Passport LX 4WD V6-3165cc 3.2L DOHC MFI (2001)
Low Fuel Lamp/Indicator: Description and Operation
How the Circuit Works
WARNING: Do not smoke while working on the fuel system. Keep open flame away from the work area. Drain fuel only into a approved
container.
The resistance of the fuel tank unit varies according to the float position in the fuel tank. When the fuel tank has an adequate amount of fuel, the low fuel
indicator light circuit is open and the indicator light will not come on.
The fuel level output is received by the engine or powertrain control module (ECM or PCM), and when the fuel level drops to almost empty, the ECM or
PCM closes the circuit and the Low Fuel Indicator comes on to alert the driver.
NOTE 1: The circuit between the PCM and the gauge can be tested with the PCM Tester. In the "ENGINE\MISC TESTS\FUEL GAUGE" menu, the
PCM Tester can command the PCM to move the gauge in 10% increments.