Kokusan Denki (Tohatsu), diagnostics cable

Jaltest JDC624.9 - Kokusan Denki (Tohatsu) Diagnostics Cable

The JDC624.9 is the Jaltest marine diagnostic cable designed specifically for Kokusan Denki ignition systems used in Tohatsu outboard engines. Kokusan Denki is the OEM supplier of CDI units and ignition controllers found in Tohatsu-branded outboards, and this 18-pin cable gives your Jaltest diagnostic system direct access to those ECUs. If you service Tohatsu 25 HP or 30 HP outboards and need proper fault code reading, live data, and system diagnostics — this is the cable that makes it possible.

What This Cable Does

The JDC624.9 bridges your Jaltest Link V9 interface to the 18-pin diagnostic port on Tohatsu outboard engines equipped with the Kokusan Denki electronic control system. Without this cable, the Jaltest software cannot communicate with these engines. With it, you gain full diagnostic access through the Jaltest Marine platform.

Cable Specifications

• Part Number: JDC624.9
• Connector Type: 18-pin Kokusan Denki / Tohatsu diagnostic connector
• Cable Length: 28-30 cm (approximately 11 inches)
• Compatible Models: Tohatsu outboard engines 25 HP and 30 HP
• Link Version Compatibility: Jaltest Link V9
• System Compatibility: Jaltest Marine diagnostic platform
• MSRP: $215.00

Compatible Engines

This cable is confirmed compatible with Tohatsu outboard engines models 25 and 30 HP that use the Kokusan Denki ignition and CDI management system. Tohatsu produces outboards sold under both the Tohatsu brand and in certain configurations under Nissan Marine. If your customer is running a Tohatsu in the 25-30 HP range with a Kokusan Denki ECU, this is the connector you need.

What Jaltest Marine Gives You With This Cable

Once connected, the Jaltest Marine software with an active Marine license enables:

• Fault code reading and clearing — pull DTCs stored in the Kokusan Denki control unit
• Live data monitoring — view sensor values, RPM, temperature, and other parameters in real time
• System diagnostics — identify electronic issues in the ignition and fuel management system
• Professional-grade access — the same level of diagnostic depth a dealer would use

Who Needs the JDC624.9

This cable is for marine mechanics and service shops that work on Tohatsu outboards. If you are a multi-brand marine shop and you see Tohatsu engines come through the door, this cable pays for itself the first time you pull a code that would have otherwise required a dealer visit. Requires an active Jaltest Marine license (Outboard, Boat, or Full coverage).

Why Buy From OEM Diagnostic Tools?

OEM Diagnostic Tools has been a specialist in professional diagnostic equipment since 2016. We stock genuine Jaltest cables and accessories, ship free on every order, and back every purchase with our full warranty. When you have a compatibility question or need to figure out which cable fits which engine, call us — you get a real technician, not a call center script.

Call 866-217-0063 for quick answers and help!