Jetta L4-2.0L (AEG) (2000)
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Check wiring for open circuit between test box and 4-pin harness connector to Motronic Engine Control Module (ECM) according to wiring
diagram.
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Terminal -3- + socket 51
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Terminal -4- + socket 52
Wire resistance: max. 1.5 ohms
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Check wiring at harness connector terminals -3- + -4- for short circuit to terminals -1- + -2- according to wiring diagram.
Specified value: Infinity ohms
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If no malfunction is found in the wiring, replace Engine Control Module (ECM).