Buell 2007 LIGHTNING Service Manual

4-74 2007 Buell Lightning: Fuel System
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TROUBLE CODE 33 4.24
GENERAL
Fuel Pump
The fuel pump assembly is shown in Figure 4-53. ECM Pin 3
provides ground to the fuel pump. Code 33 will set if:
● See Figure 4-54. BN/Y wire is shorted to 12 volts. This
will also cause the ignition fuse to blow.
● BN/Y wire is shorted to ground. This will cause the fuel
pump to run continuously even when the motor is not
running.
● Fuel pump motor stalls or spins without providing fuel
pressure.
DIAGNOSTICS
Diagnostic Notes
The reference numbers below correlate with the circled num-
bers on the Code 33 flow chart.
1. Connect BREAKOUT BOX (Part No. HD-42682) to ECM.
See 4.6 BREAKOUT BOX.
2. Use HARNESS CONNECTOR TEST KIT (Part No. HD-
41404), red pin probe and patch cord.
3. Use HARNESS CONNECTOR TEST KIT (Part No. HD-
41404), gray socket probe and patch cord.
Figure 4-53. Fuel Pump Assembly
10932b
2
1. Fuel screen
2. Wiring harness
3. Pressure regulator
4. Low fuel level sensor
1
4
3

Buell 2007 LIGHTNING Specifications

General

Year	2007
Manufacturer	Buell
Model	Lightning
Category	Motorcycle
Displacement	1203 cc
Bore x Stroke	88.9 mm x 96.8 mm
Compression Ratio	10.0:1
Fuel System	Electronic fuel injection
Transmission	5-speed
Final Drive	Belt
Rear Suspension	Showa shock absorber
Rear Brakes	Single disc, 1-piston caliper
Engine Type	V-Twin
Ignition	Digital
Front Suspension	Showa inverted fork
Front Brakes	Single disc, 6-piston caliper
Front Tire	120/70 ZR17
Rear Tire	180/55 ZR17
Wheelbase	52.0 inches
Seat Height	30.1 inches
Dry Weight	395 lbs
Fuel Capacity	14.5 liters