Beetle L4-2.0L (AEG) (2000)
Air Injection Control Valve: Testing and Inspection
Combination Valve, Checking
Vehicles with engine code AEG up to 05.99:
Recommended special tools and equipment
-
VAG 1390 Hand Vacuum Pump
Test requirements
-
No leaks in vacuum lines or hose connections.
-
Vacuum hoses not clogged or kinked
-
Pressure hose for Secondary Air Injection (AIR) Pump Motor not clogged or kinked
Test sequence
NOTE: Do not use pressurized air for the following test.
-
Remove front noise insulation.
-
Disconnect vacuum hose -1- from combination valve at Secondary Air Injection (AIR) solenoid valve (N112) -2-.
-
Connect hand vacuum pump (VAG1390) at vacuum hose -1- to combination valve.
-
Disconnect pressure hose at Secondary Air Injection (AIR) pump motor (arrow) and blow into it with light pressure. Combination valve must
close.
NOTE: To disengage, compress the buttons at the hose coupling.
-
Operate vacuum pump. Combination valve must open.
If the combination valve does not open or it is constantly open:
-
Replace combination valve, item 20.
-
Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data.
-
Generate readiness code. See: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
Vehicles with engine code AEG as of 06.99, AVH, AZG, BDC
Test requirements
-
Pressure hose for Secondary Air Injection (AIR) Pump Motor not clogged or kinked.
-
Hose connections must be properly sealed.
Test sequence
NOTE: Do not use pressurized air for the following test.
-
Remove front noise insulation.