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16-66 ELECTRICAL SYSTEM
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).
•
Connect a tester [A] to the air switching valve terminals
as shown.
Air Switching Valve Resistance
Standard: 20
∼ 24 Ω at 20°C (68°F)
If the resistance reading is out of the specified value, re-
place it with a new one.
•
Connect the 12 V battery [A] to the air switching valve
terminals as shown.
•
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 duct [B].
If the air switching valve does not operate as described,
replace it with a new one.
NOTE
â—‹
To check air flow through the air switching valve, just
blow through the air switching valve hose (intake side)
[C].
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