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EAM30354
FEATURES OF THE YAMAHA DIAGNOSTIC TOOL
A diagnosis can be made more quickly than traditional methods with the Yamaha diagnostic tool.
Using this software, ECU and sensor data, as well as fault diagnosis, vehicle maintenance, and any
necessary information can be recorded and displayed on your computer screen through a USB adapter
connected to the computer interface with a communication cable connected to the vehicle's ECU.
Data obtained in various functions can be saved as vehicle history, and can be accumulated.
EAM30355
FUNCTIONS OF THE YAMAHA DIAGNOSTIC TOOL
Fault diagnosis mode
Function diagnostic mode
Inspection mode
CO adjustment mode
Monitoring mode
Logging mode
View log
ECU rewrite
However, the diagnostic tool cannot be used to freely change the basic vehicle functions, such as ad-
justing the ignition timing.
EAM30356
CONNECTING THE YAMAHA DIAGNOSTIC TOOL
1. Remove the coupler for connecting setting tool.
2. Connect the FI diagnostic tool sub-lead.
3. Connect the FI diagnostic tool sub-lead to the Yamaha diagnostic tool.
EWA20450
WARNING
Never connect the sub-lead (special tool) to the battery. Otherwise, because of excessive cur-
rent flow, the sub-lead can catch fire and the battery could be damaged.
FUEL INJECTION SYSTEM
Fault codes recorded on the ECU are read, and the contents
are displayed.
Check the operation of the output value of each sensor and
actuator.
Determine whether each sensor or actuator is functioning
properly.
Adjust the concentration of CO admissions during idling.
Displays a graph of sensor output values for actual operating
conditions.
Records and saves the sensor output value in actual driving
conditions.
Displays the logging data.
If necessary, the ECU is rewritten using the ECU rewrite data
provided by Yamaha. Ignition timing adjustment, etc. cannot be
changed from the vehicle's original state.
FI diagnostic tool sub–lead
90890-03212
FI diagnostic tool sub–lead
YU-03212
8-26
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Troubleshooting
