A4 Sedan V6-2.8L (AFC) (1996)
Air Injection Pump: Testing and Inspection
SECONDARY AIR INJECTION (AIR) PUMP MOTOR, CHECKING:
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Use scan tool "Output Diagnostic Test Mode" function 03 to trigger relay for Secondary Air Injection (AIR) pump relay -J299-. Motor is triggered
for 10 seconds, See: Computers and Control Systems/Testing and Inspection.
The sound of the motor running should be heard.
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End output diagnostic test mode.
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Disconnect 2-pin harness connector from connector from secondary air injection pump motor -V101-.
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Connect VAG 1527B voltage tester with connector test kit VW1594 across the two connector terminals.
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Switch ignition on.
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Use scan tool "Output Diagnostic Test Mode" function 03 to trigger secondary air injection pump relay -J299-.
Voltage tester LED must light up for approx. 10 seconds.
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Replace motor -V101-.
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Check wiring between motor -V101-, relay -J299-, and Ground (GND) using wiring diagram.
If wiring is OK:
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Check relay -J299-.