2007 Buell Lightning: Fuel System 4-41
HOME
Test 4.15 (Part 2 of 2)
Continued from Test 4.15 (Part 1 of 2).
Disconnect cam position sensor connector [14]. With
ignition ON, measure voltage between Terminal A (+)
and Terminal C (-) of connector [14B]. Is 5 volts
present?
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?
NO
YES
YES
Repair open
circuit.
Check for continuity between Ter-
minal A connector [14B] and
ground. Continuity present?
YES
Repair short
to ground.
NO
5
Replace ECM. See
4.30 ELECTRONIC
CONTROL MODULE.
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
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.
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?
NO
To Next Page
Loading...
Need help?
General
