Jetta GLS L4-1.8L Turbo (AWD) (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 for open circuit between test box and 4-pin connector for open circuit using wiring diagram.
Contact 3 + socket 55
Contact 4 + socket 56
Wire resistance: Max. 1.5 ohms
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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.
