Yamaha MX775 - FUEL INJECTION SYSTEM

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ELECTRICAL
FUEL INJECTION SYSTEM
FUEL INJECTION SYSTEM
FI DIAG TOOL INSTRUCTIONS
Purpose
This FI Diagnostic Tool is to diagnose electronic fuel injection system used on Yamaha MX825V-
EFI, MX800V-EFI and MX775V-EFI engines.
Functions
There are 5 Modes in this diag tool.
• “CURRENT”
Displays current error codes.
•“DIAG”
Displays sensor output.
• “HISTORY”
Displays history error codes.
(Diag tool display 1 history error code, if the same error happened in the past.)
• “CLEAR”
Deletes history error codes.
• “PROPERTY”
Display ECU property. (Not needed for usual maintenance)
Operation
• CONNECTING AND DISCONNECTING
1. Turn the main switch “OFF”.
2. Connect the FI Diagnostic Tool to the engine coupler “1”.
3. Turn the main switch “ON”.
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