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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Oil Pressure Sensor: Description and Operation







The PCM monitors the engine oil pressure switch (1) signal to determine if the engine oil pressure is Ok. If the PCM determines that a low oil pressure condition exists, the PCM will communicate the information over the Class II circuit to the IPC and it will illuminate the indicator lamp.