Summit L4-1795cc 1.8L SOHC (1995)
Camshaft Position Sensor: Description and Operation
PURPOSE
The camshaft position sensor detects the top dead center on the compression stroke of the No. 1 cylinder, converts it into a pulse signal and inputs
it to the engine control module. The engine control module determines the fuel injection sequence based on this signal.
OPERATION
Power to the camshaft position sensor is supplied from the Multiport Fuel Injection (MFI) relay and is grounded to the body. A 5V voltage is
applied from the engine control module to the camshaft position sensor output terminal, and the camshaft position sensor generates a pulse signal
as it switches from OPEN to SHORT (power transistor inside the sensor switches ON/OFF) between the output terminal and the ground.
