FUEL INJECTION SYSTEM
8-49
Fault code No.
17
Symptom EXUP servo motor circuit: open or short circuit detected.
Diagnostic code No.
53
EXUP servo motor
Orde
r
Item/components and probable
cause
Check or maintenance job
Reinstatement
method
1
Connections
• EXUP servo motor coupler
• Main wire harness ECU coupler
• Check 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 the coupler
securely.
Reinstated
automatically if
a normal signal
is received.
2
Open or short circuit in wire harness.
• Repair or replace if there is an
open or short circuit.
• Between EXUP servo motor
coupler and ECU coupler.
(Blue–Blue)
(White/Red–White/Red)
(Black/Blue–Black/Blue)
3
Defective EXUP servo motor (potenti-
ometer circuit).
• Execute the diagnostic mode.
(Code No.53)
• Replace if defective.
Fault code No.
18
Symptom EXUP servo motor is stuck.
Diagnostic code No.
53
EXUP servo motor
Orde
r
Item/components and probable
cause
Check or maintenance job
Reinstatement
method
1
Connections
• EXUP servo motor coupler
• Main wire harness ECU coupler
• Check the coupler for any pins
that may be pulled out.
• Check the locking condition of
the couplers.
• If there is a malfunction, repair it
and connect the coupler
securely.
Turning the
main switch to
“ON”.
It takes 3 sec-
onds at the
maximum
before the origi-
nal state
returns.
2
Open or short circuit in wire harness.
• Repair or replace if there is an
open or short circuit.
• Between EXUP servo motor
coupler and ECU coupler.
(Black/Green–Black/Green)
(Black/Red–Black/Red)
3
Defective EXUP servo motor
• Execute the diagnostic mode.
(Code No.53)
• Replace if defective.
4
Defective EXUP valve, pulley, and
cables
Replace if defective.
Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keys
email: [email protected]
Содержание YZF-R1 2007
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