Yamaha FJR1300A(D), Service Manual

Page: 493 / 662

FUEL INJECTION SYSTEM
8-44
TIP
If fault code numbers “13” and “14” are both indicated, take the actions specified for fault code number
“13” first.
5 Defective intake air pressure
sensor. Execute the diagnostic
mode. (Code No. 03)
When engine is stopped:
Atmospheric pressure at the
current altitude and weather
conditions is indicated.
At sea level: Approx. 101 kPa
(757.6 mmHg, 29.8 inHg)
1000 m (3300 ft) above sea
level: Approx. 90 kPa (675.1
mmHg, 26.6 inHg)
2000 m (6700 ft) above sea
level: Approx. 80 kPa (600.0
mmHg, 23.6 inHg)
3000 m (9800 ft) above sea
level: Approx. 70 kPa (525.0
mmHg, 20.7 inHg)
When engine is cranking:
Make sure that the indication
value changes.
The value does not change
when engine is cranking.
→
Check the intake air pressure
sensor.
Replace if defective.
Refer to “CHECKING THE
INTAKE AIR PRESSURE
SENSOR” on page 8-189.
Turn the main switch to “ON”.
Fault code number is not dis-
played
→
Service is finished.
Fault code number is dis-
played
→
Go to item 6.
6 Malfunction in ECU. Replace the ECU.
Refer to “REPLACING THE
ECU (engine control unit)” on
page 8-174.
Fault code No. 14
Item
Intake air pressure sensor: hose system malfunction (clogged
or detached hose).
Fail-safe system
Able to start engine
Able to drive vehicle
Diagnostic code No. 03
Meter display Displays the intake air pressure.
Procedure
Shift the transmission into gear, extend the sidestand, and then
operate the throttle while pushing the “
” side of the start/engine
stop switch. (If the display value changes, the performance is OK.)
Item
Probable cause of mal-
function and check
Maintenance job
Confirmation of service
completion
Fault code No. 13
Item Intake air pressure sensor: open or short circuit detected.