Cherokee 2WD L6-4.0L VIN S (1998)
Temperature Warning Lamp/Indicator: Testing and Inspection
If the problem being diagnosed is related to coolant temperature warning lamp accuracy, be certain to confirm that the problem is with the lamp and not
with cooling system performance. The actual engine coolant temperature should be checked with a test gauge or thermometer and compared to the
coolant temperature 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 coolant temperature warning lamp fails to light during the bulb test (about 2 Seconds after the ignition switch is turned to the On position), replace
the coolant temperature warning lamp bulb with a known good unit. If the coolant temperature warning lamp still fails to operate, diagnosis of the
coolant temperature 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 coolant temperature warning lamp and the instrument cluster circuitry, see Instrument Panel,
Gauges and Warning Indicators/Instrument Panel.
