Durango 2WD V8-4.7L (2008)
Thermostat: Testing and Inspection
DIAGNOSIS AND TESTING
ON-BOARD DIAGNOSTICS
All engines are equipped with On-Board Diagnostics for certain cooling system components. If the powertrain control module (PCM) detects low engine
coolant temperature, it will record a Diagnostic Trouble Code (DTC) in the PCM memory. Do not change a thermostat for lack of heat as indicated by
the instrument panel gauge or by poor heater performance unless a DTC is present. For other DTCs, See: Powertrain Management/Computers and
Control Systems/Testing and Inspection/Diagnostic Trouble Code Tests and Associated Procedures
The DTC can also be accessed through the DRB scan tool. Refer to the appropriate Powertrain Diagnostic Procedures information for diagnostic
information and operation of the DRB scan tool.
