Secondary Air Intake Valve Checking

Secondary air intake valve, checking
Check conditions
^ Coolant temperature 5 to 33°C
^ Secondary air 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 starts, the vacuum must be felt on vacuum hose.

If no intake manifold vacuum is perceptible:
^ Switch off engine.
^ Check activation of valve.