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Home >> Jeep >> 2007 >> Liberty Limited, RWD >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Cooling System (Mechanical) >> Engine & Automatic Transmission Cooling System >> Engine >> Thermostat-Engine Coolant >> Diagnosis And Testing >> Engine Coolant Thermostat >> On-Board Diagnostics

On-Board Diagnostics

All models 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). For other DTC numbers, refer to OPERATION .