Yamaha YZF-R125 Service Manual: Circuit diagram

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 temperature sensor

21.Throttle position sensor

22.Coolant temperature sensor

23.Lean angle sensor

24.Self-diagnosis signal connector

25.ECU (engine control unit)

26.Ignition coil

27.Spark plug

28.FID (fast idle solenoid)

29.Fuel injector

30.Fuel pump

32.Radiator fan motor relay

33.Radiator fan motor

63.Engine trouble warning light

64.Ignition fuse

66.Signaling system fuse

67.Speed sensor

    Fuel injection system
    ...

    Ecu self-diagnostic function
    The ECU is equipped with a self-diagnostic function in order to ensure that the fuel injection system is operating normally. If this function detects a malfunction in the system, it immediately o ...

    Other materials:

    Assembling the front wheel
    1. Install: Wheel bearings Oil seal a. Install the new wheel bearings and oil seal in the reverse order of disassembly. CAUTION:Do not contact the wheel bearing inner race "1" or balls "2". Contact should be made only with the outer race "3". NOTE: Use a socket " ...

    Checking the front brake master cylinder
    1. Check: Brake master cylinder Damage/scratches/wear Replace. Brake fluid delivery passages (brake master cylinder body) Obstruction Blow out with compressed air. 2. Check: Brake master cylinder reservoir Cracks/damage Replace the brake master cylinder. Brake maste ...

    Identification
    Vehicle identification number The vehicle identification number "1" is stamped into the right side of the steering head pipe. Model label The model label "1" is affixed to the frame. This information will be needed to order spare parts. ...

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