Air Switching Valve

Air Switching Valve Operation Test

Refer to the Air Suction System Damage Inspection in the Periodic Maintenance chapter.

Air Switching Valve Unit Test

• Remove the air switching valve (see Air Switching Valve Removal in the Engine Top End chapter).
• Set the hand tester [A] to the × 1 Ω range and connect it to the air switching valve terminals as shown in the figure.

Special Tool - Hand Tester: 57001-1394 Air Switching Valve Resistance Standard: 20 24 Ω at 20В°C (68В°F)

If the resistance reading is out of the specified value, replace it with a new one.

• Connect the 12 V battery [A] to the air switching valve terminals as shown in the figure.

• Blow the air to the intake air duct [A], and make sure does not flow the blown air from the outlet air ducts [B].

• Disconnect the 12 V battery.
• Blow the air to the intake air duct [A] again, and make sure flow the blown air from the outlet air ducts [B].

If the air switching valve dose not operate as described, replace it with a new one.

NOTE

To check air flow through the air switching valve, just blow through the air switching valve hose (intake side) [C].

Air Switching Valve Circuit

1. ECU

2. Air Switching Valve

3. Ignition Switch

4. Joint Connector F

5. Joint Connector A

6. Fuse Box 1

7. Ignition Fuse 15 A

8. Relay Box

9. ECU Main Relay

10. Frame Ground 1

11. Frame Ground 3

12. Starter Relay

13. ECU Fuse 15 A

14. Main Fuse 30 A

15. Battery

16. Engine Ground