Checking secondary air pump relay J299 or J316 and activation — AUDI

🧭 Before you start

Fits: Audi A4 B5 (8D)

• Special tools named: V.A.G 1598/31
• Renewed: secondary air pump

Don't miss

• Connect test boxV.A.G 1598/22 or V.A.G 1598/31 to wiring harness leading to engine control unit, but do not connect engine control unit itself 24.

🔧 Engine codes this applies to

📋 Procedure

1. From the menu (1) select the diagnostic function "“03 - Final control diagnosis”".
2. Tap the → key repeatedly until the secondary air pump relay J299 or J316 is activated.
3. Exit function "“03 - Final control diagnosis”" by pressing the ← key, and switch off the ignition.
4. Check voltage supply of secondary air pump relay J299 or J316.
5. Check activation of secondary air pump relay J299 or J316.

6. Check voltage supply for secondary air pump motor V101.
7. Run windscreen wipers to the vertical position.
8. Detach rubber seal from plenum chamber cover in direction of (arrow).
9. Detach plenum chamber cover (1) towards the front.
10. Remove cover for electronics box in plenum chamber (arrows).
11. Disconnect secondary air pump relay J299 or J316(item 2).
12. Connect multimeter (voltage measuring range) between relay socket, contact (8) and earth.
13. Check secondary air pump fuse S130 in position (4) on relay and fuse holder in electronics box (plenum chamber).
14. Use current flow diagram to check for open circuit in wiring from battery + (terminal 30), via secondary air pump fuse S130 in position (4), to secondary air pump relay J299 or J316(item 2) in electronics box (plenum chamber).
15. Connect multimeter (voltage measuring range) between relay socket, contact 4 and earth.
16. Operate the starter briefly.
17. Repair wiring harness according to current flow diagram.
18. Switch off ignition.
19. Disconnect secondary air pump relay J299 or J316.
20. Connect up voltage testerV.A.G 1527 B between relay socket contact (6) and battery positive.
21. Repeat function "“03 - Final control diagnosis”".
22. Tap the → key repeatedly until the secondary air pump relay J299 or J316 is activated.
23. Exit function "“03 - Final control diagnosis”" by pressing the ← key, and switch off the ignition.
24. Connect test boxV.A.G 1598/22 or V.A.G 1598/31 to wiring harness leading to engine control unit, but do not connect engine control unit itself 24.
25. Check for open circuit and short to positive or earth in the following wiring:
26. Repair wiring connection if necessary.
27. Renew secondary air pump relay J299 or J316.
28. Remove noise insulation (arrows).
29. Unplug electrical connector (2) at secondary air pump motor V101(item 1).
30. Connect voltage testerV.A.G 1527 B between contacts (1) and (2).
31. Repeat function "“03 - Final control diagnosis”".
32. Tap the → key repeatedly until the secondary air pump relay J299 or J316 is activated.
33. Exit function "“03 - Final control diagnosis”" by pressing the ← key, and switch off the ignition.
34. Use current flow diagram to check for open circuit in wiring between connector at secondary air pump motor V101 and secondary air pump relay J299 or J316, (item 2) (in electronics box in plenum chamber).
35. Use current flow diagram to check for open circuit in wiring between connector at secondary air pump motor V101 and earth.
36. Renew secondary air pump.

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