Jaltest (JDC121A9) | Carrier 3-pins OBD - 16-pins OBD2 Adapter Cable | Refrigerated Trailer
Warranty directly via AsTools
Warranty directly via AsTools
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2 years warranty on all products
2 years warranty on all products
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Easy returns
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Professional customer service
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The Jaltest JDC121A9 is the diagnostic cable for the 3-pin connector of Carrier refrigerated units with CAN communication; the cable connects that port to the 16-pin OBD2 input of the Jaltest diagnostic equipment. The 3-pin connector plugs directly into the refrigeration unit at the control module; on the interface side, the cable terminates in the standard 16-pin OBD2 diagnostic connector, rather than directly to the DB26 of the Link as the JDC115.9 does.
With this connection, the Jaltest diagnostic tool reads the refrigeration unit's control module. This gives you access to the refrigerated unit controls MAXIMA/ULTRA and VECTOR, and for the VECTOR 1350 also to maintenance data. Refrigerated units have no mandatory diagnostic connector requirement, so the trailer's model year is not a limiting factor here. The cable falls under Jaltest CV (commercial vehicles).
KEY BENEFITS
IMPORTANT NOTES
Applications and Features
This connection allows you to access and control the Carrier refrigeration unit settings using Jaltest software.
Control units you can access
- Carrier MAXIMA/ULTRA: Refrigeration unit control with fault codes, measurement values and ECU data.
- Carrier VECTOR: Refrigeration unit control with fault codes, measurement values and ECU data.
- Carrier VECTOR 1350: The same refrigeration unit control, supplemented with maintenance data.
What you can do
- Read fault codes: Request the fault memory of the refrigeration unit controller.
- View measurement values: Real-time sensor readings from the refrigeration unit, with an alert when a value goes out of range.
- View maintenance data: Consult the maintenance intervals on the VECTOR 1350 and generate a service report.
Compatible Vehicles and Applications
What matters is the connection on the refrigeration unit, not the trailer brand underneath. This cable is part of the Carrier refrigeration units with CAN communication.
Application:
- Refrigerated trailers and cooling semi-trailers with a Carrier refrigeration unit with 3-pin CAN diagnostic connector
- Vehicle make not required: The cable follows the cooler unit, not the trailer manufacturer
- Year of manufacture not applicable: Refrigerated units have no mandatory diagnostic connection
Package contents
- 1x Jaltest (JDC121A9) | Carrier 3-pin OBD - 16-pin OBD2 Adapter Cable | Refrigerated Trailer
Technical specifications
| Specification | Description |
|---|---|
| Brand | Jaltest (Cojali) |
| Reference number | JDC121A9 |
| Type | Adapter cable |
| Application | Carrier refrigeration units with 3-pin CAN connection |
| Vehicle-side connection | 3-pin OBD |
| Interface-side connection | 16-pin OBD2 |
| Control units | Carrier MAXIMA/ULTRA, VECTOR and VECTOR 1350 (refrigeration unit control) |
| Segment | Refrigerated Trailer |
| Jaltest module | Jaltest CV (commercial vehicles) |
| Part of cable set | Refrigeration unit cable set (29989) |
| 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.






