Buell 2008 XB SERIES Electrical Diagnostics Manual page 83

Engine Cranks But Will Not Start (Part 1 of 3)
Install Fuel Pressure Gauge. See
2.15 FUEL PRESSURE TEST.
While cranking engine (for more
than two seconds to ensure proper
system operation), verify that
pressure rises to 49-51 PSI (338-
YES
STOP
Go to Engine
Cranks but Will
Not Start Test
(Part 2 of 3).
Is fresh gasoline in tank?
Check for trouble codes. See
CHECKING FOR TROUBLE CODES.
YES
Refer to applicable
trouble code chart.
Start with highest
priority code.
Check battery connections.
2 Check battery voltage. Is
voltage above 12.7 volts?
Does battery pass
Place transmission in neutral. Turn
Ignition Switch ON and set Engine
Stop Switch to RUN.
Did fuel pump run 2-3 seconds
and did the check engine lamp
YES
352 kPa).
Adequate pressure?
NO
Incorrect pressure.
See 2.15 FUEL
PRESSURE TEST.
YES
Fill tank with fresh
Codes found?
NO
Connect Breakout Box. Measure voltage
between connector [11] (Gray) terminal "17"
(+) and terminal "19" (-). Voltage should be
1
0.25-2.7 volt (Run Mode).
Is it?
YES
See 2.31 DTC P1151
YES
load test?
YES
illuminate?
No Fuel Pump response, but
NO check engine lamp is OK. See
2.15 FUEL PRESSURE TEST.
Short Fuel Pump response,
check engine lamp OK. See
NO
2.31 DTC P1151 (44), P1152
No Fuel Pump response or
NO check engine lamp. See 2.13
NO ECM POWER.
Fuel Pump OK, but no check
engine lamp. See 2.10 CHECK
NO
ENGINE LAMP NOT
ILLUMINATED AT KEY ON.
2008 Buell XB Diagnostics: Engine Management 2-33
NO
gasoline.
NO
(44), P1152 (44).
NO
Recharge
2
Battery.
NO
Replace
2
Battery.
(44).
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