General - Buell 2008 XB SERIES Electrical Diagnostics Manual

DTC P0628 (33), P0629 (33)

GENERAL

Fuel Pump
The fuel pump assembly is shown in
minals "27" and "28" provide ground to the fuel pump. These
codes will set if:
(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.
Table 2-52. Code Description
DTC CHECK
ENGINE
LAMP CODE
P0628 33
P0629 33
Figure 2-81. ECM ter-
DESCRIPTION
Fuel pump circuit low
Fuel pump circuit high
ed01476
4
3 2
1. Fuel screen
2. Wiring harness
3. Pressure regulator
4. Low fuel level sensor
Figure 2-81. Fuel Pump Assembly
DIAGNOSTICS
PART NUMBER
B-48115 BREAKOUT BOX
HD-41404-B HARNESS CONNECTOR TEST KIT
Diagnostic Notes
Each reference number below correlates to a circled number
on the flow chart(s).
1. Connect BREAKOUT BOX (Part No. B-48115) to ECM.
See 2.6 BREAKOUT BOX.
2. Use HARNESS CONNECTOR TEST KIT (Part No. HD-
41404-B), purple pin probe and patch cord.
3. If resistance greater than 1 ohm is found between ECM
connector [10] terminal "27" OR "28" and fuel pump con-
nector [86A] terminal "4", but not both, the open must be
repaired but this repair will not correct the concern.
2008 Buell XB Diagnostics: Engine Management 2-99
2.28
1
TOOL NAME