Imu (Inertial Measurement Unit): No Normal Signals Are Received - Yamaha R1 Series 2015 Service Manual

Fault code No.
Item
6 Wire harness continuity.
7 Malfunction in ECU.
8 Delete the fault code.
Fault code No. 41
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Meter display
Procedure
Item Probable cause of
malfunction and check
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).
40
Secondary injector: open or short circuit detected.
Open or short circuit
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
Replace the ECU.
Refer to "REPLACING THE
ECU (Engine Control Unit)" on
page 8-180.
41

IMU (Inertial Measurement Unit): no normal signals are received

from the IMU (Inertial Measurement Unit).
Unable to start engine
Unable to drive vehicle
17
Displays the bank angle in increments of 5
• 0–5 (vehicle is vertical)
• Less than 30 (when the sidestand is used)
Check that 0–5 is displayed when the vehicle is vertical and that the dis-
played value increases as the vehicle continues to incline.
Maintenance job
Improperly connected
nect the coupler securely or
replace the wire harness.
8-80
FUEL INJECTION SYSTEM
Replace Execute the diagnostic mode.
(Code No. 40, 41, 42, 43)
No operating sound
item 7.
Operating sound
8.
Start the engine and let it idle for
approximately 5 seconds.
Check that the fault code num-
ber is not displayed.
Confirmation of service com-
Con- Turn the main switch to "ON".
Fault code number is not dis-
played Service is finished.
Fault code number is displayed
Go to item 2.
Go to
Go to item
pletion