Cherokee 4WD L6-4.0L VIN S (1998)
Oil Pressure Warning Lamp/Indicator: Testing and Inspection
If the problem being diagnosed is related to low oil pressure warning lamp accuracy, be certain to confirm that the problem is with the lamp and not with
the engine oiling system performance. The actual engine oil pressure should be checked with a test gauge and compared to the low oil pressure warning
lamp operation before you proceed with lamp diagnosis.
WARNING: ON VEHICLES EQUIPPED WITH AIR-BAGS, REFER TO AIR BAGS AND SEAT BELTS/AIR BAGS BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE.
FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIR-BAG DEPLOYMENT AND POSSIBLE
PERSONAL INJURY.
If the low oil pressure warning lamp fails to light during the bulb test (about 2 Seconds after the ignition switch is turned to the On position), replace the
low oil pressure warning lamp bulb with a known good unit. If the low oil pressure warning lamp still fails to operate, diagnosis of the oil pressure sensor
and circuit, the Chrysler Collision Detection (CCD) data bus, and/or the Powertrain Control Module (PCM) should be performed with a DRB scan tool.
For diagnosis of the low oil pressure warning lamp and the instrument cluster circuitry, see Instrument Panel, Gauges and Warning Indicators/Instrument
Panel.
