Yamaha YZF-R125 Service Manual: Setting the diagnostic mode
1. Set the main switch to "OFF" and the engine stop switch to "
".
2. Disconnect the self-diagnosis signal connector "1", and then connect the FI diagnostic tool "2" as shown.
3. Disconnect the fuel pump coupler.
4. While pressing the "MODE" button, set the main switch to "ON".
NOTE:
- "DIAG" appears on the LCD of the FI diagnostic tool.
- "POWER" LED (Green) comes on.
5. Press the "UP" button to select the CO adjustment mode "CO" or the diagnostic mode "DIAG".
6. After selecting "DIAG", press the "MODE" button.
7. Select the diagnostic code number corresponding to the fault code number by pressing the "UP" and "DOWN" buttons.
NOTE:
- The diagnostic code number appears on the LCD (01-70).
- To decrease the selected diagnostic code number, press the "DOWN" button. Press the "DOWN" button for 1 second or longer to automatically decrease the diagnostic code numbers.
- To increase the selected diagnostic code number, press the "UP" button. Press the "UP" button for 1 second or longer to automatically increase the diagnostic code numbers.
8. Verify the operation of the sensor or actuator.
- Sensor operation The data representing the operating conditions of the sensor appear on the LCD.
- Actuator operation
Press the "MODE" button.
9. Set the main switch to "OFF" to cancel the diagnostic mode.
10.Disconnect the FI diagnostic tool and connect the self-diagnosis signal connector.
Diagnostic code table
Sensor operation table
Actuator operation table
Communication error with the FI diagnostic tool
Setting the normal mode
NOTE:
The engine speed, coolant temperature, and fault code, if detected, can be
displayed on the LCD of the
FI diagnostic tool when the tool is connected to the vehicle and is set to the
normal ...
Troubleshooting details
This section describes the measures per fault code number displayed on the FI
diagnostic tool. Check
and service the items or components that are the probable cause of the
malfunction following t ...
Other materials:
Faulty front fork legs
Leaking oil
- Bent, damaged or rusty inner tube
- Cracked or damaged outer tube
- Improperly installed oil seal
- Damaged oil seal lip
- Incorrect oil level (high)
- Loose damper rod assembly bolt
- Damaged damper rod assembly bolt copper
washer
- Cracked or damaged front fork cap O-ring
M ...
Adjusting the front wheel static balance
NOTE:
After replacing the tire, wheel or both, the front
wheel static balance should be adjusted.
Adjust the front wheel static balance with the
brake discs installed.
1. Remove:
Balancing weight(s)
2. Find:
Front wheel's heavy spot
NOTE:
Place the front wheel on a suitab ...
Adjusting the rear disc brake
1. Check:
Brake pedal position
(distance "a" from the center of the rider footrest
to the center of the brake pedal)
Out of specification Adjust.
2. Adjust:
Brake pedal position
a. Loosen the locknut "1".
b. Remove the cotter pin "2", washer "3", and
pin "4".
c. Turn t ...