4-100 2003 Buell XB9S: Fuel System
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BANK ANGLE SENSOR 4.34
GENERAL
The Bank Angle Sensor (BAS), located under the seat, pro-
vides input to the ECM on vehicle lean angle. If vehicle lean
angle exceeds predetermined bank angle limit, the Bank
Angle Sensor will shut off power to the ignition and fuel pump.
REMOVAL
1. Remove seat. See 2.41 SEAT.
1WARNING1WARNING
To protect against shock and accidental start-up of vehi-
cle, disconnect the negative battery cable before pro-
ceeding. Inadequate safety precautions could result in
death or serious injury.
2. Disconnect negative battery cable.
3. See Figure 4-78. Remove screws and washers to detach
sensor from seat latch bracket.
4. Unplug bank angle sensor connector [134] and remove.
INSTALLATION
1. See Figure 4-78. Install bank angle sensor connector
[134].
2. Position bank angle sensor on seat latch bracket. Make
sure locating post on sensor engages hole in mounting
tab.
3. Install bank angle sensor to mounting tab with fasteners
and new locknuts. Tighten fastener to 12-36 in-lbs (1.4-
4.1 Nm).
1WARNING1WARNING
Always connect the positive battery cable first. If the pos-
itive cable should contact ground with the negative cable
installed, the resulting sparks may cause a battery explo-
sion which could result in death or serious injury.
4. Connect negative battery cable.
1WARNING1WARNING
After installing seat, pull upward on front of seat to be
sure it is locked in position. If seat is loose, it could shift
during vehicle operation and startle the rider, causing
loss of control which could result in death or serious
injury.
5. Install seat. See 2.41 SEAT.
Figure 4-78. Bank Angle Sensor Location
8895
1. Bank angle sensor
2. Fuse block and electrical relays
3. Seat latch bracket
4. BAS fasteners
8896
8897
2
1
4
3
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