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Home >> Audi >> 1991 >> 100 Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Coolant Temperature Sensor (2.3L)

Coolant Temperature Sensor (2.3L)

Coolant temperature sensor consists of 2 variable thermal resistors. One resistor signals temperature of coolant to ICU. The other resistor signals same information to FICU.

These signals are used to provide corrections to air fuel mixture, depending on coolant temperature. Both resistors have same resistance value. Coolant temperature sensor is located in cylinder head coolant outlet flange.