Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Camshaft Position Sensor: Description and Operation

Cam Position Sensor:

PCM Wiring:

CAMSHAFT SENSOR OPERATION
The cam position sensor is a Hall effect switch located in the distributor. It provides one pulse per rotation of the distributor. The PCM uses the cam sensor signal to know the location of the camshaft for proper fuel distribution. PCM code P041 will set if the computer receives reference pulses and does not detect a cam sensor pulse.