Jaltest (JDC632.9) | Mercury/Tohatsu 6-pins OBD - 26-pins DB26 Adapter Cable | Motorboat
Warranty directly via AsTools
Warranty directly via AsTools
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2 years warranty on all products
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The Jaltest JDC632.9 is the adapter connecting the 6-pin diagnostic connector of small Mercury and Tohatsu outboard engines to the 26-pin DB26-port on the Jaltest Link. This version does not terminate in OBD2: the DB26 connector connects directly to the SubD-26 input on the Link, without an OBD2 intermediate cable. On the engine side, the 6-pin connector is located under the engine cover.
The cable opens the diagnostic line to the engine control unit of these outboard motors: ECM by Tohatsu under Mercury model names and ECM (Engine Control Module) under Tohatsu model names — the same control unit with identical functionality. This allows diagnostic equipment to read fault codes and live data, control components, and monitor values while the engine runs; parameter configuration, calibration, and maintenance reset are not supported on this engine control unit. Jaltest supplies the cable for models in the 10-20 hp power class. The cable falls under Jaltest Marine.
KEY BENEFITS
IMPORTANT NOTES
Applications and features
Through this connection, you can access the engine control of small Mercury and Tohatsu outboard motors using Jaltest software.
Control units you can access
- ECM by Tohatsu — Engine Control Module: This covers the engine management of Mercury models in this power class, including fault codes, live data, sensor readings, component activation, and control unit information.
- ECM — Engine Control Module: The same control unit under Tohatsu model names, with the same feature set.
What you can do
- Read fault codes: Access the engine control fault memory with detailed descriptions of detected issues.
- View sensor data: Monitor current readings from all sensors connected to the engine control unit.
- Activate components: Run active tests on the engine control, including direct fuel injection and ignition diagnostics.
- Live monitoring: Track values in real time while the engine is running.
Compatible vehicles and applications
The connector type and power class determine compatibility, not the model name. This cable fits Mercury and Tohatsu outboard motors in the 10–20 hp power class with the 6-pin diagnostic connector. Jaltest Marine covers the models listed below; check under your engine hood to confirm which connector you have.
Mercury:
- 15 FourStroke — control unit ECM by Tohatsu
- 20 FourStroke
- 15 SeaPro
Tohatsu:
- MFS 15 — control unit ECM (Engine Control Module)
- MFS 20
- MFS 9.9
Package contents
- 1x Jaltest (JDC632.9) | Mercury/Tohatsu 6-pin OBD - 26-pin DB26 Adapter Cable | Outboard Motor
Technical specifications
| Specification | Description |
|---|---|
| Brand | Jaltest (Cojali) |
| Reference number | JDC632.9 |
| Type | Adapter cable |
| Application | Mercury and Tohatsu outboard motors, 10-20 hp |
| Engine-side connector | 6-pin OBD |
| Interface-side connector | 26-pin DB26 (SubD-26) |
| Control units | ECM by Tohatsu / ECM (Engine Control Module) |
| Important for Jaltest Link V9 | Catalog note: Marine cables with DB26 connectors require the extension cable JDC100B |
| Category | Outboard Motor (marine) |
| Jaltest module | Jaltest Marine |
| Part of cable set | Not included in a cable set; available separately in the Jaltest catalog |
| Required to use | Jaltest Link with valid software license |

To ensure you always have access to the latest software updates and releases for your Jaltest device, it's important that you register the correct distributor.
Only the authorized distributor can perform new software installations and updates. When you designate us as your distributor, we can handle this for you and guarantee that your device stays current and runs smoothly.
How does it work?
-
Download and complete the change form
You can find the form as a PDF file here. -
Send us the completed form
You can easily do this by email to support@astools.eu. -
We'll take care of the rest
With the form, we can notify Jaltest of the change and officially register you as our customer.






