Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSVOLKSWAGEN2003PASSAT SEDAN 4MOTION (3B3) V6-2.8L (ATQ)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTEMISSION CONTROL SYSTEMSAIR INJECTIONSERVICE AND REPAIR
2003 Volkswagen Passat Sedan 4Motion (3B3) V6-2.8L (ATQ)
Air Injection: Service and Repair
2003 Volkswagen Passat Sedan 4Motion (3B3) V6-2.8L (ATQ)SECTION Service and Repair
Connecting Pipe And Combi-valves - Assembly Overview
Notes:
^ Components marked with an * are checked by the on board diagnostics:
^ Checking DTC memory refer to Powertrain Management; Computers and Control Systems
^ Components marked with ** are checked by the Output Diagnostic Test Mode (DTM)
^ Checking DTM refer to Powertrain Management; Computers and Control Systems
^ Secondary Air Injection (AIR) pump relay -J299-, Fig.1
1. Left combi-valve
2. Gasket
^ Always replace
3. 10 Nm (7 ft. lbs.)
4. 25 Nm (18 ft. lbs.)
5. Y piece
6. Secondary Air Injection (AIR) Solenoid Valve -N112- */**
7. 6 Nm (53 inch lbs.)
8. From vacuum reservoir
^ Installation location: In left wheel housing
9. Right combi-valve
10. Gasket
^ Always replace
11. Connection
12. Gasket
^ Always replace
13. Pressure hose
^ Ensure seated tightly
^ Press together at front to release
14. O-ring
^ Always replace
15. Connecting pipe
16. Connection
Notes:
^ Components marked with an * are checked by the on board diagnostics:
^ Checking DTC memory refer to Powertrain Management; Computers and Control Systems
^ Components marked with ** are checked by the Output Diagnostic Test Mode (DTM)
^ Checking DTM refer to Powertrain Management; Computers and Control Systems
^ Secondary Air Injection (AIR) pump relay -J299-, Fig.1
1. Left combi-valve
2. Gasket
^ Always replace
3. 10 Nm (7 ft. lbs.)
4. 25 Nm (18 ft. lbs.)
5. Y piece
6. Secondary Air Injection (AIR) Solenoid Valve -N112- */**
7. 6 Nm (53 inch lbs.)
8. From vacuum reservoir
^ Installation location: In left wheel housing
9. Right combi-valve
10. Gasket
^ Always replace
11. Connection
12. Gasket
^ Always replace
13. Pressure hose
^ Ensure seated tightly
^ Press together at front to release
14. O-ring
^ Always replace
15. Connecting pipe
16. Connection
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.