Yamaha YZF-R15 Service Manual page 306

Fault code No. 44
Diagnostic code No.
Order Item/components and probable
cause
1 Malfunction in ECU.
Fault code No. 46
Diagnostic code No.
Order Item/components and probable
cause
1 Connections
• Main wire harness ECU coupler
2 Faulty battery.
3 Malfunction in rectifier/regulator
4 Open or short circuit in wire harness.
Fault code No. 50
Diagnostic code No.
Order Item/components and probable
cause
1 Malfunction in ECU.
Symptom Error is detected while reading from or writing on
EEPROM (CO adjustment value, code re-registering key
code, and throttle valve fully closed notification value).
60 EEPROM fault code display
Check or maintenance job
• Execute the diagnostic mode.
• 01 is displayed.
Symptom Power supply to the fuel injection system is not normal.
— —
Check or maintenance job
• Check the coupler for any pins
• Check the locking condition of
• If there is a malfunction, repair it
• Replace or change the battery
• Replace if defective.
Repair or replace if there is an
open or short circuit.
• Between battery and main
• Between main switch and ECU
Symptom Faulty ECU memory. (When this malfunction is detected in
the ECU, the fault code number might not appear on the
meter.)
— —
Check or maintenance job
Replace the ECU.
NOTE:
Do not perform this procedure
with the main switch turned to
"ON".
8-49
FUEL INJECTION SYSTEM
(Code No.60).
Adjust the exhaust gas volume
(refer to page no. 3-5)
Replace ECU if defective.
that may be pulled out.
the coupler.
and connect the coupler se-
curely.
Refer to "CHECKING AND
CHARGING THE BA TTERY " on
page 8-61.
Refer to "CHARGING SYS-
TEM" on page 8-11.
switch
(red–red)
(brown–brown)
Reinstatement
method
Turning the
main switch to
"ON".
Reinstatement
method
Starting the en-
gine and oper-
ating it at idle.
Reinstatement
method
Turning the
main switch to
"ON".