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
Fuel Level Sensing
The
Body Function Controller (BFC) calculates fuel level and sends a serial data message to the Instrument Cluster indicating fuel level. The fuel level is calculated as a ratiometric reading between the Fuel Level Sensor and an Ignition 1 reference voltage. By using this method, changes in system voltage will have no effect on fuel level. The
Body Function Controller (BFC) sends changes in fuel level information to the Instrument Cluster over the Serial Peripheral Interface
(SPI) serial data bus.