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1.Remove the vacuum hoses
(blue stripe, yellow stripe) from the solenoid
valves.
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2.Disconnect the harness
connectors.
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3.Connect a hand vacuum pump
to solenoid valve A and carry out the following
inspections. (1)
Even if the hand pump is operated with no other operation,
no negative pressure develops. (2)
Negative pressure does not develop when battery voltage is
applied to solenoid valve A. Negative pressure is maintained
when the vacuum hose of solenoid valve B is blocked by
bending. (3)
When battery voltage is applied to solenoids A and B,
negative pressure is maintained.
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4.Connect the hand vacuum
pump to solenoid valve B. Apply negative pressure and carry
out the following inspections. (1)
With no change, negative pressure is maintained. (2)
When battery voltage is applied to solenoid valve B, the
vacuum shuts off. (3)
When battery voltage is applied to solenoid valve A, the
vacuum shuts off. 5.Measure the resistance of the
solenoid valves. Standard value : 36 - 46
Ω
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