Yamaha YZF-R125 Service Manual: Intake air pressure sensor
1. Check:
- Intake air pressure sensor output voltage
Out of specification Replace the throttle
body.
a. Connect the pocket tester (DC 20 V) to the
throttle body sensor assembly coupler as
shown.
- Positive tester probe
pink/white "1" - Negative tester probe
gray/black "2"
b. Set the main switch to "ON".
c. Measure the intake air pressure sensor output voltage.
Throttle position sensor
1. Check:
Throttle position sensor
a. Connect the digital circuit tester to the terminals
of the throttle body sensor assembly
coupler as shown.
Positive tester probe →
gray/red t ...
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 ...
Other materials:
Installing the rear shock absorber assembly
1. Install:
Rear shock absorber assembly
Relay arm "1"
NOTE:
Install the relay arm as shown in the illustration.
2. Tighten:
Rear shock absorber assembly upper nut
Relay arm nut
Rear shock absorber assembly lower nut
3. Install:
Connecting arms
NOTE:
When ins ...
Checking the relays
Check each switch for continuity with the pocket
tester. If the continuity reading is incorrect, replace
the relay.
1. Disconnect the relay from the wire harness.
2. Connect the pocket tester ( × 1) and battery
(12 V) to the relay terminal as shown.
Check the relay operation.
Out ...
Multi-function display
Multi-function display
Multi-function display
"RESET/SELECT" button
WARNING
Be sure to stop the vehicle before
making any setting changes to the
multi-function display. Changing
settings while riding can distract the
operator and increase the risk of an
accident.
The multi- ...