Checking I

Combination Valve, Checking

Requirements
- No malfunctions stored in DTC memory.
- Final control diagnosis performed, Adapting functions and components.
- Vacuum lines and hose unions must not leak.

Work sequence

NOTE: Do not use compressed air during the following check.

- Remove engine cover.







- Remove pressure hose (arrow) from secondary air pump motor.

NOTE: Press buttons on hose couplings together to release coupling.

- Blow lightly into pressure hose to combination valve.

Combination valve must be closed.
- Blow forcibly into pressure hose to combination valve.

Combination valve must open
If combination valve does not open or is continually open:
- Replace combination valve.