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ELECTRICAL SYSTEM 16-67
Air Switching Valve
Air Switching Valve Operation Test
•
Refer to the Air Suction System Damage Inspection in the
Periodic Maintenance chapter (see Air Suction System
Damage Inspection in the Periodic Maintenance c hapter).
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 × Ω range and connect it to
the air switching valve terminals as shown.
Special Tool - Hand Tester: 57001-1394
Air Switching Valve Resistance
Standard: 18 ∼ 22 Ω at 20°C (68°F)
If the resistance reading is except 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 inlet 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 inlet 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 v alve, just
blow through the air switching v alve hose (inlet side)
[C].
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