Exup Servo Motor: Open Or Short Circuit Detected - Yamaha R1 Series 2015 Service Manual

Fault code No.
Item
6 Defective throttle position sen-
sor.
7 Malfunction in ECU.
Fault code No. 17
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Actuation
Procedure
Item Probable cause of
malfunction and check
1 Connection of EXUP servo
motor 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).
15
Throttle position sensor: open or short circuit detected.
Check throttle position sensor
signal 1.
Execute the diagnostic mode.
(Code No. 01)
When the throttle valves are
fully closed:
A value of 11–21 is indicated.
When throttle valves are fully
open:
A value of 96–106 is indicated.
Check throttle position sensor
signal 2.
Execute the diagnostic mode.
(Code No. 13)
When the throttle valves are
fully closed:
A value of 9–23 is indicated.
When the throttle valves are
fully open:
A value of 94–108 is indicated.
An indicated value is out of the
specified range
throttle position sensor.
Replace the ECU.
Refer to "REPLACING THE
ECU (Engine Control Unit)" on
page 8-180.
17

EXUP servo motor: open or short circuit detected.

Able to start engine
Able to drive vehicle
53
After the EXUP is fully closed, it stops at the opening base position (inter-
mediate position).
This operation takes approximately 3 seconds during which time the
warning light comes on.
Check the operating sound.
Maintenance job
Improperly connected
nect the coupler securely or
replace the wire harness.
8-61
FUEL INJECTION SYSTEM
Turn the main switch to "ON".
Fault code number is not dis-
played
Fault code number is displayed
Go to item 7.
Replace the
Confirmation of service com-
Con- Turn the main switch to "ON".
Fault code number is not dis-
played
Fault code number is displayed
Go to item 2.
Service is finished.
pletion
Service is finished.