Buell 2007 FIREBOLT Service Manual page 414

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Code 24/25 Test
2
Front coil codes: Install test light and adapter between
3
Pin 6,(BK) and ECM Pin 1R of Breakout Box (Black).
Rear coil codes: Install test light and adapter between
Pin 7, (BK) and ECM Pin 1R of Breakout Box (Black).
1
Use Breakout Box and test light with adapter
for the next inspection.
Does test lamp flash when engine is cranked?
YES
Faulty coil
connection or coil. See
4.32 IGNITION COIL.
YES
Measure resistance at Breakout Box between
ECM and coil terminals as follows:
Trouble Coil Breakout
Code Terminal Box
Terminal
24 A
(Front) (BE/O)
25 C
(Rear) (Y/BE)
Resistance should be less than 0.5 ohms. Is it?
YES
Perform 4.7 WIGGLE
TEST. Intermittents
found?
YES
Repair as
necessary.
Clear codes and confirm proper operation with no
check engine lamp. Codes can be cleared using
DIGITAL TECHNICIAN (Part No. HD-44750).
1 Measure voltage on Terminal B of coil.
Terminal 4 (Pin 4 in Relay Center) after key
7
YES
6
Repair open wire or
connection on
GY wire.
NO
Repair open wire
or connection.
NO
Replace ECM. See
4.30 ELECTRONIC
CONTROL MODULE.
2007 Buell Firebolt: Fuel System
NO
Should be equivalent to battery
voltage after key is turned ON.
Is it?
NO
Measure voltage at ignition relay
is turned ON.
Should be equivalent to
battery voltage. Is it?
NO
Check for multiple codes.
See 4.4 CHECKING FOR
TROUBLE CODES.
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