Golf GLS L4-2.0L (AZG) (2001)
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Connect test box VAG 1598/31 to control module wiring harness. The engine control module remains disconnected.
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Check wiring between test box and 4-pin connector to Motronic control module for open circuit using wiring diagram.
Contact 3 and socket 68
Contact 4 and socket 69
Wire resistance: max. 1.5 Ohms
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Additionally check wiring for short to one another, and for short to battery positive or Ground.
Specification: Infinity Ohms
If no fault is detected in the pipes:
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Replace engine control module.