Yamaha GRIZZLY 700 FI YFM7FGPW, Service Manual

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FI
FUEL INJECTION SYSTEM
Fault code No. 14 Symptom Intake air pressure sensor: hose system malfunction
(clogged or detached hose).
Diagnostic code No. D03 Intake air pressure sensor
Order Item/components and probable
cause
Check or maintenance job Reinstatement
method
1 Intake air pressure sensor hose • Check the intake air pressure
sensor hose condition.
• Repair or replace the sensor
hose.
Starting the
engine and
operating it at
idle.
2 Intake air pressure sensor mal-
function at intermediate electrical
potential. • Check and repair the connec-
tion.
• Replace it if there is a malfunc-
tion.
3 Connections
• Intake air pressure sensor cou-
pler
• Main wire harness-ECU coupler
• Check the coupler for any pins
that may be pulled out.
• Check the locking condition of
the coupler.
• If there is a malfunction, repair it
and connect the coupler
securely.
4 Defective intake air pressure sen-
sor. • Execute the diagnostic mode.
(Code No.D03)
• Replace if defective.
Refer to “CHECKING THE
INTAKE AIR PRESSURE SEN-
SOR”.