Jetta Sedan L4-1.8L Turbo (AWP) (2003)
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Check wiring between test box and 4-pin connector for open circuit using wiring diagram.
Cylinder 1 contact 3 + socket 102
Cylinder 2 contact 3 + socket 95
Cylinder 3 contact 3 + socket 103
Cylinder 4 contact 3 + socket 94
Wire resistance: Max. 1.5 Ohm
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Additionally check wires for short to one another.
If no fault can be found in the wiring:
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Replace engine control module.
