SHOREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMHALL EFFECT SENSORDESCRIPTION AND OPERATIONEI-LOW DATA RATE
1994 Ford Taurus V6-182 3.0L DOHC SHO
EI-Low Data Rate
1994 Ford Taurus V6-182 3.0L DOHC SHOSECTION EI-Low Data Rate
CAMSHAFT/CRANKSHAFT SENSORS
The camshaft position and crankshaft position sensors used are digital hall devices. The camshaft position sensor is located on the rear cylinder head close to cylinder 1. A rotary vane cup (or wheel), made of ferrous metal, is used to trigger the hall effect switch located in the sensor. The camshaft cup has one tooth and is driven by the camshaft. The signal from the camshaft position sensor has one positive-going edge once every two crank revolutions (one cam revolution). The crankshaft cup has three teeth and the crankshaft position sensor generates three positive (PIP) edges every revolution of the crankshaft.
When the window of the vane cup is between the magnet and hall effect device, a magnetic flux field is completed from the magnet through the hall effect device and back to the magnet, the output signal will be low (zero volts). However, when the vane tooth moves into the gap between the hall effect device and the magnet, the flux lines are shunted through the vane and back to the magnet and the output will change from a low to high (B+).
Hall Effect Device:
Rotary Vane Cup-CMP Sensor:
The camshaft position and crankshaft position sensors used are digital hall devices. The camshaft position sensor is located on the rear cylinder head close to cylinder 1. A rotary vane cup (or wheel), made of ferrous metal, is used to trigger the hall effect switch located in the sensor. The camshaft cup has one tooth and is driven by the camshaft. The signal from the camshaft position sensor has one positive-going edge once every two crank revolutions (one cam revolution). The crankshaft cup has three teeth and the crankshaft position sensor generates three positive (PIP) edges every revolution of the crankshaft.
Magnetic Flux Field:
Hall Effect Device Response To Vane:
When the window of the vane cup is between the magnet and hall effect device, a magnetic flux field is completed from the magnet through the hall effect device and back to the magnet, the output signal will be low (zero volts). However, when the vane tooth moves into the gap between the hall effect device and the magnet, the flux lines are shunted through the vane and back to the magnet and the output will change from a low to high (B+).
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.