Skylark V6-3100 3.1L VIN M SFI (1996)
Camshaft Position Sensor: Description and Operation
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 Halleffect switch is activated, it grounds the signal line to
the PCM, pulling the camshaft position sensor signal drcuit[prime ]s applied voltage low. This is interpreted as a CAM signal. The CAM signal is
created as piston #1 is on the intake stroke. If the correct CAM signal is not received by the PCM, DTC P0341 will be set.
If the CAM signal is lost while the engine is running, the fuel injection system will shift to a calculated sequential fuel injection mode based on the
last fuel injection pulse, and the engine will continue to run. The engine can be restarted and will run in the calculated sequential mode as long as
the fault is present with a 1 in 6 chance of injector sequence being correct. Refer to DTC P0341 for further information.
