4-72 2002 Buell S3T: Fuel System
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TROUBLE CODE 33 4.24
GENERAL
Fuel Pump
The fuel pump assembly is shown in Figure 4-56. ECM Pin 3
provides ground to the fuel pump. Code 33 will set if:
● BN/Y wire is shorted to 12 volts. This will also cause the
ignition fuse to blow. See Figure 4-57.
● 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 4.7 BREAKOUT BOX.
2. Use HARNESS CONNECTOR TEST KIT (Part No. HD-
41404), red pin probe and patch cord.
3. Use HARNESS CONNECTOR TEST KIT, gray socket
probe and patch cord.
Scanalyzer Notes
The Scanalyzer icon appears at those points in the flow chart
where the Scanalyzer can be used.
Figure 4-56. Fuel Pump Assembly
Figure 4-57. Ignition Fuse
5
6767
1 2 3
4
1. Pressure Regulator
2. Low Fuel Level Sensor
3. Filter
4. Wiring Harness
5. Fuel Fitting Nut (Schraeder Valve not shown)
1. Ignition Fuse
2. Spare Fuse Slot (may be 15 or 20 amp)
1
2
6772
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