Injection system — component installation locations (CAMA, CAMB, CCWA, CCWB, CGKA, CGKB) (Audi A4 B8)

1. 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.
2. Air flow meter "G70".
3. Hall sensor "G40" (camshaft position sensor).
4. 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.
5. Exhaust gas pressure sensor 1 "G450": after replacement, adjustment must be made.
6. Plug connector: exhaust gas temperature sensor 4 "G648" (CAMA, CAMB, CCWA, CCWB, CGKA, CGKB), exhaust gas temperature sensor 3 cylinder bank 1 "G496" (CAPA).
7. Coolant temperature sensor "G62".
8. Exhaust gas temperature sensor 4 "G648" (CAMA, CAMB, CCWA, CCWB, CGKA, CGKB): exhaust gas temperature sensor 3 cylinder bank 1 "G496" (CAPA).
9. Turbocharger control unit 1 "J724".
10. Electrical connector of the exhaust gas temperature sensor 1 "G235": installed only on vehicles with engine letter designations CAPA, CCWA, CCWB; exhaust gas temperature sensor 1 "G235".
11. Intake manifold flap motor "V157": cylinder bank 1; intake manifold.
12. Connecting the return fuel. highways.
13. Fuel connection. highways.
14. Oil pressure sensor: oil pressure sensor "F1" on engines with the letter designation CAPA, CAMA, CAMB; oil pressure sensor for low pressure "F378" on engines with the letter designation CCWA, CCWB, CGKA, CGKB.
15. Radiator pump system. exhaust gas recirculation "V400".
16. Fuel temperature sensor "G81".
17. Radiator outlet coolant temperature sensor "G83".
18. Pressure reducing valve: in the drainage pipes of the 1st and 2nd rows of cylinders; the function of the pressure reducing valve is to ensure residual pressure in the return fuel. highways (scope of control) approx. 10 bar, which is necessary for 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.
19. Injection modules (piezo injectors): cylinder bank 1.

1. Plug connector: exhaust gas temperature sensor 3 "G495" (CAMA, CAMB, CCWA, CCWB, CGKA, CGKB), exhaust gas temperature sensor 2 "G448" (CAPA).
2. Exhaust gas temperature sensor 3 "G495" (CAMA, CAMB, CCWA, CCWB, CGKA, CGKB): exhaust gas temperature sensor 2 "G448" (CAPA); installed behind the catalytic converter; 45 Nm.
3. Lambda probe "G39" with lambda probe heating element "Z19": 50 Nm.
4. Intake manifold flap motor 2 "V275": cylinder bank 2; intake manifold.
5. Plug connector of the lambda probe "G39".
6. Engine control unit "J623".
7. Boost pressure sensor -G31-: with intake air temperature sensor "G42".
8. Throttle control unit "J338": 9 Nm.
9. Fuel pressure sensor "G247".
10. Injection modules (piezo injectors): cylinder bank 2.
11. Radiator changeover valve system. exhaust gas recirculation "N345".
12. Servo motor system. exhaust gas recirculation "V338".
13. Fuel injection pump: with fuel metering valve "N290"; on vehicles with CAMA, CAMB, CCWA, CCWB, CGKA, CGKB engines, after replacing the fuel injection pump, the first refueling should be performed (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.
14. Fuel metering valve "N290": do not open; installed directly into the fuel injection pump.
15. System temperature sensor. exhaust gas recirculation "G98".
16. Temperature sensor connector in the system. exhaust gas recirculation "G98".
17. Vacuum tank: for switching valve system. exhaust gas recirculation.
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": installed only on CAPA, CCWA, CCWB vehicles; on a turbocharger; 45 Nm.
F. Engine speed sensor "G28".
G. Additional fuel pump "V393": installed only on engines: CAMA, CAMB, CCWA, CCWB, CGKA, CGKB.
H. Oil pressure sensor "F22": installed only on engines: CCWA, CCWB, CGKA, CGKB.
I. Oil pressure regulating valve "N428": installed only on engines: CCWA, CCWB, CGKA, CGKB.
J. Diesel particulate filter: mounted on the bottom; one-piece unit with catalyst; after replacement, adjustments must be made.