Quote:
Originally Posted by ant7
under the impression that the sensor was actually similar to the Crank reference sensors
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The "sensor" is a reed switch. It's open (infinite ohms) when there's no magnet under it, and closed (no/low resistance) when there is. One side is power, the other is a square wave fed into the speedo, which counts the pulses.
Quote:
Originally Posted by ant7
try turning the wheels to a different position, and see if I get anything different
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- Get a helper to turn the axle or wheel. Or roll the car - doesn't need to be in gear.
- Measure continuity.
But if the wheels are off the ground and you have an open diff, make sure to turn the side with the sensor/carrier disk...
Turning the axle and randomly measuring continuity statically is the hard way to do this.
Dynamic test is much better & easier - one full turn and you'll know exactly what's going on.
Rolling diameter of the tire is ~25", so the car doesn't need to move very far. When I was calibrating my Yellow Dog, I checked the sensor for correct operation by sticking a leg out the door and scooting the car backwards Flintstones style.