Tracer L4-110 1.8L DOHC (1995)
Camshaft Position Sensor: Description and Operation
Distributor
PURPOSE
The Camshaft Position (CMP) sensor detects cylinder #1 TDC compression stroke. The Powertrain Control Module (PCM) uses this signal to
calculate fuel injection timing.
OPERATION
The sensor uses a disc with 1 slot which rotates with the distributor shaft. As the disc rotates, the slot passes through a fixed photo sensor,
indicating cylinder #1 TDC compression to the PCM.