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

Crankshaft Position Sensor: Description and Operation

The CKP sensor located on the oil pan (front side) consists of the signal generator (pick-up coil and magnet) and signal rotor (on crankshaft timing belt pulley).
As the signal rotor (crankshaft) turns, AC voltage is generated in the pick-up coil. This pulse signal (6 pulses/revolution) is sent to ECM where it is used to calculate the variation of crankshaft speed (detect if misfire occur).