With Manufacturer's Scan Tool

Secondary air injection (AIR) solenoid valve -N112-, checking

Special tools and equipment





^ Adapter set VAG1594





^ D lode test lamp VAG 1527B

Test conditions
^ Engine oil temperature 5 to 33°C
^ Secondary air injection pump motor OK
^ No DTCs must be stored in DTC memory:





Test sequence
- Pull vacuum hose off combi-valve -arrow-.
- Start engine and run at idling speed.
When secondary air pump motor runs, vacuum must be perceptible at vacuum hose from secondary air injection solenoid valve.
If no intake manifold vacuum is perceptible:
- Switch ignition off.
- Check activation of AIR solenoid valve -N112-: