Buell 2008 XB SERIES Electrical Diagnostics Manual page 173

Neutral Switch: DTC P1155 (27)
3
Locate and repair short-to-
ground on (TN/Y) wire in
main wiring harness.
WIth the Ignition Switch OFF and the transmission in 1st
or 2nd gear, connect Breakout Box (Part No. B-48115) to
1
the main harness, leaving the Electronic Control Module
(ECM) disconnected. Measure resistance between
3
Breakout Box terminal "8" (Gray) and ground.
Is resistance less than 10 ohms?
YES
Disconnect Neutral Switch [131].
Measure resistance between Breakout
Box terminal "8" (Gray) and ground.
Is resistance less than 10 ohms?
YES NO
Replace
Neutral
Switch.
NO
Replace
2
ECM.
NOTES:
After replacing Electronic Control Module (ECM) or
TPS, TPS zero set procedure must be performed.
Refer to THROTTLE POSITION SENSOR in the
appropriate BUELL SERVICE MANUAL.
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2008 Buell XB Diagnostics: Engine Management 2-123