Cutlass Ciera Cruiser V6-3100 3.1L MFI VIN M (1994)
Temperature Gauge: Description and Operation
Circuit Operation
ENGINE COOLANT TEMPERATURE GAUGE
The Engine Coolant Temperature Gauge is also operated by two coils. Battery voltage is applied to both coils. One is grounded directly and the other
is grounded through the Engine Coolant Temperature Sensor. The Engine Coolant Temperature Sensor has 44 ohms resistance at 280°F (138°C) and
its resistance increases at lower temperatures. Resistance is approximately 1365 ohms at 100°F (37°C). This causes the current through the Engine
Coolant Temperature Sensor and one coil to increase as the coolant temperature increases and moves the pointer.
