7-20
FUEL INJECTION SYSTEM
FI
EXUP servomotor resistance
(when the pulley is turned once)
5.25
X
9.75 k
Ω
at 20
_
C (68
_
F)
Positive tester terminal
!
blue
Negative tester probe
!
white / red
1
2
Fault code No.
17
Symptom
EXUP servo motor potention circuit – open or short circuit detected.
Used diagnostic code 53
Order
Inspection operation item and probable
cause
Operation item and countermeasure
Reinstatement
method
1
Connected condition of connector
Inspect the coupler for any pins that
may have pulled out.
Check the locking condition of the
coupler.
If there is a malfunction, repair it and connect it
securely.
EXUP servo motor coupler
Main wireharness ECU coupler
Reinstated by
turning the
main switch
ON.
2
Open or short circuit in wire harness.
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
3
Defective EXUP servo motor potention
circuit.
Execute the diagnostic mode (Code No.53).
Replace if defective.
1. Disconnect the EXUP servomotor coupler from
the wire harness.
2. Connect the pocket tester (
Ω
1k) to the
EXUP servomotor coupler.
3. While slowly turning the EXUP servomotor
pulley, measure the EXUP servomotor resis-
tance.
4. Is the EXUP servomotor OK?
Содержание YZF-R1S
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