Yamaha R15 2022 Service Manual page 395

FUEL INJECTION SYSTEM TROUBLESHOOTING
Fault code No.
Item
3-1
1. Throttle body position sensor assembly
2. Throttle position sensor
3. ECU
4. Sensor power supply lead
5. Sensor output lead
6. Sensor ground lead
3-2 Disconnect the ECU coupler from the ECU.
Disconnect the throttle body sensor assembly coupler from the throttle body.
3-3 [For P0122] Ground short circuit
Between throttle position sensor coupler and ground: yellow/white–ground
If there is continuity, replace the wire harness.
3-4 [For P0122] Open circuit
Between throttle position sensor coupler and ECU coupler: blue–blue
If there is no continuity, replace the wire harness.
P0122, P0123
[P0122] Throttle position sensor: open or short to ground circuit is
detected.
[P0123] Throttle position sensor: short to power circuit is detected.
1
L
2
Y/W
P W /
Br/W
B L /
B/L Y/W L P/W Br/W
Ch Y/B B/R R/W L/G R/B
Y/W
G Br R Lg/L W
B/Y L Lg/W W/B B/L B/W
8-62
3
4
L
Y/W
5
P W /
Br/W
B L /
6
V P/W Or/B W/Y B/L W/R Y
Y/R G/R Y/G Y/L B/L L B
Br/W Gy/G Y/W B/L B/L P/B Or
B
ELEC – +