Yamaha XSR900 2022, Service Manual

Page: 374 / 726

8-27
SIGNALING SYSTEM
Quick shift system does not operate.
1. Check that the Auxiliary system
warning does not come on.
NG
→
Repair the faulty parts.
OK
↓
2. Check that the quick shift system is
working under normal quick shift
system operating conditions. NG
→
Check the quick shift system operating
conditions explained in the owner’s manu-
al and operate the quick shift system ac-
cordingly.
OK
↓
3. Make sure that the quick shift sys-
tem is effective.
(Check whether the “QS
” icon
is displayed at the top of the me-
ter.)
NG
→
Activate the quick shift system. (Set the
quick shift system to a setting other than
“OFF”.)
OK
↓
4. Are you operating while the
“QS ” icon is lit?
NG
→
Operate while the “QS ” icon is lit.
OK
↓
5. Is the transmission gear display
normal?
NG
→
Repair the gear position sensor.
OK
↓
6. Check the connection of the cou-
pler between the gear position sen-
sor and the ECU. NG
→
Connect the gear position sensor coupler.
OK
↓
7. Are the clutch and neutral switches
normal?
NG
→
Repair the switch if it is not normal.
OK
↓
8. Check the shift sensor value in the
diagnostic mode.
2.5 V when the shift pedal is not be-
ing operated.
4.5 V when the shift pedal is
pressed fully in.
0.5 V when the shift pedal is
pushed fully up.
NG
→
Replace the shift sensor.
OK
↓
9. Check the entire signaling sys-
tem’s wiring.
Refer to “CIRCUIT DIAGRAM” on
page 8-21.
NG
→
Properly connect or repair the signaling
system’s wiring.