Yamaha YZF-R1P Service Manual page 357

Fault code No. 17
Used diagnostic code 53
Inspection operation item and probable cause Operation item and countermeasure
Defective EXUP servo motor potention circuit. Replace if defective.
Open or short circuit in wire harness.
Connected condition of connector
Inspect the coupler for any pins that may have
pulled out.
Check the locking condition of the coupler.
FUEL INJECTION SYSTEM
Symptom EXUP servo motor potention circuit - open or short circuit detected.
1. Disconnect the EXUP servomotor coupler
from the wire harness.
2. Connect the pocket tester (Ω × 1k) to the
EXUP servomotor coupler.
Positive tester terminal → orange 1
Negative tester probe → white 2
3. While slowly turning the EXUP servomotor
pulley, measure the EXUP servomotor
resistance.
4. Is the EXUP servomotor OK?
Repair or replace if there is an open or short
circuit.
Between motor coupler and ECU coupler
Blue - Blue
White/Red - White/Red
Black/Blue - Black/Blue
If there is a malfunction, repair it and connect it
securely.
EXUP servo motor coupler
Main wire harness ECU coupler
7 - 16
1
2
EXUP servomotor resistance
(when the pulley is turned once)
0 ~ approximately
7.5 kΩ (blue - white/red)
FI
Reinstatement
method
Reinstated by turn-
ing the main switch
ON.