S4 V8-4.2L (BHF) (2004)
Air Injection Control Valve: Testing and Inspection
Secondary Air Injection (AIR) Solenoid Valve -N112-, Checking
Secondary Air Injection (AIR) Solenoid Valve-N112- Checking
Recommended special tools and equipment
-
V.A.G 1526A multimeter
-
V.A.G 1527 B Voltage Tester
-
V.A.G 1594A connector test kit
-
V.A.G 1598/31 test box
Test requirements:
-
Fuse for Secondary Air Injection (AIR) solenoid valve OK
-
Fuel Pump (FP) Relay OK
-
Ignition switched off.
NOTE: Voltage is supplied to Secondary Air Injection (AIR) Solenoid Valve -N112- via the Fuel Pump (FP) relay.
Procedure