Yamaha R1 Series 2015 Service Manual page 564

Fault code No.
Item
A-5 Wire harness continuity.
A-6 Malfunction in ECU.
A-7 Malfunction in ABS ECU.
A-8 Delete the fault code.
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Meter display
Procedure
Item Probable cause of
malfunction and check
42
Rear wheel sensor: no normal signals are received from the rear
A
wheel sensor.
B Neutral switch: open or short circuit is detected.
C Clutch switch: open or short circuit is detected.
Open or short circuit
the wire harness.
Between rear wheel sensor cou-
pler and ABS ECU coupler.
black–black
white–white
Between ABS ECU coupler and
ECU coupler.
white/blue–white/blue
Replace the ECU.
Refer to "REPLACING THE
ECU (Engine Control Unit)" on
page 8-180.
Replace the ABS ECU.
42
Rear wheel sensor: no normal signals are received from the rear
A
wheel sensor.
B Neutral switch: open or short circuit is detected.
C Clutch switch: open or short circuit is detected.
Able to start engine
Able to drive vehicle
21
Neutral
• "ON" (when the transmission is in neutral)
• "OFF" (when the transmission is in gear or the clutch lever released)
Shift the transmission.
Maintenance job
8-83
FUEL INJECTION SYSTEM
Replace Execute the diagnostic mode.
(Code No. 07)
Rotate the rear wheel by hand
and check that the indicated
value increases.
Value increases
A-8 and delete the fault code.
Value does not increase
to item A-6.
Execute the diagnostic mode.
(Code No. 07)
Rotate the rear wheel by hand
and check that the indicated
value increases.
Value increases
A-8 and delete the fault code.
Value does not increase
to item A-7.
Go to item A-8 and delete the
fault code.
Turn the main switch to "ON",
and then rotate the rear wheel
by hand.
Start the engine, and input the
vehicle speed signals by operat-
ing the vehicle at 20 to 30 km/h
(19 mi/h).
The fault code can also be
deleted by activating the diag-
nostic mode and selecting diag-
nostic code number "63".
Confirmation of service com-
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pletion