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

Fuel Tank Temperature Sensor (CNG): Description and Operation

Fuel Tank Temperature (FTT) Sensor




The FTT sensor is on the fuel joint block. It measures the temperature of the fuel. This signal is used to calculate the amount of fuel in the fuel tank.