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

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

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Engine Oil Level Sensor/Switch Diagnosis












Circuit Description
The Oil Level sensor is a normally open switch. When the engine oil level drops below a predetermined amount the switch will close. The PCM will then send a message (via class 2) to the BCM indicating that a low oil condition is present. The Driver Information Center then displays Low Oil Level.