Speedometer/Speed Sensor System Inspection; Speed Sensor Inspection - Honda VTR1000F Service Manual

LIGHTS/METERS/SWITCHES
SPEEDOMETER/SPEED SENSOR
SYSTEM INSPECTION
19-8
Remove the three bolts and the instrument assem-
bly from the stay (page 19-6).
Check the continuity between the green/black wire
terminal and body ground.
There should be continuity.
If there is no continuity, check for open circuit in the
green/black wire.
Measure the voltage between the red/green
(+)
and green/black (-) wire terminals.
There should be battery voltage at all time.
If there is no voltage, check for open circuit in red/
green wire.
Turn the ignition switch ON and measure the vol-
tage between the black/brown
(+)
and green/black
(-) wire terminals.
There should be battery voltage.
If there is no voltage, check for open circuit in black
/brown wire.
Shift the transmission in neutral and turn the igni-
tion switch ON.
Measure the voltage between the pink/green
(+)
and green/black (-) wire terminals while slowly
turning the rear wheel by hand.
There should be 0 to 5 V pulse voltage.
If pulse voltage does not appear, check for open or
short circuit in pink/green wire.
If the pink/green wire is OK, check the speed sensor.
SPEED SENSOR INSPECTION
Remove the seat (page 2-2).
Turn the ignition switch ON and measure the vol-
tage between the black/brown
(+)
and green/black
(-) wire terminals at the speed sensor 3P (white)
connector.
There should be battery voltage.
If there is no voltage, check for open circuit in black
/brown and green/black wires.
Shift the transmission in neutral and turn the igni-
tion switch ON.
Measure the voltage between the pink/green
(+)
and green/black (-) wire terminals while slowly
turning the rear wheel by hand.
There should be 0 to 5 V pulse voltage.