A8L Quattro Sedan V8-4.2L (AKB) (2002)
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Reading Display Group 002
Reading Display Group 002
Checking voltage supply to air mass meter
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Disconnect harness connector from air mass meter.
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Connect hand-held multimeter (voltage measurement range) between engine Ground (GND) and socket 2 of connector.
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Operate starter briefly. Specification: approx. battery voltage
