Yamaha Diagnostic Tool - Yamaha YZ250F(E) Owner's Service Manual

YAMAHA DIAGNOSTIC TOOL

This model uses the Yamaha diagnostic tool to identify malfunctions.
For information about using the Yamaha diagnostic tool, refer to the operation manual that is included
with the tool.
Yamaha diagnostic tool
90890-03215
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.
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
adjusting the ignition timing.
CONNECTING THE YAMAHA DIAGNOSTIC TOOL
1. Remove the coupler for connecting setting tool.
FUEL INJECTION SYSTEM
Fault codes recorded on the ECU are read, and the con-
tents 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 oper-
ating conditions.
Records and saves the sensor output value in actual driv-
ing 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.
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