PINPOINT TEST C : The Engine Does Not Reach Normal Operating Temperature
- WARNING: Always allow the engine to cool before opening the cooling system. Do not unscrew the coolant pressure relief cap when the engine is operating or the cooling system is hot. The cooling system is under pressure; steam and hot liquid can come out forcefully when the cap is loosened slightly. Failure to follow these instructions may result in serious personal injury.
- C1 CARRY OUT INSPECTION AND VERIFICATION
- Carry out Inspection and Verification. Refer to Engine Cooling .
Were any concerns found?
Yes REPAIR as needed. TEST the system for normal operation. No GO to C2. - C2 CHECK FOR DTC P0125 or P0128
- Check for DTC P0125 or P0128.
Is DTC P0125 or P0128 present?
Yes GO to C3. No The cooling system is operational. If an inoperative temperature gauge is suspected, CHECK the temperature gauge operation. Go to Pinpoint Test D . If an inoperative climate control system is suspected, CHECK the climate control system operation. Go to Pinpoint Test I or Go to Pinpoint Test G . If any other PCM DTCs are retrieved, REFER to Electronic Engine Controls . - C3 CHECK THE ELECTRIC COOLING FAN OPERATION
- Allow the engine to cool.
- Make sure the A/C switch is OFF.
- Start the engine.
- Check the electric cooling fan.
Is the electric cooling fan on all the time?
Yes DIAGNOSE the electric cooling fan operation. REFER to the ENGINE CONTROLS - SYMPTOM CHARTS (EXCEPT DIESEL & HYBRID) . No GO to C4. - C4 CHECK THE COOLANT LEVEL
- Visually check the engine coolant level in the degas bottle.
Is the engine coolant level within specification?
Yes INSTALL a new thermostat. TEST the system for normal operation. No GO to Pinpoint Test A .