Yamaha MTN850-A 2017, Service Manual, Page: 547 / 560

SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE
9-14
05 Air temperature Displays the air temperature. Compare the actually mea-
sured air temperature with
the tool display value.
06 Coolant temperature When engine is cold: Dis-
plays temperature closer to
air temperature.
When engine is hot: Displays
current coolant temperature.
Compare the actually mea-
sured coolant temperature
with the tool display value.
07 Rear wheel vehicle speed
pulses
Rear wheel speed pulse
0–999
Check that the number
increases when the rear
wheel is rotated. The number
is cumulative and does not
reset each time the wheel is
stopped.
08 Lean angle sensor Lean angle sensor output
voltage
Remove the lean angle sen-
sor and incline it more than
65 degrees.
•
Upright 0.4–1.4
•
Overturned 3.7–4.4
09 Fuel system voltage
(battery voltage)
Fuel system voltage
Approximately 12.0
Set the start/engine stop
switch to “ ”, and then com-
pare the actually measured
battery voltage with the tool
display value. (If the actually
measured battery voltage is
low, recharge the battery.)
13 Throttle position sensor sig-
nal 2
• Fully closed position 9–23 Check with throttle valves
fully closed.
• Fully open position 94–108 Check with throttle valves
fully open.
14 Accelerator position sensor
signal 1
• Fully closed position 12–22 Check with throttle grip fully
closed position.
• Fully open position 97–107 Check with throttle grip fully
open position.
15 Accelerator position sensor
signal 2
• Fully closed position 10–24 Check with throttle grip fully
closed position.
• Fully open position 95–109 Check with throttle grip fully
open position.
16 Front wheel vehicle speed
pulses
Front wheel speed pulse
0–999
Check that the number
increases when the front
wheel is rotated. The number
is cumulative and does not
reset each time the wheel is
stopped.
Diagnostic
code No.
Item Tool display Procedure