Yamaha YZF-R125 Service Manual: Checking the lean angle sensor

1. Remove:

  • Lean angle sensor

2. Check:

Lean angle sensor output voltage Out of specification Replace.


a. Connect the lean angle sensor to the wire harness.

b. Connect the pocket tester (DC 20 V) to the lean angle sensor coupler as shown.


Positive tester probe
yellow/green "1"

Negative tester probe
gray/black "2"

Checking the lean angle sensor


c. Set the main switch to "ON".

d. Tilt the lean angle sensor to 65.

e. Measure the lean angle sensor output voltage.

    Checking the crankshaft position sensor
    1. Disconnect: Crankshaft position sensor coupler (from the wire harness) 2. Check: Crankshaft position sensor resistance Out of specification  Replace the crankshaft position senso ...

    Checking the starter motor operation
    1. Check: Starter motor operation Does not operate → Perform the electric starting system troubleshooting, starting with step 4. Refer to "TROUBLESHOOTING" on page 8-9. a. Con ...

    Other materials:

    Troubleshooting charts
    Starting problems or poor engine performance Starting problems or poor engine performance Engine overheating WARNING Do not remove the radiator cap when the engine and radiator are hot. Scalding hot fluid and steam may be blown out under pressure, which could cause serious injury. Be ...

    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 ...

    Removing the front brake caliper
    NOTE: Before disassembling the brake caliper, drain the brake fluid from the entire brake system. 1. Remove: Brake hose union bolt "1" Copper washers "2" Brake hose "3" NOTE: Put the end of the brake hose into a container and pump out the brake fluid carefully. ...

    2021 Copyright www.yam-r125.net |