Yamaha YZF-R1S Service Manual page 362

Fault code No. 14
Used diagnostic code No. 03 (intake air pressure sensor)
Order Inspection operation item and probable
cause
1 Intake air pressure sensor hose detached,
clogged, kinked, or pinched.
Intake air pressure sensor malfunction at
intermediate electrical potential.
2 Connected condition of connector
Intake air pressure sensor coupler
Main wiring harness ECU coupler
3 Defective intake air pressure sensor.
FUEL INJECTION SYSTEM
Symptom Intake air pressure sensor – hose system malfunction (clogged or detached
hose).
Operation item and countermeasuer
Repair or replace the sensor hose.
Inspect and repair the connection.
Check the coupler for any pins that may have
pulled out.
Check the looking condition of the coupler.
If there is a malfunction, repair it and connect it
securely.
Execute the diagnostic mode (Code No.03).
Replace if defective.
Refer to "Fault code No. 13".
7-18
FI
Reinstatement
method
Reinstated by
starting the
engine and
operating it at
idle.