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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Fluid Pressure Sensor/Switch: Testing and Inspection

Secondary Pressure Sensor

INSPECTION
1) Remove the instrument panel lower cover.
2) Start and warm up the engine.
3) Check the voltage of secondary pressure sensor with engine idling.