Originally Posted by
arado
I have read about CPS failures on this forum since I joined in 06. I wonder what fails on this instrument? Anybody know? I don't have one to bench check.
The Crankshaft Position Sensor is simply a wire wrapped around a magnet, so it can be only 3 things :
1. the wire coil has an intermittent connection ( likely )
2. The magnet lost it's magnetism ( highly unlikely )
3. The connector / harness has an intermittent open.
On the other hand, the Camshaft Position Sensor is a Hall Effect transistor.
This device works by a magnet coming in close proximity to the transistor, which turns it on.