Yamaha FJR13AG, Service Manual

Page: 610 / 784

FUEL INJECTION SYSTEM
8-133
Fault code No. U0125 (FJR13ESG)
TIP
If fault code numbers “U0125” and “P1600” are both indicated, take the actions specified for fault code
number “U0125” first.
5 Defective atmospheric pressure
sensor. Execute the diagnostic mode.
(Code No. 02)
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 lev-
el: Approx. 90 kPa (675.1
mmHg, 26.6 inHg)
2000 m (6700 ft) above sea lev-
el: Approx. 80 kPa (600.0
mmHg, 23.6 inHg)
3000 m (9800 ft) above sea lev-
el: Approx. 70 kPa (525.0
mmHg, 20.7 inHg)
Displayed value is incorrect.
→
Replace the atmospheric
pressure sensor.
Turn the main switch to “ON”,
and then check the condition of
the fault code using the mal-
function mode of the Yamaha di-
agnostic tool.
Condition is “Recovered”
→
Go
to item 7 and finish the service.
Condition is “Detected”
→
Go to
item 6.
6 Malfunction in ECU. Replace the ECU.
Refer to “REPLACING THE
ECU (engine control unit)” on
page 8-250. Service is finished.
7 Delete the fault code and check
that the engine trouble warning
light goes off. Confirm that the fault code has
a condition of “Recovered” us-
ing the Yamaha diagnostic tool,
and then delete the fault code.
Fault code No. P2228, P2229
Item
[P2228] Atmospheric pressure sensor: ground short circuit detect-
ed.
[P2229] Atmospheric pressure sensor: open or power short circuit
detected.
Fault code No. U0125
Item Signals cannot be transmitted between the ECU and the IMU.
Fail-safe system
Unable to start engine
Able/Unable to drive vehicle
Diagnostic code No. —
Tool display —
Procedure —
Item
Probable cause of malfunc-
tion and check
Maintenance job
Confirmation of service com-
pletion