Test Procedure

WARNING: This page is about a different car, the 2018 Audi A3 Quattro, 2017 Audi A3 Quattro, 2016 Audi A3 Quattro, 2016 Audi A3, and 2015 Audi A3 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

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 - 100 seconds. Once the engine has been started, the ECM may not command the pump to run again for approx. 6-8 hrs of engine off time. Due to potential damage to the catalyst, the generic scan tool has no provision for SAI relay control.

Step	Procedure	Result / Action to Take
1	PERFORM: Preliminary Check to verify the customers complaint. Refer to PRELIMINARY CHECK . -- Was Complaint verified?	-- YES: GO TO: Step 2. -- NO: GATHER more information from customer about the complaint.
2	IGNITION: OFF. REMOVE: Secondary Air Injection Pump Relay -J299- from fuse box. Refer to appropriate Service Information. IGNITION: ON. For TT vehicles: CHECK: Secondary Air Injection Pump Relay -J299- socket terminals 1/86 and 3/30 to ground for voltage. For A3 vehicles: CHECK: Secondary Air Injection Pump Relay -J299- socket terminals 1/86 and 5/87 to ground for voltage. IGNITION: OFF. SPECIFIED VALUE: Battery Voltage. -- Were Values obtained?	-- YES: GO TO: Step 3. -- NO: PERFORM: Visual Inspection of wiring and component. CHECK: Wiring for open, high resistance, short or harness connector for damage, corrosion, loose or broken terminals. REPAIR: Faulty wiring or connector. GO TO: Step 6.
3	CONNECT: Jumper wire, between the Secondary Air Injection Pump Relay -J299- socket terminals 3/30 and 5/87. IGNITION: ON. SPECIFIED VALUE: Secondary Air Injection Pump Motor -V101- Should Be Heard Running. IGNITION: OFF. -- Was Value obtained?	-- YES: GO TO: Step 4. -- NO: GO TO: Step 5.
4	REMOVE: Jumper wire, between the Secondary Air Injection Pump Relay -J299- socket terminals 3/30 and 5/87. REMOVE: Engine Control Module -J623-. Refer to appropriate Service Information. CHECK: Secondary Air Injection Pump Relay -J299- socket terminal 2/85 to the Engine Control Module -J623- harness connector T105 / 60 for resistance. SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω). -- Was Value obtained?	-- YES: REPLACE: Secondary Air Injection Pump Relay -J299-. Refer to appropriate Service Information. GO TO: Step 6. -- NO: PERFORM: Visual Inspection of wiring and component. CHECK: Wiring for open, high resistance, short or harness connector for damage, corrosion, loose or broken terminals. REPAIR: Faulty wiring or connector. GO TO: Step 6.
5	REMOVE: Jumper wire, between the Secondary Air Injection Pump Relay -J299- socket terminals 3/30 and 5/87. DISCONNECT: Secondary Air Injection Pump Motor -V101- harness connector. For TT vehicles: CHECK: Secondary Air Injection Pump Relay -J299- socket terminal 5/87 to the Secondary Air Injection Pump Motor -V101- harness connector terminal 2 for resistance. For A3 vehicles: CHECK: Secondary Air Injection Pump Relay -J299- socket terminal 3/30 to the Secondary Air Injection Pump Motor -V101- harness connector terminal 2 for resistance. CHECK: Secondary Air Injection Pump Motor -V101- harness connector terminal 1 to ground for resistance. SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω). -- Were Values obtained?	-- YES: REPLACE: Secondary Air Injection Pump Motor -V101-. Refer to appropriate Service Information. GO TO: Step 6. -- NO: PERFORM: Visual Inspection of wiring and component. CHECK: Wiring for open, high resistance, short or harness connector for damage, corrosion, loose or broken terminals. REPAIR: Faulty wiring or connector. GO TO: Step 6.
6	Final Procedure Perform a road test to verify repair. -- Does the original DTC return?	-- YES: CHECK: Engine Control Module -J623- harness connector for any damaged, pushed-out pins. REPAIR: As necessary. If all electrical connections are OK: REPLACE: Engine Control Module -J623-. Refer to appropriate Service Information. Clear the DTC's. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY . Repair is complete. Generate Readiness Code. Refer to READINESS CODE . Return vehicle to Customer. -- NO: Perform the diagnostic procedure for any DTC's. If no DTC's return, the repair is complete. Return vehicle to customer.