Buell 2007 LIGHTNING Service Manual

4-28 2007 Buell Lightning: Fuel System
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Test 4.11 (Part 3 of 3)
Continued from Test 4.11 (Part 2 of 3).
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?
With engine running, wiggle cam
position sensor and wires to iden-
tify any loose connects (engine
misfires or stalls.) Any found?
YES
Pinion gear key
failure, loose rotor
cup or other
mechanical failure.
NO
Replace cam
position sensor. See 4.31
CAM POSITION SENSOR
AND ROTOR.
NO
Repair.
YES
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?
Remove cam timer
cover using 1/8 in.
drill bit. Crank
starter. Does rotor
cup rotate?
NO
Repair open
connection.
YES
Mechanical failure.
Inspect for loose
rotor cup and
sheared pinion
gear key.
NOYES
Replace cam position
sensor. See 4.31
CAM POSITION SEN-
SOR AND ROTOR.

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