Yamaha YZF-R1 2007 Service Manual page 379

Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keys
Fault code No. 23
Diagnostic code No.
Orde Item/components and probable
r cause
1 Connections
• Atmospheric pressure sensor cou-
pler
• Main wire harness ECU coupler
2 Open or short circuit in wire harness
and/or sub wire harness 2.
3 Defective atmospheric pressure sen-
sor.
Fault code No. 24
Diagnostic code No.
Orde Item/components and probable
r cause
1 Installed state of O
2 Connections
• O sensor coupler
2
• Main wire harness ECU coupler
3 Open or short circuit in wire harness.
4 Check fuel pressure.
5 Defective O
2
email: info@motomatrix.co.uk
Atmospheric pressure sensor: open or short circuit
Symptom
detected.
02 Atmospheric pressure sensor
Symptom No normal signal is received from the O
— —
sensor.
2
sensor.
FUEL INJECTION SYSTEM
Check or maintenance job
• 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.
• Repair or replace if there is an
open or short circuit.
• Between atmospheric pressure
sensor coupler and ECU cou-
pler.
(Black/Blue–Black/Blue)
(Pink–Pink)
(Blue–Blue)
• Execute the diagnostic mode.
(Code No.02)
• Replace if defective.
Refer to "CHECKING THE
ATMOSPHERIC PRESSURE
SENSOR" on page 8-102.
Check or maintenance job
Check for looseness or pinching. Execute the
• Check the couplers 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.
• Repair or replace if there is an
open or short circuit.
• Between O sensor coupler and
2
ECU coupler.
(Gray/Green–Gray/Green)
(Black/Blue–Black/Blue)
• Refer to "THROTTLE BODIES"
on page 7-4.
• Replace if defective.
8-52
Reinstatement
method
Reinstated
automatically if
a normal signal
is received.
sensor.
2
Reinstatement
method
diagnostic
mode (Code
No. 63). (Set
the engine stop
switch to " ".)