Buell XB9R 2003 Service Manual page 365

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Code 24/25 Test
1
2
4-68 2003 Buell XB9R: Fuel System
Disconnect coil connector [83]. Attach Test
Lamp to [83] as shown in Figure 4-161.
Crank engine.
Do test lamp lights flash when cranked?
YES
Faulty coil
connection or coil. See
4.31 IGNITION COIL.
7856
YES
Attach Breakout Box (HD-42682) to ECM. Mea-
sure resistance between ECM and coil terminals
as follows:
Trouble Coil
Code Terminal 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.
7865
Clear codes and confirm proper operation with no
check engine lamp. Codes can be cleared using
DIGITAL TECHNICIAN (Part No. HD-44750).
1
ECM
7
6
Repair open wire or
connection on
GY wire.
NO
Repair open wire
or connection.
NO
Replace ECM. See
4.29 ELECTRONIC
CONTROL MODULE.
NO
Measure voltage on Terminal B of coil.
Should be equivalent to battery
voltage after key is turned ON.
Is it?
NO
Measure voltage at ignition relay
Terminal 87 after key is turned ON.
Should be equivalent to
battery voltage. Is it?
YES NO
Check for multiple codes.
See 4.4 CHECKING FOR
TROUBLE CODES.
7875
7860
7870