New Beetle GLS L4-1.8L Turbo (AWV) (2001)
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Check wiring for open circuit between test box and 4-pin connector using Electrical Wiring Diagram.
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terminal 3 + socket 55
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terminal 4 + socket 56
Wire resistance: Max. 1.5 Ohms
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Also check wires for short to one another.
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Also check wiring for short to battery positive or Ground (GND).
If no wiring malfunction is found:
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Replace Motronic Engine Control Module (ECM) -J220-.