Yamaha YZF-R15, Service Manual

Page: 293 / 338

5. Turn the main switch to “OFF” to cancel the normal mode.
6. Disconnect the FI diagnostic tool and connect the self-diagnosis signal connector.
Setting the diagnostic mode
1. Turn the main switch to “OFF”.
2. Disconnect the self-diagnosis signal connector “1”, and then connect the FI diagnostic tool “2” as
shown.
3. While press the “MODE” button, turn the main switch to “ON”.
NOTE:
• “DIAG” appears on the LCD of the FI diagnostic tool.
• “POWER” LED (Green) comes on.
4. Press the “UP” button to select the CO adjustment mode “CO” or the diagnostic mode “DIAG”.
5. After selecting “DIAG”, press the “MODE” button.
6. Select the diagnostic code number corresponding to the fault code number by pressing the“UP” and
“DOWN” buttons.
NOTE:
• The diagnostic code number appears on the LCD (01-70).
• To decrease the selected diagnostic code number, press the “DOWN” button. Press the “DOWN” but-
ton 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 automatically increase the diagnostic code numbers.
7. Verify the operation of the sensor or actuator.
• Sensor operation
The data representing the operating conditions of the sensor appear on the LCD.
• Actuator operation
Press the “MODE” button.
1
2
FI Diagnostic Tool
D03 : 101
8-36 8-35
FUEL INJECTION SYSTEM FUEL INJECTION SYSTEM
DIAGNOSTIC MODE
It is possible to monitor the sensor output data or check the activation of actuators with the FI diagnostic
tool connected to the vehicle and set to the normal mode or the diagnostic monitoring mode.
Setting the normal mode
The engine speed, coolant temperature, and fault code, if detected, can be displayed on the LCD of the
FI diagnostic tool when the tool is connected to the vehicle and is set to the normal mode.
1. Turn the main switch to “OFF”.
2. Disconnect the self-diagnosis signal connector “1”, and then connect the FI diagnostic tool “2” as
shown.
3. Turn the main switch to “ON” and start the engine.
• Coolant temperature and engine revolution appear on the LCD of the FI diagnostic tool.
• “POWER” LED (green) comes on.
• If a malfunction is detected in the system, “WARNING” LED (orange) comes on.
4. Stop the engine.
If a malfunction is detected in the system, the fault code appears on the LCD of the FI diagnostic tool.
And also, “WARNING” LED (orange) comes on.
FI Diagnostic Tool
0rpm 66 ºC
S/D : 41
Communication error with the FI diagnostic tool
LCD Display Symptom Probable cause of malfunction
Waiting for con-
nection.... No signals are received
from the ECU.
• Improper connection in connecting lead.
• The main switch is “OFF” position.
• Malfunction in FI diagnostic tool.
• Malfunction in ECU.
ERROR 4
Commands from the FI di-
agnostic tool are not ac-
cepted by the ECU.
• Turn the main switch to “OFF” once, and then
set the FI diagnostic tool to CO adjustment
mode or diagnostic mode.
• Vehicle battery is insufficiently charged.
• Malfunction in FI diagnostic tool.
• Malfunction in ECU.