Buell 2007 FIREBOLT Service Manual page 613

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Speedometer Test: Chart 2B
INOPERATIVE, INACCURATE OR ERRATIC SPEEDOMETER
Continued from
Check for 4-5 VDC on R/W wire in vehicle speed sensor con-
(O/W wire) and ground terminal (BK
wire) voltage at back of instrument
module. Test voltage while shaking
7-58 2007 Buell Firebolt: Electrical
Speedometer Test: Chart 2A.
nector [65B]. Voltage present?
YES
Check for continuity to ground
on BK wire in connector [65B].
Continuity present?
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?
YES
Check instrument module power
harness. Does voltage fluctuate?
YES
Repair as necessary.
6008
NO
Check for open
wires. Wires OK? instrument module.
YES
Replace
instrument module.
6022
NO
4-6 VDC is
not present.
Replace
instrument module
6022
NO
Check speedometer speed
sensor. Clean or replace sen-
sor as required. Retest.
Problem solved?
YES
System OK.
instrument module.
6029
NO
Check for open/
grounded wires.
Wires OK?
YES NO
Replace Repair
wires.
6022
NO
Repair
wires.
6013
NO
4-6 VDC is present,
but no flunctuation
to 0-1 VDC.
Replace vehicle speed
sensor.
NO
Replace
6024
6013
6010