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.

Setting the diagnostic mode


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

Diagnostic code table


Diagnostic code table


Sensor operation table

Sensor operation table


Sensor operation table


Actuator operation table

Actuator operation table


Communication error with the FI diagnostic tool

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:

    Unstable handling
    Handlebars - Bent or improperly installed right handlebar - Bent or improperly installed left handlebar 1. Steering head components - Improperly installed upper bracket - Improperly installed lower bracket (improperly tightened ring nut) - Bent steering stem - Damaged ball bearing or bearing ...

    Checking the relays
    Check each switch for continuity with the pocket tester. If the continuity reading is incorrect, replace the relay. 1. Disconnect the relay from the wire harness. 2. Connect the pocket tester ( × 1) and battery (12 V) to the relay terminal as shown. Check the relay operation. Out ...

    Installing the rear brake master cylinder
    1. Install: Copper washers "1" Brake hose "2" Rear brake light switch "3" WARNINGProper brake hose routing is essential to insure safe vehicle operation. Refer to "CABLE ROUTING" on page 2-33. CAUTION:When installing the brake hose onto the brake master ...

    2019 Copyright www.yam-r125.net |