volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

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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-.

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