2007 Buell Lightning: Fuel System 4-67
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TROUBLE CODES 23 AND 32 4.22
GENERAL
Front Fuel Injector (Code 23)
And Rear Fuel Injector (Code 32)
See Figure 4-47. The fuel injectors (2,5) are solenoids that
allow pressurized fuel into the engine intake tract. The injec-
tors are timed to the engine cycle and are triggered sequen-
tially.
NOTE
The injectors on the 984 and 1200 models are not inter-
changeable due to specific spray patterns designed for the
XB engine.
The power for the injectors comes from the ignition relay. The
ignition relay also provides power for fuel pump, ECM and the
ignition coils. The ECM provides the path to ground to trigger
the injectors.
NOTE
Ignition relay failures or wiring harness problems will cause
12 volt power to be lost to both injectors, ignition coils, ECM
and fuel pump.
DIAGNOSTICS
Diagnostic Notes
The reference numbers below correlate with the circled num-
bers on the Code 23/32 flow charts.
1WARNING1WARNING
To prevent spray of fuel, purge system of high-pressure
fuel before supply line is disconnected. Gasoline is
extremely flammable and highly explosive, which could
result in death or serious injury. (00275a)
1. Purge fuel line. See 4.39 FUEL PUMP.
2. Use HARNESS CONNECTOR TEST KIT (Part No. HD-
41404), purple pin probes and patch cord.
3. Connect BREAKOUT BOX (Part No. HD-42682) to ECM.
See 4.6 BREAKOUT BOX.
4. Use FUEL INJECTOR TEST LAMP (Part No. HD-34730-
2C).
Figure 4-47. Fuel Injectors
Figure 4-48. Fuel Injector Connector
2
5
1
1. Fuel rail fastener
2. Rear fuel injector
3. Fuel rail assembly
4. Clip (2)
5. Front fuel injector
10644
6
3
4
8822
1. Fuel injector connector
2. Tab
1
2
2
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