Yamaha YZF-R1S Service Manual - page 350
7-6
FUEL INJECTION SYSTEM
FI
Fault
Code No.
Item
Symptom
Fail-safe action
Able / unable
to start
Able / unable
to drive
46
Vehicle system power
supply (Monitor voltage)
Power supply to the FI system is not
normal.
--
Able
Able
47
Sub-throttle servo motor
potention (open or short
circuit)
sub-throttle servo motor potention-
open or short circuit detected.
S Turn the sub-throttle servo motor
toward the close side for 4 seconds
and then stop it.
Able
Able
48
Sub-throttle servo motor
(lock)
A lock of the sub-throttle servo motor is
detected.
S Perform the preventative control
against motor locking.
(Perform the lock release operation
twice every 100 seconds.)
Able
Able
50
ECU internal
malfunction (memory
check error)
Faulty ECU memory. When this
malfunction is detected, the code
number might not appear on the meter.
--
Unable
Unable
—
Start unable warning
Relay is not turned ON even if the crank
signal is input while the start switch is
turned ON.
When the start switch is turned ON
while an error is detected with the fault
code of No.11, 12, 19, 30, 41 or 50.
Engine trouble warning light flashes
when the start switch is turned ON.
Unable
Unable
Communication error with the meter
Fault
Code No.
Item
Symptom
Fail-safe action
Able / unable
to start
Able / unable
to drive
Er-1
ECU internal malfunction
(output signal error)
No signals are received from the ECU.
–
Unable
Unable
Er-2
ECU internal malfunction
(output signal error)
No signals are received from the ECU
within the specified duration.
–
Unable
Unable
Er-3
ECU internal malfunction
(output signal error)
Data from the ECU cannot be received
correctly.
–
Unable
Unable
Er-4
ECU internal malfunction
(input signal error)
Non-registered data has been received
from the meter.
–
Unable
Unable