Yamaha Grizzly550 User Manual page 376

Fault
code Symptom
No.
Faulty ECU memory.
(When this malfunction is
detected in the ECU, the
50
fault code number might
not appear on the multi-
function meter.)
Sensor operation table
Diag-
nostic
Item
code
No.
d01 Throttle angle
• Fully closed position
• Fully opened position
d03 Pressure difference
(atmospheric pressure and
intake air pressure)
d05 Intake air temperature
d06 Coolant temperature
d07 Vehicle speed pulse
d08 Lean angle sensor
• Upright
• Overturned
d09 Fuel system voltage
(battery voltage)
FUEL INJECTION SYSTEM
Probable cause of malfunction
• Malfunction in ECU. (The program and data
are not properly written on or read from the
internal memory.)
Meter display
12–22
91–111
Displays the intake air pres-
sure.
Displays the intake air tem-
perature.
Displays the coolant temper-
ature.
0–999
3.7–4.4
0.4–1.4
Approximately 12.0
9-39
Diagnostic
code No.
—
Checking method
Check with throttle fully
closed.
Check with throttle fully
open.
Set the engine stop switch
to "RUN", then operate the
throttle while pushing the
start switch. (If the display
value changes, the perfor-
mance is OK.)
Compare the actually mea-
sured intake air tempera-
ture with the meter display
value.
Compare the actually mea-
sured coolant temperature
with the meter display val-
ue.
Check that the number in-
creases when the rear
wheels are rotated.
The number is cumulative
and does not reset each
time the wheel is stopped.
Remove the lean angle
sensor and incline it more
than 65 degrees.
Set the engine stop switch
to "RUN", and then com-
pare with the actually mea-
sured battery voltage. (If
the battery voltage is lower,
perform recharging.)