A4 Quattro Wagon L4-1.8L Turbo (AWM) (2001)
Display Group 004
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Press "08 - Read Measuring Value Block" to end function <- button.
If display field 3 does not have a realistic indication:
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Disconnect connector at coolant temperature sensor.
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Connect multimeter between terminal C and D of sensor for resistance measurement.
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.