Temperature Gauge: Description and Operation
Circuit DescriptionEngine Coolant Temperature Gauge
The pointer of the engine coolant temperature gauge is moved by the magnetic field of two coils. The coils are at right angles to each other. Battery voltage is applied to the coils through fuse 10, generating a magnetic field. The magnetic field, controlled by the engine coolant temperature sender cause the gauge needle to move. As the resistance in sender varies, current through the gauge coils changes