Buell 2006LIGHTNING MODELS, Service Manual, Page: 617 / 638

2006 Buell Lightning: Electrical 7-61
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Speedometer Test: Chart 2B
INOPERATIVE, INACCURATE OR ERRATIC SPEEDOMETER
Continued from Speedometer Test: Chart 2A .
Check for 4-6 VDC on R/W wire in vehicle speed sensor con-
nector [65B]. Voltage present?
YES
Check for continuity to ground
on BK wire in connector [65B].
Continuity present?
NO
Check for open/
grounded wires.
Wires OK?
YES
Replace
instrument module.
NO
Repair
wires.
YES
Check for voltage on W wire
in connector [65B]. While
connected, meter should read
4-6 VDC when gear tooth
absent and 0-1 VDC when gear
tooth present. Does it?
NO
Check for open
wires. Wires OK?
YES
Replace
instrument module.
NO
Repair
wires.
YES
Check instrument module power
(O/W wire) and ground terminal (BK
wire) voltage at back of instrument
module. Test voltage while shaking
harness. Does voltage fluctuate?
NO
4-6 VDC is
not present.
Replace
instrument module.
NO
4-6 VDC is present,
but no flunctuation
to 0-1 VDC.
Replace vehicle speed
sensor.
YES
Repair as necessary.
NO
Check speedometer speed
sensor. Clean or replace sen-
sor as required. Retest.
Problem solved?
YES
System OK.
6022 6013
6022 6013
6022
6010
6008
6029
6024
NO
Replace
instrument module.