Injection system — component installation locations (CCLA) (Audi A4 B8)

1. Hall sensor "G40".
2. Differential pressure sensor "G505": after replacement, adjustment must be made.
3. Fuel pressure regulating valve "N276": After replacing the high-pressure pump or the fuel pressure regulating valve "N276", it is necessary to carry out re-adaptation.
4. Plug connector: for exhaust gas temperature sensor 4 "G648".
5. Coolant temperature sensor "G62".
6. Electrical connector of exhaust gas temperature sensor 1 "G235".
7. Turbocharger control unit 1 "J724".
8. Electrical connector of the temperature sensor in the system. recirculation of OG "G98".
9. Exhaust gas temperature sensor 3 "G495".
10. Turbocharger.
11. Intake manifold flap motor "V157": cylinder bank 1; intake manifold.
12. NOx sensor "G295".
13. Lambda probe "G39".
14. Electrical connector of exhaust gas temperature sensor 3 "G495".
15. Intake manifold flap motor 2 "V275".
16. System temperature sensor. exhaust gas recirculation "G98".
17. Radiator changeover valve system. exhaust gas recirculation "N345".
18. Servo motor system. exhaust gas recirculation "V338".
19. Fuel temperature sensor "G81".
20. Pressure reducing valve: in the drainage pipes of the 1st and 2nd rows of cylinders; the task of the pressure reducing valve is to maintain residual pressure in the return fuel. the line pressure is always around 10 bar, which is necessary for the piezo injectors to operate normally; the pressure reducing valve should only be replaced as a set with the return fuel. highways; after replacement, it is necessary to let the engine run at idle. run for about 2 minutes to remove air from the fuel. syst.
21. Fuel injection pump: with fuel metering valve "N290"; after replacing the fuel injection pump, it is necessary to carry out the first refueling (to prevent dry running); after replacing the high-pressure pump or the fuel pressure regulating valve "N276", it is necessary to carry out re-adaptation.
22. Fuel metering valve "N290".
23. Oil pressure sensor for low pressure "F378".
24. Radiator pump system. exhaust gas recirculation "V400".
25. NOx sensor control unit "J583".
26. Radiator outlet coolant temperature sensor "G83".
27. Injection modules (piezo injectors): cylinder bank 1.
28. Air flow meter "G70".
29. Air bypass valve. filter "N275": units (bypass damper with air bypass damper valve. filter "N275") are not installed in all equipment variants and not for all countries; if a bypass damper is installed, it is located in the air duct housing. filter, and air bypass valve. the "N275" filter is attached to the outside of the air intake housing. filter.

1. Exhaust gas temperature sensor 3 "G495".
2. NOx sensor "G295".
3. Lambda probe "G39".
4. Engine control unit "J623".
5. Boost pressure sensor -G31-: with intake air temperature sensor "G42".
6. Throttle control unit "J338": 9 Nm.
7. Injection modules (piezo injectors): cylinder bank 2.
8. Fuel pressure sensor "G247".
9. Connector for lambda probe "G39".
10. Fuel injection pump: with fuel metering valve "N290"; after replacing the fuel injection pump, it is necessary to carry out the first refueling (to prevent dry running); after replacing the high-pressure pump or the fuel pressure regulating valve "N276", it is necessary to carry out re-adaptation.
11. Fuel metering valve "N290".
12. Servo motor system. exhaust gas recirculation "V338".
13. Radiator changeover valve system. exhaust gas recirculation "N345".
14. System temperature sensor. exhaust gas recirculation "C98".
15. Electrical connector of exhaust gas temperature sensor 3 "G495".
16. Intake manifold flap motor 2 "V275".
A. Relay and fuse block in the switchboard. block in the left water drainage box.
B. Low-power heating relay "J359" and high-power heating relay "J360".
C. Brake light switch "F" and brake pedal switch "F47": in the footwell on the brake pedal.
D. Accelerator pedal position sensor "G79" and accelerator pedal position sensor 2 "G185".
E. Exhaust gas temperature sensor 1 "G235": on the turbocharger; 45 Nm.
F. Engine speed sensor "G28".
G. Add. fuel pump "V393".
H. Oil pressure sensor "F22".
I. Oil pressure regulating valve "N428".
J. Glow plugs: Glow plug 1 "Q10". Glow plugs 2 "Q11" with combustion chamber pressure sensor for cyl. 2 "G678". Glow plug 3 "Q12". Glow plug 4 "Q13". Glow plugs 5 "Q14" with combustion chamber pressure sensor for cyl. 5 "G681". Glow plug 6 "Q15".
K. Diesel particulate filter: installed on the bottom; one-piece unit with catalyst; after replacement, adjustments must be made.