OBDII Adapter Cable – Yamaha Marine - HP Tuners - H-001-06

Connect directly to supported Yamaha marine applications using HP Tuners’ purpose-built Yamaha Outboard & WaveRunner OBDII Adapter Cables.
These marine adapter cables allow professional tuners, marine technicians, and hands-on owners to connect MPVI3 or MPVI4 interfaces to supported Yamaha marine ECMs for calibration writing.
Unlike standard diagnostic adapters, these cables include integrated battery clips that provide stable external power to the ECM during the calibration write process. Supplying power to the ECM is required in marine applications because the engine must remain off during the process.
Whether you are performing calibration work for performance improvements, improved throttle response, or enhanced fuel efficiency, these Yamaha marine adapter cables provide a reliable connection between your HP Tuners interface and the engine’s ECM.
Available Cable Options
This product page includes the following Yamaha outboard & Waverunner flashing cables:
OBDII Adapter Cable – Yamaha Outboard (34 Pin ECU, Style 1)
OBDII Adapter Cable – Yamaha Outboard (34 Pin ECU, Style 2)
OBDII Adapter Cable – Yamaha WaveRunner (44 Pin ECU, Style 1)
OBDII Adapter Cable – Yamaha Outboard (44 Pin ECU, Style 2)
Use the dropdown selector to choose the cable that matches your Yamaha engine’s ECM connector.
Supported Yamaha Marine & WaveRunner Applications
Which cable do I need?
Yamaha outboards engines and WaveRunner applications use different ECM connector styles depending on model and year. Select the tab that matches your engine’s ECU connector to find the correct flashing cable.
These Yamaha WaveRunner applications use the  44-Pin ECU Connector (Style 1)  and require the  OBDII Adapter Cable – Yamaha WaveRunner (44 Pin ECU, Style 1 ).
Confirm connector type before selecting your cable.
Supported WaveRunner Models:
2017-2025 EX 1.0L
2018-2025 FX 1.8L
2018-2025 VX 1.8L
2016-2025 VX 1.0L
2018-2025 GP 1.8L
2021-2025 Super Jet 1.0L
2022-2025 Jet Blaster 1.0L
Supported Jet Boat Applications:
2017-2025 190-220 Jet Boat 1.0L (6FV, 6KU)
2018-2025 190-275 Jet Boat 1.8L (6AP, 6GN, 6JC)
Key Features
Purpose-built Yamaha marine adapter cables
Designed specifically to connect HP Tuners interfaces to supported custom tuning on Yamaha marine ECM.
Integrated ECM power supply
Includes battery alligator clips that provide stable voltage to the ECM during the calibration write process.
Direct connection to supported marine ECMs
Provides reliable communication between MPVI3 or MPVI4 interfaces and Yamaha controllers.
Important Usage Notes
These cables are designed for calibration writing only.
The engine must remain OFF during the calibration write process.
Stable battery voltage must be maintained during calibration writing.
Always verify connector style before selecting a cable.
For diagnostics, use the  Yamaha 3-Pin Diagnostic Cable .
Requirements
To use these Yamaha marine flashing cables you will need:
MPVI3 or MPVI4 interface
VCM Suite software
Supported Yamaha Marine Application
In the Box
Yamaha Outboard OBDII Adapter Cable (selected style)
Quick Start Guide
Please  click HERE  to see our detailed quick start guide.
Prop65 Disclosures
 CA WARNING: This product can expose you to Nickel, a carcinogen, and Lead, a reproductive toxicant. See  www.P65Warnings.ca.gov /