5-25
Fuel control unit and component
Checking the vapor shut-off valve
1.
Measure:
• Vapor shut-off valve input voltage
Out of specification
Check the wire har-
ness for continuity.
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a.
Disconnect the vapor shut-off valve cou-
pler “a”.
b.
Turn the engine start switch to ON, and
then measure the input voltage between
the vapor shut-off valve coupler terminal
and ground.
c.
Turn the engine start switch to OFF.
d.
Connect the vapor shut-off valve coupler.
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2.
Check:
• Vapor shut-off valve operation
Not operating
Replace.
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a.
Remove the vapor shut-off valve, and then
connect the special service tool “1” to the
vapor shut-off valve.
b.
Apply the specified negative pressure to
the vapor shut-off valve.
c.
Check that the vapor shut-off valve opens
and the negative pressure is released
when the battery leads are connected to
the vapor shut-off valve terminals.
Connect the battery leads to the vapor
shut-off valve terminals for only a few sec-
onds.
d.
Disconnect the special service tool.
e.
Install the vapor shut-off valve.
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3.
Measure:
• Vapor shut-off valve resistance
Out of specification
Replace.
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a.
Disconnect the vapor shut-off valve cou-
pler.
b.
Measure the resistance between the vapor
shut-off valve terminals.
c.
Connect the vapor shut-off valve coupler.
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Input voltage
12 V
Red/Yellow (R/Y)–Ground
R/Y
a
Vacuum/pressure pump gauge
set “1”
90890-06945
Pressure/vacuum tester “1”
YB-35956-B
Specified negative pressure
67.0 kPa (0.67 kgf/cm², 9.7 psi)
Resistance
30.0–34.0
1
Summary of Contents for F30B 2018
Page 1: ...6BG 28197 ZX 11 LIT 18616 03 84 USA CAN AUS and NZL Worldwide 6BG 6BT 6BG 6BT ...
Page 22: ...1 Specification Specification data 1 1 External dimensions 1 1 Clamp bracket dimensions 1 9 ...
Page 35: ...2 3 Electronic control system Electrical components 3 4 5 6 7 8 9 10 11 1 2 ...
Page 178: ...7 23 Wire harness 2 3 1 a c b 3 4 5 ...
Page 342: ...Jul 2018 ABE E ...