Yamaha YZFR1W 2007, Service Manual

Page: 353 / 429

FUEL INJECTION SYSTEM
8-34
Communication error with the meter
43
Fuel system voltage
(monitor voltage)
The ECU is unable to monitor the
battery voltage
(an open circuit in the line to the
ECU).
Able Able
44
Error in writing the
amount of CO adjust-
ment on EEPROM Error is detected while reading or
writing on EEPROM (CO adjust-
ment value).
Able Able
46
Vehicle system power
supply
(Monitoring voltage)
Power supply to the fuel injection
system is not normal.
Able Able
50
ECU internal malfunc-
tion
ECU memory is faulty. (When this
malfunction is detected in the ECU,
the fault code number might not
appear on the meter.)
Able/Unable Able/Unable
59
Throttle position sen-
sor (for throttle cable
pulley)
(open or short circuit/
loose connection)
Throttle position sensor (for throttle
cable pulley):
open or short circuit detected.
Throttle position sensor (for throttle
cable pulley) coupler connection is
loose.
Able/Unable Able/Unable
60 Throttle servo motor
Throttle servo motor:
open or short circuit detected.
Motor is defective or ECU internal
malfunction.
Able/Unable Able/Unable
Fault
code No.
Item Symptom
Able /
unable to
start
Able /
unable to
drive
Er-1
ECU internal malfunc-
tion
(output signal error)
No signals are received from the
ECU.
Unable Unable
Er-2
ECU internal malfunc-
tion
(output signal error)
No signals are received from the
ECU within the specified duration.
Unable Unable
Er-3
ECU internal malfunc-
tion
(output signal error)
Data from the ECU cannot be
received correctly.
Unable Unable
Er-4
ECU internal malfunc-
tion
(input signal error)
Non-registered data has been
received from the meter.
Unable Unable
Fault
code No.
Item Symptom
Able /
unable to
start
Able /
unable to
drive