Q: How Can I Test the Coolant Temperature Indicator System and Coolant Temperature Sensor?
A: The coolant temperature indicator system consists of a light or temperature gauge on the instrument panel and a coolant temperature-sending unit on the engine. Testing the circuit by grounding the wire to the sending unit can help determine the issue. If the sending unit needs to be replaced, it can be unscrewed from the engine and the replacement can be installed using sealant on the threads.