Buell 2003XB9S Service Manual page 349

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Test 4.15 (Part 2 of 2)
YES
Reconnect cam position sensor connector [14]. Measure
voltage between Pin 3 and Pin 7 of Breakout Box (GY).
Voltage should alternate between 0 and 5 volts while
cranking.
Does it?
YES
Problem may be intermittent. Verify that
connectors [10], [11] and [14] are recon-
nected. Remove Breakout Box and try to
start vehicle. Will vehicle start?
YES
With engine running, wiggle cam
position sensor and wires to iden-
tify any loose connects (engine
misfires or stalls.) Any found?
YES
Repair.
7503
4-40 2003 Buell XB9S: Fuel System
Continued from Test 4.15 (Part 1 of
Disconnect cam position sensor connector [14]. With
5
ignition ON, measure voltage between Terminal A (+)
and Terminal C (-) of connector [14B]. Is 5 volts
present?
NO
Pinion gear key
failure, loose rotor
cup or other
mechanical failure.
7504
NO
Replace cam position sensor.
See 4.30 CAM POSITION
SENSOR AND ROTOR.
7542
2).
NO
With ignition OFF, measure resistance between
connector [14] Terminal A and Breakout Box (GY)
Pin 1. Also between connector [14] Terminal C
(BK/W wire) and ECM Pin 7 on connector [11B]. Is
resistance greater than 1.0 ohm?
YES
Repair open Check for continuity between Ter-
circuit. minal A connector [14B] and
ground. Continuity present?
7240
YES
Repair short
to ground.
7503
NO
Disconnect connector [14]. Measure resis-
tance between Terminal B and Connector
[14B] and Breakout Box (GY) Pin 3.
Is resistance greater than 1.0 ohms?
YES
Repair open
connection.
7245
YES
Replace cam position
sensor. See 4.30
CAM POSITION SEN-
SOR AND ROTOR.
7542
NO
NO
Replace ECM. See
4.29 ELECTRONIC
CONTROL MODULE.
7250
NO
Remove cam timer
cover using 1/8 in.
drill bit. Crank
starter. Does rotor
cup rotate?
NO
Mechanical failure.
Inspect for loose
rotor cup and
sheared pinion
gear key.
7504