Buell 2008 XB SERIES Electrical Diagnostics Manual page 85

Engine Cranks But Will Not Start (Part 3 of 3)
Disconnect Crankshaft Position
Sensor. Check for continuity
between Breakout Box terminals
"18" (Gray) and "26" (Gray) of
Breakout Box.
Is resistance greater than 1.0 ohm ?
YES
Replace
Crankshaft
Position
Sensor.
Continued from Engine Cranks but Will Not Start Test
Disconnect Electronic Control Module (ECM) from
Breakout Box. Using a DVOM, check resistance between
Breakout Box terminals "18" (Gray) and "26" (Gray).
Below 700
Ohms.
Disconnect Crankshaft
between connector [79B]
terminal "1" and ground.
between connector [79B]
terminal "2" and ground.
NO
Is resistance greater than
Repair
short
between
YES
circuits.
Connect DVOM to
crankshaft position sensor
terminals "1" and "2".
Measure AC voltage output
of the sensor while cranking
engine.
Is voltage at least 1.0 VAC ?
YES
Replace
Crankshaft
Position
Sensor.
(Part 2 of 3).
Above 1500
Ohms.
Position Sensor.
Check for continuity
Check for continuity
1.0 ohm ?
NO
Locate
and repair
short to
Ground.
NO
Replace
ECM.
After replacing ECM or TPS, the TPS zero
set procedure must be performed. Refer to
THROTTLE POSITION SENSOR in the
appropriate BUELL SERVICE MANUAL.
2008 Buell XB Diagnostics: Engine Management 2-35
Above 1500
Ohms.
Disconnect Crankshaft Position
Sensor.
Check for continuity between
Breakout Box terminal "18" (Gray)
to crankshaft position sensor
connector [79B] terminal "1".
Check for continuity between
Breakout Box terminal "26" (Gray)
to crankshaft position sensor
connector [79B] terminal "2".
Is resistance greater than 1.0 ohm ?
YES NO
Replace Locate
Crankshaft and repair
Position open
Sensor. circuit.
NOTE:
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