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Home >> Volkswagen >> 2004 >> Passat Sedan 4Motion (3B3) W8-4.0L (BDP) >> Repair and Diagnosis >> Powertrain Management >> Emission Control Systems >> Air Injection >> Testing and Inspection
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Air Injection: Testing and Inspection



Secondary Air Injection (AIR) system, checking for proper seal

Function test
- Select the measuring value "Test-ID 03: Secondary Air Injection (AIR) system" and check whether the specified values are being reached, Diagnostic mode 6: Check test results of components that are not continuously monitored. Diagnostic Mode 6: Check Test Of Parts Not Constantly Monitored
- End diagnostic and switch ignition off.

If specified values are not obtained:

Checking proper seal

- Check the connecting lines and hoses between Secondary Air Injection (AIR) Pump Motor and combination valves for proper seal, Parts of the Secondary Air Injection (AIR) system, removing and installing.
- Repeat function test.
- Check hoses and hose connections for secure seating.
- Repeat function test.

If malfunction is no longer present:
- Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data.
- Generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes