Corsica L4-121 2.0L (1988)
Fuel Gauge: Description and Operation
Electronic Instrument Cluster
The fuel gauge sender provides a signal to the cluster that is related to fuel level. With a full tank, the resistance is less than 90 ohms, and with an empty
tank, the resistance is less than 4 ohms. The microprocessor converts this signal and activates a 13 segment bar graph which displays the fuel level. If
there is an open in the sender circuit, the fuel symbol will flash. When the sender's resistance equals 10 ohms or less, the fuel symbol will flash for 12
seconds. The yellow tank mark will flash until the low fuel condition is eliminated.