TT Quattro Coupe L4-1.8L Turbo (AWP) (2001)
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Check wires between test box and 4-pin connector for open circuit according to wiring diagram.
Terminal 1 + socket 108
Terminal 3 + socket 93
Wire resistance: max: 1.5 Ohm
Coolant temperature sensor with oval connector:
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Check wires between test box and 4-pin connector for open circuit according to wiring diagram.
Terminal 3 + socket 108
Terminal 4 + socket 93
Wire resistance: max: 1.5 Ohm
Continuation for all vehicles
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Also check wires for short circuit to each other, to vehicle Ground (GND) and to B+.
Specified value: Infinite Ohm
If no malfunctions are found in wires:
Coolant temperature sensor with square connector:
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Connect multimeter between terminal 1 and 3 of sensor for resistance measurement.
Coolant temperature sensor with oval connector: