Touareg V10-5.0L DSL Turbo (BKW) (2004)
Terminal 1+socket 40
Terminal 2+socket 39
Wire resistance: max. 1.5ohms
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Also check wires for short circuit to each other, to vehicle Ground (GND) and to B+.
Specified value: infinite ohms
If no malfunctions are found in wires:
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Replace Engine Control Module 2 (J624).