Secondary Air Injection Pump Relay And Pump Motor, Checking: Notes

Observe all safety precautions: SAFETY PRECAUTIONS .

View clean working conditions: CLEAN WORKING CONDITIONS .

Use only gold-plated terminals when servicing any component with gold-plated electrical harness connector terminals.

For wiring diagrams, component locations, and connector views, Refer to the appropriate System Wiring Diagram.

Special tools and workshop equipment required

Multimeter.
Wiring diagram.

Test requirements

Secondary Air Injection (AIR) Pump Relay - J299 - fuses OK.
Motronic Engine Control Module Power Supply Relay - J271- fuse OK.
Battery voltage at least 12.5 V.
All electrical consumers switched OFF.
A/C switched OFF.
The ignition switched OFF.

Test procedure

-- Perform a preliminary check to verify the customers complaint. Refer to PRELIMINARY CHECK .

NOTE:

The engine MUST be cold (room temperature) in order for the ECM to command the air pump relay ON. The pump runs for approximately 20 seconds. Once the engine has been started, the ECM will not command the pump to run again for Approx. 6-8 hrs.

Due to potential damage to the catalyst, the generic scan tool has no provision for SAI relay control.

Start diagnosis

-- Remove the Secondary Air Injection (AIR) Pump Relay -J299-. Refer to the appropriate Service Information. -1-.

Fig 1: Locating Secondary Air Injection (AIR) Pump Relay -J299

Courtesy of AUDI OF AMERICA, LLC

-- Using a jumper wire, connect Secondary Air Injection (SAI) Pump Relay --J299- - socket terminal 1 to socket terminal 5.

-- Switch the ignition ON.

Specified value: The secondary Air Injection (AIR) Pump Motor -V101- should be running.

-- Switch the ignition OFF.

-- Remove the Jumper wire.

-- Continue test according to the following table:

Indicated	Test
If the pump does Not operate when using a jumper wire at the relay:	SECONDARY AIR INJECTION PUMP RELAY AND PUMP MOTOR, CHECKING => If the pump does Not operate when using a jumper at the relay
If the pump does operate when using a jumper wire at the relay:	SECONDARY AIR INJECTION PUMP RELAY AND PUMP MOTOR, CHECKING => If the pump does operate when using a jumper at the relay