Yamaha Tracer MT09TRAH 2017 Service Manual page 450

Fault code No. P1004
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Tool display
03
Procedure
Tool display
04
Procedure
Probable cause of malfunc-
Item
tion and check
1 Defective intake air pressure
sensor 1.
2 Defective intake air pressure
sensor 2.
P1004
Intake air pressure sensor 1 or intake air pressure sensor 2: when
the main switch is turned to "ON", the intake air pressure sensor 1
voltage and intake air pressure sensor 2 voltage differ greatly.
Able to start engine
Able to drive vehicle
03, 04
Displays the intake air pressure 1.
Operate the throttle while pushing the "
switch. (If the display value changes, the performance is OK.)
Displays the intake air pressure 2.
Operate the throttle while pushing the "
switch. (If the display value changes, the performance is OK.)
Maintenance job
Execute the diagnostic mode.
(Code No. 03)
When engine is stopped:
Atmospheric 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 
Check the intake air pressure
sensor 1.
Replace if defective.
Refer to "CHECKING THE
INTAKE AIR PRESSURE SEN-
SOR" on page 8-172.
Execute the diagnostic mode.
(Code No. 04)
When engine is stopped:
Atmospheric 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 
Check the intake air pressure
sensor 2.
Replace if defective.
Refer to "CHECKING THE
INTAKE AIR PRESSURE SEN-
SOR" on page 8-172.
8-79
FUEL INJECTION SYSTEM
" side of the start/engine stop
" 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.
pletion