Optional Temperature Gauge Reads Low

Normal Gauge Travel:

1. Verify gauge reading. Is a low temperature indicated?
^ Inspect temperature gauge sending unit. Repair or replace as necessary.

2. Is code 17 recorded in On Board Diagnostics memory?
^ If code 17 is recorded, replace the thermostat. If not, the thermostat is not the cause of the low gauge reading.

3. Is the gauge in the cold range?
^ Inspect for disconnected sending unit electrical connector or incorrect sending unit. Ensure that gauge sending unit is installed and not an indicator light switch.

4. Low coolant level during cold ambient temperatures (accompanied with poor heater performance).

WARNING: DO NOT REMOVE THE RADIATOR CAP OF A HOT, PRESSURIZED ENGINE. SERIOUS INJURY CAN RESULT FROM SCALDING COOLANT.

^ Inspect coolant level in the coolant reserve tank and radiator. Inspect system for leaks.

5. Coolant level is correct.
^ Inspect heater door controls.