Yamaha MTN1000 2016 Service Manual page 460

Fault code No. P0069
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Tool display
03
Procedure
Tool display
02
Procedure
Probable cause of malfunc-
Item
tion and check
1 Defective intake air pressure
sensor.
2 Defective atmospheric pressure
sensor.
3 Malfunction in ECU.
4 Delete the fault code and check
that the engine trouble warning
light goes off.
P0069
Intake air pressure sensor or atmospheric pressure sensor: when
the main switch is turned to "ON", the intake air pressure sensor
voltage and atmospheric pressure sensor voltage differ greatly.
Able to start engine
Able to drive vehicle
03, 02
Displays the intake air pressure.
Operate the throttle while pushing the "
switch. (If the display value changes, the performance is OK.)
Displays the atmospheric pressure.
Compare the actually measured atmospheric pressure with the tool dis-
play value.
Maintenance job
Execute the diagnostic mode.
(Code No. 03)
When engine is stopped: Atmo-
spheric pressure at the current
altitude and weather conditions
is indicated.
0 m above sea level: Approx.
101 kPa (757.6 mmHg, 29.8
inHg)
3000 m (9800 ft) above sea
level: Approx. 70 kPa (525.0
mmHg, 20.7 inHg)
Displayed value is incorrect 
Replace the intake air pressure
sensor.
Execute the diagnostic mode.
(Code No. 02)
When engine is stopped: Atmo-
spheric pressure at the current
altitude and weather conditions
is indicated.
0 m above sea level: Approx.
101 kPa (757.6 mmHg, 29.8
inHg)
3000 m (9800 ft) above sea
level: Approx. 70 kPa (525.0
mmHg, 20.7 inHg)
Displayed value is incorrect 
Replace the atmospheric pres-
sure sensor.
Replace the ECU.
Refer to "REPLACING THE
ECU (Engine Control Unit)" on
page 8-194.
Confirm that the fault code has
a condition of "Recovered"
using the Yamaha diagnostic
tool, and then delete the fault
code.
8-43
FUEL INJECTION SYSTEM
" side of the start/engine stop
Confirmation of service com-
Turn the main switch to "ON",
and then check the condition of
the fault code using the mal-
function mode of the Yamaha
diagnostic tool.
Condition is "Recovered"  Go
to item 4 and finish the service.
Condition is "Detected"  Go to
item 2.
Turn the main switch to "ON",
and then check the condition of
the fault code using the mal-
function mode of the Yamaha
diagnostic tool.
Condition is "Recovered"  Go
to item 4 and finish the service.
Condition is "Detected"  Go to
item 3.
Service is finished.
pletion