S4 V8-4.2L (BHF) (2004)
Display on VAS 5051 A:
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In selection - 1 -, click on function "03 - output Diagnostic Test Mode (DTM)".
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Press button repeatedly until Secondary Air Injection (AIR) Pump Relay -J299- is activated.
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Secondary Air Injection (AIR) Pump Relay -J299- - item 2 - (in electronics box, in plenum chamber) must engage and Secondary Air Injection
(AIR) Pump Motor -V101- must run in intervals.
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End function "03 - output Diagnostic Test Mode (DTM)" by pressing button.
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Select "06 - End Output".
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Switch ignition off.
A. If relay does not trigger:
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Check voltage supply of Secondary Air Injection (AIR) Pump Relay -J299-
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Check activation of Secondary Air Injection (AIR) Pump Relay -J299-
B. If relay triggers, but Secondary Air Injection (AIR) Pump Motor -V101- does not run:
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Check voltage supply for Secondary Air Injection (AIR) Pump Motor -V101-.
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Checking voltage supply for Secondary Air Injection (AIR) Pump Relay -J299-
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Fuse in fuse holder -S234- (position - 34 - ) OK
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Switch ignition off.
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Pull off rubber seal of plenum chamber cover in direction of - arrow -
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Remove plenum chamber cover - 1 - toward front.