Riviera V6-3.8L SC VIN 1 (1995)
Camshaft Position Sensor: Description and Operation
Camshaft And Crankshaft Position Sensors
DESCRIPTION
The camshaft position sensor is located on the timing cover behind the water pump near the camshaft sprocket.
As the camshaft sprocket turns, a magnet in it activates the Hall-effect switch in the camshaft position sensor. When the Hall-effect switch is
activated, it grounds the signal line to the PCM, pulling the cam signal line's applied voltage low. This is interpreted as a cam signal. The cam
signal is created as piston #1 is approximately 25 degrees after top dead center on the power stroke.
When the cam signal is not received by the PCM DTC P0342 will be set.
