Buell Ulysses 2006, Service Manual, Page: 392 / 638

4-50 2006 Buell Ulysses: Fuel System
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Code 13 Test (Part 2 of 3)
NO.
0.0-0.4 volts.
NO.
0.6-1.0 volts.
NO.
Slow or no change.
Check continuity
between Pin 4 [11]
(gray) and [137]
(V/GY). Continuity
present?
Replace O2
sensor. See
4.33 OXYGEN
SENSOR .
YES
Repair open
on V/GY wire.
NO
Perform 4.13 FUEL
PRESSURE TEST .
Pressure too high?
NO
Perform 4.13 FUEL
PRESSURE TEST .
Pressure too low?
YES
Check for
injectors stuck
open. See 4.22
TROUBLE CODES
23 AND 32.
Retest.
NO YES
Check for restricted
fuel filter or fuel line.
Restriction
present?
NO
Check for air leaks
at induction
module. Air leak
present?
YES
Replace fuel line
or filter.
NO
Fuel injectors may be
dirty. See Fuel Injectors
under 4.42 THROTTLE
BODY.
YES
Repair.
Go to Code 13 Test
(Part 3 of 3).
STOP
YES
Repair low pres-
sure problem. See
4.13 FUEL PRES-
SURE TEST.
Replace fuel pump.
See 4.39 FUEL
PUMP .
7661
7664
7897
7663
7667
7668
Clear codes and confirm proper operation with no
check engine lamp. Codes can be cleared using
DIGITAL TECHNICIAN (Part No. HD-44750).
Continued from Code 13 Test (Part 1 of 3) .
Turn ignition OFF and reconnect O2 sensor. Turn ignition ON
and start engine. Allow engine to reach operating temperature.
With engine idling, does voltage quickly fluctuate between 0.1-
0.8 volts?