Secondary Air Injection (AIR) Pump Motor V101 , checking

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Special tools, testers and auxiliary items required

Fault Read Out Device V.A.G 1551 or Vehicle Diagnosis, Testing and Information System VAS 5051B

Test conditions

Fig 1: Locating Secondary Air Injection Pump Relay J299 Fuse

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Secondary Air Injection (AIR) Pump Relay J299 fuse - arrow - in main fuse box on battery OK.
There must be no malfunctions stored in DTC memory.
Battery voltage must be at least 11.5 Volts.
Secondary air injection (AIR) intake hose is not sealed or kinked.

Test sequence

Remove engine cover.
Install pressure hose on Secondary Air Injection (AIR) Pump Motor V101.

NOTE:

To disengage, compress the buttons at the hose coupling.

Activate Secondary Air Injection (AIR) Pump Relay J299 via output diagnostic test mode (DTM).
The Secondary Air Injection (AIR) Pump Motor V101 must start in intervals and air must escape at exhaust connection.

If motor starts, but no air escapes:

Continue with output diagnostic test mode to end.
Press buttons 0 and 6 for function "End output" and press Q button to confirm input.
Switch off ignition.
Replace Secondary Air Injection (AIR) Pump Motor V101.

Check DTC memory.
Read readiness code.
If DTC memory was cleared or engine control module disconnected from voltage supply, readiness code must be regenerated.

If Secondary Air Injection (AIR) pump motor does not start up in intervals:

Check secondary air injection (AIR) pump motor activation.