Golf GLS L4-2.0L (AZG) (2001)
Wire resistance: max: 1.5 Ohms
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Use wiring diagram to check wire between test box and 4-pin connector terminal 3 for short circuit to wire of terminal 4 and to vehicle Ground
(GND).
Terminal 3 + socket 108
Terminal 3 + vehicle Ground (GND)
Specification: Infinity Ohms
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Also check both wires for shorts to battery B+.
If wiring is OK:
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Measure resistance at Engine Coolant Temperature (ECT) sensor -G62-, terminals C (signal) and D (Ground -GND-).
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Range A shows resistance values for temperature range from 0 - 50°C, and range B shows values for temperature range from 50 - 100°C.
Read-out examples:
30°C is in range A and corresponds to a resistance of 1.5 to 2.0k Ohms
80°C is in range B and corresponds to a resistance of 275 to 75 Ohms
If specified value is not obtained:
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Replace Engine Coolant Temperature (ECT) sensor -G62-.
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Check DTC memory, repair any malfunctions and then erase DTC memory.
If wiring is OK and the resistance values are OK:
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Replace Engine Control Module (ECM).