- Verify that the cooling system is properly filled.
- If the complaint is a low temperature gage reading, check the
temperature gage for proper operation. Connect a scan tool to the vehicle
and read the system temperature. Compare this reading to the temperature gage.
Replace the gage or switch if necessary.
- If the complaint is no heat from the HVAC system, refer to
Heating Insufficient
in Air Conditioning.
- Verify proper thermostat operation. Refer to
Thermostat Diagnosis
.