2002 Buell S3T: Fuel System 4-37
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Test 4.14 (Part 1 of 2)
Run fuel pressure test as described under
INSPECTION. Fuel pressure should remain
steady at 46-53 PSI (317-365 kPa). Does it?
Flush out fuel cell
and clean inlet
screen. See 4.39
FUEL PUMP.
YES
No trouble
found. Review
symptoms.
YES
Check for faulty fuel
pump and replace.
See 4.39 FUEL PUMP.
NO
Check for faulty fuel
pump and replace.
See 4.39 FUEL
PUMP.
Low pressure. High pressure.
7455
7461
7459
Check voltage drop between
battery positive (+) and Termi-
nal D (-) on pump side of con-
nector [89] during first two
seconds after key ON. Is volt-
age greater than 1 VDC?
Check for restricted
pump inlet screen. Is
screen restricted?
NO
Move negative (-) probe to GY
wire on Terminal 87 of ignition
relay. Measure voltage during
first two seconds after key ON.
Is voltage greater than 1 VDC?
YES
Locate and repair poor
connection between ignition
relay and fuel pump.
NO
Move negative (-) probe to
GY/O wire on Terminal 30 of
ignition relay. Measure voltage
during first two seconds after
key ON. Is voltage greater
than 1 VDC?
YES
Locate and repair poor
connection between bat-
tery and ignition relay.
NO
Replace ignition relay.
See Section 7.
YES
7457
7458
7456
Go to Test 4.14
(Part 2 of 2).
STOP
No pressure.
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