Buell 2008 XB SERIES Electrical Diagnostics Manual page 99

Fuel Pressure Test (Part 2 of 2)
1
YES
Replace Fuel Pump
assembly. See FUEL
PUMP in appropriate
Buell Service Manual.
Continued from Fuel Pressure Test (Part
1 of 2).
Check for battery voltage at terminal "3" (O/
GY) on fuel pump connector [86A].
Is battery voltage present?
YES
Connect test lamp to battery positive (+)
terminal. Probe fuel pump connector [86B]
terminal "4" (BN/Y) during the first two
seconds after ignition switch is turned ON.
Does test lamp light?
YES
Inspect fuel
pump wiring.
Is wiring OK?
pump wiring.
After replacing ECM or TPS, the TPS zero set procedure
must be performed. Refer to THROTTLE POSITION
SENSOR in the appropriate BUELL SERVICE MANUAL.
Connect Breakout Box (B-48115) to
Electronic Control Module (ECM).
2
Check continuity between fuel pump
connector [86B] terminal "4" and ECM
3
connector [10] (Black) terminals "27"
NO YES
Repair fuel
Replace
ECM.
NOTE:
2008 Buell XB Diagnostics: Engine Management 2-49
NO
Locate and
repair open in
(O/GY) wire.
NO
and "28".
Is continuity present?
NO
Locate and
repair open on
(BN/Y) wire.
fc00377_en