Passat Sedan V6-2792cc 2.8L DOHC (AAA) SFI (1997)
Air Injection Pump: Testing and Inspection
CHECKING SECONDARY AIR INJECTION PUMP MOTOR
REQUIREMENTS
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Fuse on Secondary Air Injection (AIR) Pump Relay (J299) (arrow) OK.
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Engine oil temperature 15 - 85°C (58 - 185°F).
PROCEDURE
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Disconnect pressure hose from AIR Inlet Valve, and route upwards.
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Start engine and run at idle.
NOTE: After approx. 20 seconds, the AIR Pump Motor (V101) should run for approx. 5 seconds, and secondary air must exit from pressure
hose.
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If the AIR Pump Motor does NOT run:
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Stop engine.
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Disconnect 2-pin connector from AIR Pump Motor.
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Connect VAG 1527B voltage tester to the open connector using cables from VAG 1594 adapter kit.
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Start engine and run at idle.
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After approx. 20 seconds, LED must light for approx. 5 seconds.
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If LED lights (voltage supply OK):
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Replace Secondary Air Injection Pump Motor.
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If LED does NOT light:
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Reconnect 2-pin connector.
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Check activation of Secondary Air Injection Pump Motor. Refer to: How to Display and Read Diagnostic Codes / Output Diagnostic Test
Mode.
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If Secondary Air Injection Pump Motor does NOT run during the electrical check:
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Check for malfunction of Secondary Air Injection Pump Relay. Refer to Wiring Diagrams.
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Check Diagnostic Trouble Code (DTC) Memory.