volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Intake Air Temperature Sensor|Testing and Inspection|Page 1823 > < Intake Air Temperature Sensor|Testing and Inspection|Page 1821
Page 5
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Connect VAG1598/31 test box to control module wiring harness. Engine Control Module (ECM) is not connected.

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Disconnect 5-pin connector from Mass Air Flow (MAF) sensor -G70- with Intake Air Temperature (IAT) sensor -G42- (arrow).

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Check wires between test box and 5-pin connector for open circuits according to wiring diagram.

Terminal 1 + socket 26
Terminal 3 + socket 27

Wire resistance: max: 1.5 Ohms

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Also check wire for short circuit to B+. Specification: Infinity Ohms

If no malfunctions are found in wire:

Intake Air Temperature Sensor|Testing and Inspection|Page 1823 > < Intake Air Temperature Sensor|Testing and Inspection|Page 1821