MR2 L4-132 2164cc 2.2L DOHC (5S-FE) (1993)
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Camshaft Position Sensor: Description and Operation
PURPOSE
The camshaft angle sensor produces an output pulse to the ECM 1 time per distributor rotation. The ECM uses this signal to determine TDC
position for #1 cylinder.
LOCATION
The sensor is mounted inside the distributor.
CONSTRUCTION
The sensor is made up of a pick-up coil and a rotor with 1 tooth. The tooth coresponds to #1 cylinder TDC.
OPERATION
Whenever the engine is rotating, a sine-wave signal is returned to the ECM. As engine speed increases the frequency of the signal increases as
well. When coupled with the signal of the engine rpm sensor, exact piston position can be determined by the ECM.
