Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Set Multimeter to Resistance Set meter to measure resistance
Remove the connector from the primary sensor

Measurement:

Measure the resistance across the Primary Sensors pins.
The resistance depends on temperature and
should conform to the table below:
Temperature °CResistance in kOhms
20 - 3012.0 - 8.2
30 - 408.5 - 5.5
40 - 505.8- 3.8
50 - 604.0 - 2.7
60 - 702.9 - 2.0
70 - 802.1 - 1.4