Passport LX 4WD V6-3165cc 3.2L DOHC MFI (2001)
Fuel Gauge: Description and Operation
Fuel Gauge
The fuel gauge consists of two intersecting coils wound around a permanent magnet rotor (see coolant temperature gauge for operation). The engine
(M/T) or powertrain (A/T) control module (ECM or PCM) tracks the fuel level by monitoring the resistance in the fuel tank unit. The resistance varies
from about 80 ohms with the tank full to 290 ohms with it empty. The ECM or PCM uses this information to control the fuel gauge.
NOTE 1: The circuit between the PCM and the gauge can be tested with the PGM Tester. In the "ENGINE\MISC TESTS\FUEL GAUGE" menu, the
PGM Tester can command the PCM to move the gauge in 10% increments.