Yamaha YZF-R125 Service Manual: Circuit diagram

Circuit diagram


4. Main fuse

5. Main switch

9. Battery

25.ECU (engine control unit)

36.License plate light

37.Tail/brake light

44.Headlight relay

46.Pass switch

47.Dimmer switch

51.Headlight (low beam)

52.Auxiliary light

54.Headlight (high beam)

58.Meter light

60.High beam indicator light

64.Ignition fuse

65.Headlight fuse

66.Signaling system fuse

    Lighting system
    ...

    Troubleshooting
    Any of the following fail to light: headlight, high beam indicator light, taillight, license plate light, auxiliary light or meter light. NOTE: Before troubleshooting, remove the following par ...

    Other materials:

    Self-diagnostic function table
    If the ECU detects an abnormal signal from a sensor while the vehicle is being driven, the ECU illuminates the engine trouble warning light and provides the engine with alternate operating instructions that are appropriate for the type of malfunction. When an abnormal signal is received fro ...

    Checking the primary driven gear
    1. Check: Primary driven gear "1" Damage/wear Replace the primary drive gear and clutch housing as a set. Excessive noise during operation  Replace the primary drive gear and clutch housing as a set. ...

    Installing the thermostat
    1. Install: Thermostat NOTE: Install the thermostat with its breather hole "a" facing up. 2. Install: Copper washer Coolant temperature sensor CAUTION:Use extreme care when handling the coolant temperature sensor. Replace any part that was dropped or subjected to ...

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