volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Intake Air System, Checking For Leaks (False/Unmetered Air)|Page 1199 > < Intake Air System, Checking For Leaks (False/Unmetered Air)|Page 1197
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Check wiring between test box and 2- pin connector -1- for open circuit according to wiring diagram.
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Terminal 1 + Socket 85

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Terminal 2 + Socket 108 
Wire resistance: max. 1.5 Ohms

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Additionally check both wires for short to battery positive. 
Specification: Infinity Ohms

If no wiring malfunctions are detected:

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Perform resistance measurement at intake air temperature sender (G42) contacts 1 (signal) and 2 (Ground).

Intake Air System, Checking For Leaks (False/Unmetered Air)|Page 1199 > < Intake Air System, Checking For Leaks (False/Unmetered Air)|Page 1197