Yamaha YZF-R125 Service Manual: 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 the order given.

After the check and service of the malfunctioning part have been completed, reset the FI diagnostic tool display according to the reinstatement method.

Fault code No.: Fault code number displayed on the FI diagnostic tool when the engine failed to work normally. Refer to "Diagnostic code table".

Diagnostic code No.: Diagnostic code number to be used when the diagnostic mode is operated. Refer to "Sensor operation table" and "Actuator operation table".

Troubleshooting details


Troubleshooting details


Troubleshooting details


Troubleshooting details


Troubleshooting details


Troubleshooting details


Troubleshooting details


Troubleshooting details


Troubleshooting details


Troubleshooting details


Troubleshooting details


    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 ...

    Fuel pump system
    ...

    Other materials:

    Checking the water pump
    1. Check: Water pump housing cover Water pump housing Cracks/damage Replace. Impeller shaft Cracks/damage/wear Replace. Bearing Rough movement Replace. Radiator outlet hose Cracks/damage Replace. ...

    Specifications
    Dimensions: Overall length: 2015 mm (79.3 in) Overall width: 660 mm (26.0 in) Overall height: 1065 mm (41.9 in) Seat height: 818 mm (32.2 in) Wheelbase: 1355 mm (53.3 in) Ground clearance: 155 mm (6.10 in) Minimum turning radius: 3100 mm (122.0 in) Weight: With oil and fuel: 138.0 k ...

    Checking the rear brake disc
    1. Remove: Rear wheel Refer to "REAR WHEEL" on page 4-12. 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. Refer to "CHECKING THE FRONT BRAKE DIS ...

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