Yamaha MT-01 Service Manual page 776

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
44 amount of CO adjust-
ment on EEPROM
Vehicle system power
46 supply
(Monitoring voltage)
ECU internal malfunc-
50 tion
(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 malfunc-
Er-1 tion
(output signal error)
ECU internal malfunc-
Er-2 tion
(output signal error)
ECU internal malfunc-
Er-3 tion
(output signal error)
ECU internal malfunc-
Er-4 tion
(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 adjust-
ment 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 de-
tected.
Engine trouble warning light is
flashing. (Abnormally high temper-
ature is detected by muffler cool-
ing 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 re-
ceived correctly.
Non-registered data has been re-
ceived 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