Buell 2008 XB SERIES Electrical Diagnostics Manual page 103

Misfire at Idle or Under Load (Part 2 of 2)
Below 700
Ohms.
Disconnect Crankshaft Position
Sensor. Check for continuity
between Breakout Box terminals
"18" (Gray) and "26" (Gray).
Is resistance greater than 1.0 ohm ?
YES
Replace
Crankshaft
Position
Sensor.
Continued from Misfire Test (Part 1 of 2).
Disconnect Electronic Control Module (ECM) from
Breakout Box. Using a DVOM, check resistance between
Breakout Box terminals "18" (Gray) and "26" (Gray).
Above 1500
Ohms.
Disconnect Crankshaft
Position Sensor.
Check for continuity
between connector [79B]
terminal "1" and Ground.
Check for continuity
between connector [79B]
terminal "2" and Ground.
NO Is resistance greater than
1.0 ohm ?
Repair
short
between
circuits.
YES
Connect DVOM to
crankshaft position
sensor terminals "1" and
"2". Measure AC voltage
output of the sensor
while cranking engine.
Is voltage greater than
1.0V?
YES NO
Replace
Replace
Crankshaft
ECM.
Position
Sensor.
Above 1500
Disconnect Crankshaft Position Sensor.
Check for continuity between Breakout
Box terminal "18" (Gray) to crankshaft
position sensor connector [79B] terminal
Check for continuity between Breakout
Box terminal "26" (Gray) to crankshaft
position sensor connector [79B] terminal
Is resistance greater than 1.0 ohm ?
YES
NO
Locate
and repair
open
Locate
circuit.
and repair
short to
Ground.
NOTE:
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 2-53
Ohms.
"1".
"2".
NO
Replace
Crankshaft
Position
Sensor.
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