Jetta SportWagen L5-2.5L (CBUA) (2009)
Air Injection Vacuum Control Solenoid Valve: Testing and Inspection
Generic Scan Tool
Secondary Air Injection Solenoid Valve, Checking
Special tools, testers and auxiliary items required
‹› multimeter.
‹› Wiring diagram.
Test requirements
‹› The Secondary Air Injection (AIR) Solenoid Valve (-N112-) fuse OK.
‹› The Motronic Engine Control Module (ECM) Power Supply Relay (J271) fuse OK.
‹› Battery voltage at least 12.5 V.
‹› All electrical consumers switched off (radiator fan must NOT run during test).
‹› A/C switched off.
‹› The ignition switched off.
Test procedure
-
Perform a preliminary check to verify the customers complaint. Refer to --> [ Preliminary Check ] See: Computers and Control Systems/Testing
and Inspection/Scan Tool Testing and Procedures/Preliminary Check.
Start diagnosis
‹› Voltage is supplied to the Secondary Air Injection (AIR) Solenoid Valve (N112) from the Motronic Engine Control Module (ECM) Power Supply
Relay (J271).
Procedure
-
Disconnect the Secondary Air Injection (AIR) Solenoid Valve (N112) electrical harness connector - 1 -.
Checking internal resistance
-
Using a multimeter, check the Secondary Air Injection (AIR) Solenoid Valve (N112) terminals 1 to 2 for resistance.
Specified value: 3.5- 8.5ohms (at approx. 20 °C)
If the specified value was not obtained: