Yamaha MT-01 Service Manual page 345

Manuals by Motomatrix / www.motomatrix.co.uk
Fault
code No.
Speed sensor
42
Neutral switch
Fuel system voltage
43
(monitoring voltage)
Error in writing the
amount of CO
44
adjustment on
EEPROM
Vehicle system power
46 supply
(Monitoring voltage)
ECU internal
50 malfunction
(memory check error)
Muffler cooling fan
62 temperature sensor
(open or short circuit)
Muffler cooling fan
temperature sensor
63
(ambient temperature
abnormally high)
Communication error with the meter
Fault
code No.
ECU internal
Er-1 malfunction
(output signal error)
ECU internal
Er-2 malfunction
(output signal error)
ECU internal
Er-3 malfunction
(output signal error)
ECU internal
Er-4 malfunction
(input signal error)
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Item
No normal signals are received
from the speed sensor.
Open or short circuit is detected in
the neutral switch.
The ECU is unable to monitor the
battery voltage
(an open or short circuit in the line
to the ECU).
Error is detected while reading or
writing on EEPROM (CO
adjustment value).
Power supply to the fuel injection
system is not normal.
Faulty ECU memory. (When this
malfunction is detected in the
ECU, the fault code number might
not appear on the meter.)
Muffler cooling fan temperature
sensor: open or short circuit
detected.
Engine trouble warning light is
flashing. (Abnormally high
temperature is detected by muffler
cooling fan temperature sensor.)
Item
No signals are received from the
ECU.
No signals are received from the
ECU within the specified duration.
Data from the ECU cannot be
received correctly.
Non-registered data has been
received from the meter.
FUEL INJECTION SYSTEM
Symptom
Symptom
7-30
Able / un-
Able / un-
able to
able to start
drive
Able Able
Able Able
Able Able
Able Able
Unable Unable
Able Able
Able Able
Able / un-
Able / un-
able to
able to start
drive
Unable Unable
Unable Unable
Unable Unable
Unable Unable