Buell 2008 XB SERIES Electrical Diagnostics Manual page 122

Front and Rear Fuel Injector: DTC P0261 (23); DTC P0262 (23); DTC P0264 (32); DTC P0265
(32) (Part 1 of 2)
Disconnect and attach Fuel Injector Test
Lamp. Crank engine.
Does the Fuel Injector Test Lamp flash?
Measure resistance of
the suspect Fuel Injector.
terminals 12.25 ohms?
YES
Check for loose or
corroded terminals
in harness. Repair
as necessary.
Clear DTCs and confirm proper operation with no
check engine lamp. Codes can be cleared using
DIGITAL TECHNICIAN (Part No. HD-44750).
After replacing ECM or TPS, TPS zero set procedure
must be performed. Refer to THROTTLE POSITION
SENSOR in the appropriate Buell Service Manual.
2-72 2008 Buell XB Diagnostics: Engine Management
Is connector connected at the Fuel Injector?
1
YES
YES
Is resistance across
NO
Replace Fuel Injector.
See THROTTLE
BODY in appropriate
Buell Service Manual.
NOTES:
Using Breakout Box, check with test lamp
4
between ECM [10] terminal "29" (DTC
P0261 (23), P0262 (23) or ECM [10]
terminal "30" (DTC P0264 (32), P0265 (32)
and ECM [10] terminal "9".
Does the Fuel Injector Test Lamp flash
when engine is cranked?
YES
Recheck connections.
Perform wiggle test. See 2.7
WIGGLE TEST.
Repair as necessary.
1
NO
Check voltage on connector [84] or
2
[85] terminal "1" (GY) wire on Fuel
Injector connector to ground. Should
be equivalent to Battery voltage after
Ignition Switch is ON.
Is it?
YES
2 Attach Breakout Box (B-48115) to ECM.
If DTC P0261 (23), P0262 (23), measure
3 resistance between ECM connector
[10](BK) terminal "29" (W/Y) wire and
terminal "2" of the front fuel injector
connector [84].
If DTC P0264 (32), P0265 (32), measure
resistance between ECM connector
[10](BK) terminal "30" (GN/GY) wire and
terminal "2" of the rear fuel injector
connector [85].
Is resistance less than 0.5 ohm?
YES
NO
Replace ECM.
NO
Reconnect and
install airbox.
NO
STOP
Go to Front and
Rear Fuel Injector
Test DTC P0261
(23); P0262 (23);
P0264 (32); P0265
(32) (Part 2 of 2)
NO
Repair open or
poor connection.
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