Dodge dakota 2002 Service Manual page 298

DR
COOLING (Continued)
CONDITION
TEMPERATURE GAUGE
READS LOW
COOLING SYSTEM DIAGNOSIS CHART
POSSIBLE CAUSES
1. Has a Diagnostic Trouble
Code (DTC) been set indicating
a stuck open thermostat?
2. Is the temperature sending
unit connected?
3. Is the temperature gauge
operating OK?
4. Coolant level low in cold
ambient temperatures
accompanied with poor heater
performance.
5. Improper operation of internal
heater doors or heater controls.
COOLING
CORRECTION
1. (Refer to 25 - EMISSIONS CONTROL -
DESCRIPTION) for On-Board Diagnostics
and DTC information. Replace thermostat
if necessary.
2. Check the temperature sensor
connector. (Refer to 8 - ELECTRICAL/
INSTRUMENT CLUSTER - SCHEMATIC -
ELECTRICAL) Repair connector if
necessary.
3. Check gauge operation. (Refer to 8 -
ELECTRICAL/INSTRUMENT CLUSTER/
ENGINE TEMPERATURE GAUGE -
DESCRIPTION). Repair as necessary.
4. Check coolant level in the coolant
reserve/overflow tank or degas bottle and
the radiator. Inspect system for leaks.
Repair leaks as necessary. Refer to the
Coolant section of the manual text for
WARNINGS and CAUTIONS associated
with removing the radiator cap.
5. Inspect heater and repair as necessary.
(Refer to 24 - HEATING & AIR
CONDITIONING - DIAGNOSIS AND
TESTING) for procedures.
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