Operation CHARM: Car repair manuals for everyone.
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

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Camshaft Position Sensor: Description and Operation

The Camshaft Position sensor (CMP sensor):
- is a variable reluctance sensor triggered by a single vane which is driven by the camshaft.
- provides camshaft position information which is used by the Powertrain Control Module (PCM) for fuel synchronization.