Yamaha R1 Series 2015, Service Manual, Page: 561 / 704

FUEL INJECTION SYSTEM
8-80
Fault code No. 41
6 Wire harness continuity. Open or short circuit
o
Replace
the wire harness.
Between secondary injector
coupler and ECU coupler.
Secondary injector #1
white/blue–white/blue
red/blue–red/blue
Secondary injector #2
sky blue/white–sky blue/white
red/blue–red/blue
Secondary injector #3
brown/yellow–brown/yellow
red/blue–red/blue
Secondary injector #4
brown/black–brown/black
red/blue–red/blue
Execute the diagnostic mode.
(Code No. 40, 41, 42, 43)
No operating sound
o
Go to
item 7.
Operating sound
o
Go to item
8.
7 Malfunction in ECU. Replace the ECU.
Refer to “REPLACING THE
ECU (Engine Control Unit)” on
page 8-180.
8 Delete the fault code. Start the engine and let it idle for
approximately 5 seconds.
Check that the fault code num-
ber is not displayed.
Fault code No. 41
Item
IMU (Inertial Measurement Unit): no normal signals are received
from the IMU (Inertial Measurement Unit).
Fail-safe system Unable to start engine
Unable to drive vehicle
Diagnostic code No. 17
Meter display Displays the bank angle in increments of 5
q
• 0–5
q
(vehicle is vertical)
• Less than 30
q
(when the sidestand is used)
Procedure Check that 0–5
q
is displayed when the vehicle is vertical and that the dis-
played value increases as the vehicle continues to incline.
Item Probable cause of
malfunction and check
Maintenance job Confirmation of service com-
pletion
1 Connection of IMU coupler.
Check the locking condition of
the coupler.
Disconnect the coupler and
check the pins (bent or broken
terminals and locking condition
of the pins).
Improperly connected
o
Con-
nect the coupler securely or
replace the wire harness.
Turn the main switch to “ON”.
Fault code number is not dis-
played
o
Service is finished.
Fault code number is displayed
o
Go to item 2.
Fault code No. 40
Item Secondary injector: open or short circuit detected.