Grand Cherokee 2WD V8-5.2L VIN Y (1998)
Temperature Gauge: Testing and Inspection
Temperature Gauge Test
If the problem being diagnosed is related to coolant temperature gauge accuracy, be certain to confirm that the problem is with the gauge and not with
cooling system performance. The actual engine coolant temperature should be checked with a test gauge or thermometer and compared to the instrument
cluster coolant temperature gauge readings before you proceed with gauge diagnosis.
WARNING: ON VEHICLES EQUIPPED WITH AIR-BAGS, REFER TO AIRBAGS SYSTEM 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.
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.
