Yamaha YZF-R125 Service Manual: Checking the fid (fast idle solenoid)
1. Disconnect:
- FID (fast idle solenoid) coupler
2. Check:
- FID (fast idle solenoid) resistance
a. Disconnect the FID (fast idle solenoid) coupler from the FID.
b. Connect the pocket tester ( 
× 10)
to the terminals
of the FID (fast idle solenoid).
- Positive tester probe
red/black terminal "1" - Negative tester probe
yellow/red terminal "2"
c. Measure the FID (fast idle solenoid) resistance.
Out of specification Replace
the throttle
body assembly.
Intake air temperature sensor
1. Check:
Intake air temperature sensor resistance
Out of specification Replace
the throttle
body.
a. Connect the pocket tester ( ×
1k) to the
throttle body sensor assembly co ...
Troubleshooting
...
Other materials:
Safe Riding
Perform the pre-operation checks each
time you use the vehicle to make sure it
is in safe operating condition. Failure to
inspect or maintain the vehicle properly
increases the possibility of an accident
or equipment damage. See page 4-1
for a list of pre-operation checks.
This motor ...
Checking the diode
1. Check:
Diode
Out of specification Replace.
NOTE:
The pocket tester or the analog pocket tester
readings are shown in the following table.
a. Disconnect the diode from the wire harness.
b. Connect the pocket tester ( × 1)
to the diode
terminals as shown.
c. Check the diod ...
Checking the starter motor
1. Check:
Commutator
Dirt Clean with 600 grit
sandpaper.
2. Measure:
Commutator diameter "a"
Out of specification Replace
the starter
motor.
3. Measure:
Mica undercut "a"
Out of specification Scrape
the mica to the
proper measurement with a hacksaw blade
...