Yamaha FJR1300N 2001 Service Manual page 487

Code No. 14
Used diagnostic code
Inspection operation item and probable cause Operation item and countermeasure
1 Intake air pressure sensor hose detached,
clogged, kinked, or pinched.
Intake air pressure sensor malfunction at
intermediate electrical potential.
Atmospheric pressure sensor malfunction at
intermediate electrical potential.
2 Open or short circuit in wiring harness or
sub lead.
Defective intake air pressure sensor.
3 Open or short circuit in wiring harness or
sub lead.
Defective throttle position sensor.
Throttle position sensor lead wire open circuit
output voltage check
(B/L - Y)
Black/Blue - Yellow
Common to 1, 2, and 3:
Connected state of connector
Inspect the coupler for any pins that may
have pulled out.
Check the locking condition of the coupler.
FUEL INJECTION SYSTEM
Symptom 1 Intake air pressure sensor - pipe system malfunction (clogged or
detached hose).
2 Intake air pressure sensor - open or short circuit detected.
3 Stuck throttle position sensor detected.
No. 03 (intake air pressure sensor)
No. 02 (atmospheric pressure sensor)
No. 01 (throttle position sensor)
Repair or replace the sensor hose.
Inspect and repair the connection.
Replace it if there is a malfunction.
Repair or replace if there is an open or short
circuit.
Main wiring harness
Sub lead
Replace if defective.
Refer to "FUEL INJECTION SYSTEM" in
chapter 8.
Repair or replace if there is an open or short
circuit.
Main wiring harness
Sub lead
Replace if defective.
Refer to "FUEL INJECTION SYSTEM" in
chapter 8.
Open circuit item:
Ground wire open circuit:
Output wire open circuit:
Power supply wire open circuit: 0 V
Check for open circuit and replace the throttle
position sensor.
If there is a malfunction, repair it and connect it
securely.
Black/Blue - Black/Blue
Pink/White - Pink/White
Blue - Blue
Black/Blue - Black/Blue
Pink/White - Pink/White
Blue - Blue
Black/Blue - Black/Blue
Yellow - Yellow
Blue - Blue
Black/Blue - Black/Blue
Yellow - Yellow
Blue - Blue
Intake air pressure sensor coupler
Main wiring harness ECU coupler
7 - 18
FI
Reinstatement
method
Reinstated by
starting the engine
and operating it at
idle.
Reinstated by
starting the engine,
operating it at idle,
and then by racing
it.
Output voltage
5 V
0 V
Reinstated by
starting the engine
and operating it at
idle.