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)

Or, hide this message: temporarily or permanently

With Manufacturer's Scan Tool



Fuel Consumption Signal For On-board Computer, Testing

NOTE: The fuel consumption signal is transmitted between engine control module and instrument cluster via CAN bus. Testing data transfer between engine control modules and other control modules with CAN interface. With Manufacturer's Scan Tool