Viper SRT-10 V10-8.4L (2008)
Fuel Gauge Sender: Description and Operation
Fuel Level Sensor
Description
DESCRIPTION
The level sensor is attached to the side of the fuel pump module. The level sensor consists of a float, an arm, and a variable resistor.
Operation
OPERATION
As the fuel level increases, the float and arm move up. This decreases the sending unit resistance, causing the fuel gauge on the instrument panel to read
full. The fuel level sensor (fuel gauge sending unit) is monitored by the BCM to indicate fuel level. The BCM sends a raw fuel message to the PCM and
to a dampened fuel message to the cluster. The PCM will not set misfire and fuel system monitor trouble codes if the fuel level is less than approximately
15 percent of its rated capacity. The BCM has open and short circuit detection on the fuel level sensor input.
