A4 Quattro Wagon L4-1.8L Turbo (AWM) (2001)
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Switch ignition on.
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Specification: about 5 V
Checking signal wire
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Connect multimeter for voltage measurement as follows:
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Switch ignition on.
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Specification: approx. battery voltage
Checking Ground (GND) wire
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Check the following wire connection for open circuit and short circuit to B+:
