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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Fuel Sender - Range 0 - 275 Ohm




The Body Function Controller (BFC) reads the Fuel Level Sensor value in ohms, filters it to prevent fuel gage slosh, and sends fuel level information (in counts) to the Instrument Cluster via the Serial Peripheral Interface (SPI) data. The Instrument Cluster then drives the Fuel Gage Pointer. The Fuel Sender ohm value to the fuel gage (pointer) position ratio is as follows: