Golf GL L4-2.0L (AEG) (2001)
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Disconnect 4-pin harness connector from Engine Coolant Temperature (ECT) sensor -G62- with Engine Coolant Temperature (ECT) sensor -G2-
(arrow).
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Check wiring between test box and 4-pin harness connector for open circuit according to wiring diagram.
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through m.y. 1999: Terminal -1- + socket 67
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from m.y. 2000: Terminal -4- + socket 67
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Terminal -3- + socket 53
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Wire resistance: max. 1.5 ohms
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Check wire between test box and 4-pin harness connector terminal -1- for short to wire terminal -3- or to vehicle Ground (GND) according to
wiring diagram.
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Terminal -3- + socket 67
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Terminal -3- + vehicle Ground (GND)
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Specified value: Infinity ohms
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Additionally check both wires for short to battery positive.
Specified value: Infinity ohms
If no malfunction is found in wiring: