Yamaha YFM700RV 2009 Service Manual page 255

FI Diagnostic Tool
D03 : 101
FUEL INJECTION SYSTEM
Setting the diagnostic mode
1. Turn the main switch to "OFF" and set the
engine stop switch to "RUN".
2. Disconnect the wire harness coupler from
the fuel pump.
3. Remove the self-diagnosis signal coupler
cap, and then connect the FI diagnostic tool
1 as shown.
1
4. While press the "MODE" button, turn the
main switch to "ON".
NOTE:
_
• "DIAG" appears on the LCD of the FI diag-
nostic tool.
• "POWER" LED (Green) comes on.
5. Press the "UP" button to select the CO
adjustment mode "CO" or the diagnostic
mode "DIAG".
6. After selecting "DIAG", press the "MODE"
button.
7. Select the diagnostic code number corre-
sponding to the fault code number by press-
ing the "UP" and "DOWN" buttons.
NOTE:
_
• The diagnostic code number appears on the
LCD (D01-D70).
• To decrease the selected diagnostic code
number, press the "DOWN" button. Press the
"DOWN" button for 1 second or longer to
automatically decrease the diagnostic code
numbers.
• To increase the selected diagnostic code
number, press the "UP" button. Press the
"UP" button for 1 second or longer to auto-
matically increase the diagnostic code num-
bers.
8. Verify the operation of the sensor or actua-
tor.
• Sensor operation
The data representing the operating condi-
tions of the sensor appear on the LCD.
• Actuator operation
Set the engine stop switch to "OFF" and
then to "RUN".
9. Turn the main switch to "OFF" to cancel the
diagnostic mode.
10.Disconnect the FI diagnostic tool and con-
nect the self-diagnosis signal connector
cap.
11.Connect the wire harness coupler to the
fuel pump.
6 - 8
FI