S4 V8-4.2L (BHF) (2004)
Active Exhaust System Actuator: Testing and Inspection
Exhaust Flap Valve 1 -N321-, checking
Special tools, testers and auxiliary items required
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Multimeter V.A.G 1526 B or V.A.G 1526 A
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Voltage tester V.A.G 1527 B
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Connector test kit V.A.G 1594 C or V.A.G 1594 A
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Test box 1598/31
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Vehicle Diagnostic, Testing and Information System VAS 5051 A with diagnostic cable VAS 5051/1
Work sequence
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Remove left side trim in luggage compartment
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Disconnect electrical harness connector - arrow - from Exhaust Flap Valve 1 -N321-.
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Check internal resistance.