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

PURPOSE/OPERATION

The Camshaft Position Sensor (CMP) senses the Top Dead Center (TDC) point of No.1 cylinder in its compression stroke, whose signals are fed to Engine Control Module (ECM) to be used to determine the sequence of fuel injection.