Jetta GLS L4-1.8L Turbo (AWD) (2001)
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Checking wiring
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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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Pull connector -1- off Intake Air Temperature (IAT) sensor (G42) -2-.
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Check wiring between test box and 2- pin connector -1- for open circuit using wiring diagram.
Contact 1 + socket 85
Contact 2 + socket 108
Wire resistance: max. 1.5 ohms
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Additionally check both wires for short to battery positive.
If no fault in wire is detected:
