Yamaha YZF-R125 Service Manual: Fuel injection system
- Circuit diagram
- Ecu self-diagnostic function
- Self-diagnostic function table
- Troubleshooting method
- Diagnostic mode
- Troubleshooting details
Troubleshooting
NOTE:
Before troubleshooting, remove the following part(s):
1. Rider seat
2. Fuel tank
3. Right upper side cowling
4. Passenger seat
...
Circuit diagram
2. Crankshaft position sensor
4. Main fuse
5. Main switch
6. Radiator fan motor fuse
8. Sidestand switch
9. Battery
17.Engine stop switch
19.Intake air pressure sensor
20.Intake air temper ...
Other materials:
Checking the front brake disc
1. Remove:
Front wheel
Refer to "FRONT WHEEL" on page 4-6.
2. Check:
Brake disc
Damage/galling Replace.
3. Measure:
Brake disc deflection
Out of specification Correct the
brake disc
deflection or replace the brake disc.
a. Place the vehicle on a suitable stand ...
Checking the stator coil
1. Disconnect:
Stator coil coupler
(from the wire harness)
2. Check:
Stator coil resistance
Out of specification → Replace the
crankshaft
position sensor/stator assembly.
a. Connect the pocket tester ( ×
1) to the stator
coil coupler as shown.
b. Measure the sta ...
Adjusting the throttle cable free play
NOTE:
Prior to adjusting the throttle cable free play, the
engine idling speed should be adjusted.
1. Check:
Throttle cable free play "a"
Out of specification →Adjust.
2. Remove:
Right side panel
Refer to "GENERAL CHASSIS" on page 4-1.
3. Adjust:
Throttle cable f ...