Yamaha MT-01 T 2005 Service Manual page 351

Fault
code Symptom
No.
Non-registered data has
Er-4 been received from the
meter.
Sensor operation table
Diag-
nostic
code
No.
01 Throttle angle
• Fully closed position
• Fully opened position
03 Pressure difference
(atmospheric pressure and
cylinder-#1 intake air
pressure)
04 Pressure difference
(atmospheric pressure and
cylinder-#2 intake air
pressure)
05 Air temperature
07 Vehicle speed pulse
08 Lean angle cut-off switch
• Upright
• Overturned
09 Fuel system voltage
(battery voltage)
• Improper connection in wire harness.
• Malfunction in meter.
• Malfunction in ECU.
Item
15–20
95–100
Displays the cylinder-#1
intake air pressure.
Displays the cylinder-#2
intake air pressure.
Displays the air temperature. Compare the actually
0–999
0.4–1.4
3.7–4.4
Approximately 12.0
FUEL INJECTION SYSTEM
Probable cause of malfunction
Meter display
7-36
Diagnostic
code No.
—
Checking method
Check with throttle fully
closed.
Check with throttle fully
open.
Set the engine stop switch
to " ", then operate the
throttle while pushing the
start switch " ". (If the
display value changes, the
performance is OK.)
Set the engine stop switch
to " ", then operate the
throttle while pushing the
start switch " ". (If the
display value changes, the
performance is OK.)
measured air temperature
with the meter display
value.
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.
Remove the lean angle cut-
off switch and incline it
more than 65 degrees.
Set the engine stop switch
to " ", and then compare
with the actually measured
battery voltage. (If the
battery voltage is lower,
perform recharging.)