With Manufacturer's Scan Tool

Secondary Air Injection (AIR) Pump Motor -V101-, Checking

Special tools and equipment







- V.A.G 1551 Scan Tool

NOTE: The vehicle system tester V.A.G 1552 can be used instead of the VAG 1551 Scan Tool, however a print-out is not possible.







- V.A.G 1551/3 Cable

Check conditions







- Fuse for Secondary air injection pump relay -J299- -arrow- located in main fuse box on battery is OK.
- No DTCs must be stored in DTC memory.
- Battery voltage must be at least 11.5 V.
- Suction hose for secondary air injection pump is not blocked or kinked.

Test sequence
- Remove engine cover.
- Disconnect pressure hose from secondary air injection pump motor.

NOTE: To release, press together the buttons on the hose coupling.

- Activate secondary air injection pump relay via Output Diagnostic Test Mode (DTM).

Secondary air injection pump motor must run at intervals, and air must exit outlet connections.

If the motor runs, but no air exits:
- Proceed with Output Diagnostic Test Mode (DTM) until completed.
- Press keys 0 and 6 for function "End output" and confirm entry with Q key.
- Switch ignition off.
- Replace Secondary Air Injection (AIR) pump motor -V101-.
- Check DTC memory.
- Read readiness code.
- Generate readiness code again if DTC memory has been erased or engine control module separated from permanent positive.

If the secondary air injection pump motor does not run at intervals:
- Check activation of secondary air injection pump motor.