Jetta GLS L4-1.8L Turbo (AWP) (2002)
If the specification is not attained:
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Check wiring between 2-pin connector contact 2 and fuse holder using current flow diagram.
If the specification is obtained:
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Connect test box V.A.G 1598/31 to control module wiring harness. Engine control module remains disconnected.
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Check wiring for open circuit between test box and 2-pin connector using wiring diagram.
Contact 3+socket 39
Wire resistance: Max. 1.5 Ohm
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Additionally check wires for short to one another.
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Additionally check wiring for short to battery positive or Ground.
If no malfunction is detected in the wiring:
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Replace engine control module.