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

WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

Special tools, testers and auxiliary items required

Multimeter.
Wiring diagram.

Test requirements

Fuse S130 OK.
The Fuel Pump (FP) Relay J17 OK.
Battery voltage at least 12.5 V.
All electrical consumers switched off (radiator fan must NOT run during test).

A/C switched off.
The ignition switched off.

Procedure

Fig 1: Noise Insulation Tray Retainers

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Remove the center noise insulation fasteners - arrows - and noise insulator.

Fig 2: Disconnecting Connector From Secondary AIR Pump Motor V101

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Disconnect the Secondary Air Injection (AIR) Pump Motor -V101- electrical harness connector.

Checking voltage

Crank the engine.

Fig 3: Identifying 2-Pin Electrical Connector & Terminals

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Using a Multimeter , check the Secondary Air Injection (AIR) Pump Motor -V101- electrical harness connector terminal 2 to Ground (GND).

Specified value: battery voltage.

Switch the ignition off.

If the specified value was not obtained:

Check the wiring connection from the Secondary Air Injection (AIR) Pump Relay -J299- socket 2/30 to the Secondary Air Injection (AIR) Pump Motor -V101- electrical harness connector terminal 2 for an open circuit or a short circuit.
Check the wiring connections for damage, corrosion, lose or broken terminals.
If necessary, repair the faulty wiring connection.

If the specified value was obtained:

Checking Ground (GND)

Fig 4: Identifying 2-Pin Electrical Connector & Terminals

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Using a Multimeter , check the Secondary Air Injection (AIR) Pump Motor -V101- electrical harness connector terminal 1 to Ground (GND) for resistance.

Specified value: 1.5 Ω Max.

If the specification was not obtained:

Check the wiring for a short circuit to each other, Battery (+), and Ground (GND).
Check the electrical harness connector for damage, corrosion, lose or broken terminals.
If necessary, repair the faulty wiring connection.

If no malfunction is found in the wiring and voltage supply was OK:

Replace Secondary Air Injection (AIR) Pump Motor -V101- → 26 - EXHAUST SYSTEM, EMISSION CONTROLS .

Final procedures

After the repair work, the following work steps must be performed in the following sequence:

Check the DTC memory.
If necessary, erase the DTC memory. Refer to Diagnostic Mode 04: Reset/delete diagnostic data .
If the DTC memory was erased, generate readiness code. Refer to Readiness Code .

End of diagnosis.