Buell 2008 XB SERIES Electrical Diagnostics Manual page 195

Ignition Coil: DTC P2300 (24); DTC P2301 (24); DTC P2303 (25); DTC P2304 (25)
Insert test lamp between Electronic Control Module
2
(ECM) terminal "9" (Black) and ECM terminal "25" of
3
Insert test adapter between ECM terminal "9" (Black)
wire and ECM terminal "34" (Black) of Breakout Box.
IGNITION COIL in the appropriate
Measure resistance at Breakout Box between
ECM and coil terminals as follows:
Trouble
Code
24
1
(Front)
25
(Rear)
Is resistance should be less than 0.5 ohms?
Use Breakout Box and test adapter
Front Ignition Coil.
Breakout Box.
Does test lamp flash when engine is cranked?
YES
Faulty ignition coil
connection or Ignition Coil. See
Buell Service Manual.
YES
COIL Breakout
TERMINAL Box
Terminal
3 25 (BK)
(Y/BE) 34 (BK)
1
31 (BK)
(BE/O)
32 (BK)
YES
Perform wiggle test.
See 2.7
4
WIGGLE TEST.
Intermittents found?
YES
Repair as
necessary.
NOTE:
for the Next Inspection(s).
Rear Ignition Coil.
Insert test lamp between Electronic Control Module
(ECM) terminal "9" (Black) and ECM terminal "31" of
Breakout Box.
Insert test adapter between ECM terminal "9" (Black)
wire and ECM terminal "32" (Black) of Breakout Box.
Does test lamp flash when engine is cranked?
Measure voltage on terminal "2" of the
ignition coil [83]. Reading should be
1
equivalent to battery voltage after the Ignition
Measure voltage at ignition relay
terminal "87" after Ignition Switch is turned
ON. Reading should be equivalent to
YES
Repair open wire or
connection on
(GY) wire.
NO
Clear DTCs and confirm proper operation with no
check engine lamp. Codes can be cleared using
DIGITAL TECHNICIAN (Part No. HD-44750).
Repair open wire
or connection.
After replacing ECM or TPS, TPS zero set
procedure must be performed. Refer to
THROTTLE POSITION SENSOR in the
appropriate Buell Service Manual.
NO
Replace
ECM.
2008 Buell XB Diagnostics: Engine Management 2-145
2
3
NO
Switch is turned ON.
Is it?
NO
battery voltage.
Is it?
NO
Check for multiple codes.
See 2.4 CHECKING FOR
TROUBLE CODES.
NOTES:
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