A6 Sedan V6-2.8L (ATQ) (2000)
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Connect multimeter between terminal 3 and 4 of connector for resistance measurement.
All models
Range A shows the resistance values for the temperature range from 0-50 °C, and range B shows the values for the temperature range from 50-100 °C.
Read-out examples:
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30°C corresponds to a resistance of 1500 to 2000 Ohms
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80°C corresponds to a resistance of 275 to 375 Ohms
If specified value is not obtained:
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Replace coolant temperature sensor.
If specified value is obtained:
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Connect VAG1598/31 test box at wiring harness to ECM, do not connect ECM. Refer to "Scan Tool Testing/Wire And Component Test Using
VAG1598/31 Test Box", See: Computers and Control Systems/Testing and Inspection
Coolant temperature sensor with square connector: