Yamaha MT-01 Service Manual page 809

Manuals by Motomatrix / www.motomatrix.co.uk
Fault code No. 63
Diagnostic code No.
Order Item/components and probable
cause
1 Muffler cover fan fuse or ECU fuse is
blown.
2 Defective muffler cooling fan tempera-
ture sensor or motor relay
3 • Positions of muffler cooling fan tem-
perature sensor and its surrounding
parts changed due to deformed
parts near sensor
• Muffler cooling fan temperature sen-
sor detected a temperature of 120
°C (248 °F) or higher.
Fault code No. Er-1 Symptom No signals are received from the ECU.
Diagnostic code No.
Order Item/components and probable
cause
1 Connections
• Main wire harness ECU coupler
• Main wire harness meter assembly
coupler
2 Open or short circuit in wire harness.
3 Malfunction in meter assembly.
4 Malfunction in ECU.
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Symptom Engine trouble warning light is flashing. (Abnormally high
temperature is detected by muffler cooling fan tempera-
ture sensor.)
12 Muffler cooling fan temperature sensor
51 Muffler cooling fan motor relay
63 Stopping the flashing of the engine trouble warning light
(erasing the muffler cooling fan temperature sensor fault
code)
— —
FUEL INJECTION SYSTEM
Check or maintenance job
• Check the muffler cover fan
fuse and ECU fuse.
Refer to "CHECKING THE
FUSES" on page 7-93.
• Execute the diagnostic mode.
(Code No.12 and 51)
• Replace if defective.
Refer to "CHECKING THE
MUFFLER COOLING FAN
TEMPERATURE SENSOR" on
page 7-108 and "CHECKING
THE RELAYS" on page 7-96.
• Check that the parts near the
muffler cooling fan temperature
sensor are not deformed and
that the sensor and its sur-
rounding parts are in their cor-
rect positions. Repair or replace
if necessary.
Check or maintenance job
• Check the coupler for any pins
that may be pulled out.
• Check the locking condition of
the coupler.
• If there is a malfunction, repair it
and connect the coupler se-
curely.
• Repair or replace if there is an
open or short circuit.
• Between meter assembly cou-
pler and ECU coupler
(yellow/blue–yellow/blue)
Replace the meter assembly.
Replace the ECU.
7-63
Reinstatement
method
Turning the
main switch to
"ON".
Execute the di-
agnostic mode.
(Code No.63)
Reinstatement
method
Turning the
main switch to
"ON".