Troubleshooting Details (Ecu); Gear Position Sensor: Open Or Short Circuit Detected - Yamaha R1 Series 2015 Service Manual

EAS30508

TROUBLESHOOTING DETAILS (ECU)

This section describes the measures per fault code number displayed on the meter. Check and service
the items or components that are the probable cause of the malfunction following the order given.
After the check and service of the malfunctioning part have been completed, reset the meter display
according to the reinstatement method.
Fault code No.:
Fault code number displayed on the meter when the engine failed to work normally.
Diagnostic code No.:
Diagnostic code number to be used when the diagnostic mode is operated. Refer to "DIAGNOSTIC
MODE (ECU)" on page 8-51.
Fault code No. 8
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Meter display
Procedure
Item Probable cause of
malfunction and check
1 Connection of throttle position
sensor 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).
2 Connection of wire harness
ECU 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).
3 Wire harness continuity.
4 Installed condition of gear posi-
tion sensor.
Check for looseness or pinch-
ing.
5 Display of each gear position on
the meter
8

Gear position sensor: open or short circuit detected.

Able to start engine
Able to drive vehicle
—
—
—
Maintenance job
Improperly connected
nect the coupler securely or
replace the wire harness.
Improperly connected
nect the coupler securely or
replace the wire harness.
Open or short circuit
the wire harness.
Between gear position sensor
coupler and ECU coupler.
green–green
white–white
blue/red–blue/red
Improperly installed sensor
Reinstall or adjust the sensor.
Refer to "INSTALLING THE
GEAR POSITION SENSOR" on
page 5-70.
Make sure that the position of
each gear is correctly displayed
on the meter.
If incorrect Replace the gear
position sensor.
8-54
FUEL INJECTION SYSTEM
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.
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 3.
Replace Turn the main switch to "ON".
Fault code number is not dis-
played Service is finished.
Fault code number is displayed
Go to item 4.
Turn the main switch to "ON".
Fault code number is not dis-
played Service is finished.
Fault code number is displayed
Go to item 5.
Turn the main switch to "ON".
Fault code number is not dis-
played Service is finished.
Fault code number is displayed
Go to item 6.
pletion