Removal/installation
Remove the fuel tank (page 5-50).
Disconnect the intake duct control solenoid valve 2P connector.
![](https://motoinstruction.ru/img/honda/9/115702.jpg)
Disconnect the vacuum hoses from the intake duct control solenoid valve.
Remove the bolt and intake duct control solenoid valve.
![](https://motoinstruction.ru/img/honda/9/115703.jpg)
Disconnect the vacuum hose and remove the vacuum chamber.
Check the vacuum chamber for scratches or damage, and replace it if necessary.
Installation is in the reverse order of removal.
![](https://motoinstruction.ru/img/honda/9/115704.jpg)
Inspection
Remove the intake duct control solenoid valve.
Check that the air should not flow from (A) to (B), only when the 12-V battery is connected to the intake duct control solenoid valve terminals.
![](https://motoinstruction.ru/img/honda/9/115705.jpg)
Check the resistance between the terminals of the intake duct control solenoid valve.
Standard: 28-32 Ω (20°С/68°F)
If the resistance is out of specification, replace the intake duct control solenoid valve.
![](https://motoinstruction.ru/img/honda/9/115706.jpg)
One-way valve
Disconnect the vacuum hoses and remove the one-way valve.
![](https://motoinstruction.ru/img/honda/9/115707.jpg)
Check the one-way valve operation as follows:
- Air should flow from (A) to (B).
- Air should flow from (A) to (C).
- Air should not flow from (B) to (A).
- Air should not flow from (B) to (C).
If the operation is incorrect, replace the one-way valve.
![](https://motoinstruction.ru/img/honda/9/115708.jpg)