Grand Cherokee 4WD V8-5.2L VIN Y (1998)
Low Fuel Lamp/Indicator: Testing and Inspection
Low Fuel Warning Lamp
The diagnosis found here addresses an inoperative low fuel warning lamp condition. If the problem being diagnosed is related to lamp accuracy, be
certain to confirm the problem is the with the low fuel warning lamp and not with the fuel gauge circuit. See the diagnosis for the Fuel Gauge. If no fuel
gauge problem is found, the following procedure will help to identify a faulty low fuel warning lamp circuit.
WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, REFER TO AIRBAG SYSTEMS BEFORE ATTEMPTING ANY STEERING
WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. FAILURE TO TAKE THE
PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
If the low fuel warning lamp fails to light during the bulb test (about four seconds after the ignition switch is turned to the On position), replace the low
fuel warning lamp bulb with a known good unit. If the indicator lamp still fails to operate, diagnosis of the lamp, the instrument cluster circuitry, the fuel
gauge sending unit and circuit, the Powertrain Control Module (PCM), the Chrysler Collision Detection (CCD) data bus, or the Body Control Module
(BCM) should be performed with a DRB scan tool. For further diagnosis of the low fuel warning lamp and the instrument cluster circuitry, see
Instrument Panel, Gauges and Warning Indicators/Instrument Panel/Instrument Cluster.
