[ainarssems]

Check out this Link: http://www.audi-portal.com/en/diagnostic/ecu_12813.html

The bits that you are interested are measuring blocks about temperatures and fan activation, duty cycle as below:

Measured value block 132: Cooling
1)-
2)-
3)-
4)Status of cooling
(Meaning of 8-digit number block)
1 2 3 4 5 6 7 8
X No fault in system
X Thermostat actuator active
X Fan actuator active
X Control deviation (0 > specified temp; 1 < specified temp)
X Fan speed 2 active
X Fan speed 1 active
X Vacant
X Hot countries function encoded
(1=Condition met; 0=Condition not met)

Measured value block 133: Automatic fan detection
1)-
2)-
3)-
4)Status of cooling
(Meaning of 8-digit number block)
1 2 3 4 5 6 7 8
X Fan configuration plausible
X 0=Single fan; 1=Dual fan
X Fan configuration detected
X Vacant
X Vacant
X Vacant
X Vacant
X Vacant
(1=Condition met; 0=Condition not met)

Measured value block 134: Temperatures
1) Oil temperature [°C]
-60 - 195
Substitute value in case of defect: 195
2)Ambient temperature [°C]
-50 - 77
Substitute value in case of defect: 77,5
3) Intake air temperature [°C]
Ambient temperature - 110: Engine warmed up at standstill
Substitute value in case of defect: 20
4)Engine temperature combi [°C]
80 - 110: Engine warmed up

Measured value block 135: Fan actuator
1)-
2)Duty cycle fan actuator 1 [%]
0 - 100
3)Duty cycle fan actuator 2 [%]
0 - 100

Measured value block 136: Fan actuator
1)-
2)-
3)-
4)Fan run-on [Text: Off / Run-on]

Measured value block 137: Air conditioner requests
1)Air conditioner readiness [Text: AC-Low/AC-High]
2)AC compressor [Text: Compr. ON / Compr. OFF]
3)Pressure from air conditioner [bar]
0 - 40
4)Fan request from air conditioner [%]
0 - 100

Measured value block 138:
Thermostat diagnosis (no basic setting possible)
1)Engine start temperature [°C]
5 - 30
2)Mean engine air mass [g/s]
11 - 72
3)Mean vehicle speed [km/h]
35 - 120
4)Result [text: Test ON / Test OFF / Syst. OK / Syst. n.OK / Abort]
Syst. OK

Measured value block 139:
Thermostat diagnosis (no basic setting possible)
1)Engine temperature in diagnosis [°C]
> 76°C (specification for successful diagnosis)
2)Actual air mass integral [kg]
0 - 46
3)Specified air mass integral [kg]
10 - 14.2 (specification for successful diagnosis)
4)Result [text: Test ON / Test OFF / Syst. OK / Syst. n.OK / Abort]
Syst. OK