Jaltest (JDC112A) | 7+7-pins (PLC) J2497 - 9-pins Deutsch Adapter | 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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\nThe Jaltest JDC112A is the orange T-connector that in the 7-pin connection between towing vehicle and trailer. One arm carries a plug with seven brass pins, the other arm the corresponding 7-pin connector, and on the side there is JDC 112Ain moulded plastic. At right angles to this is a black block with a short cable running from it to a roundblack 9-pin Deutsch connectorwith abayonet collar, of which four of the nine positions are occupied. That free end is therefore not a 16-pin OBD2.\n
\nOn the 9-pin Deutsch connector, you connect your own 9-pin Deutsch diagnostic cable to the interface; in the product photo that is the version with the green coupling ring. This brings the equipment to PLC communication to SAE J2497 standard: The trailer then does not transmit its diagnostic data via a separate data bus, but over the power supply line of the lighting, the way trailer braking systems particularly in North Americareaches trailers without their own CAN diagnostic connection. The adapter is rated for theJaltest Link V8.1 and V9 and falls under Jaltest CV (commercial vehicles).\n
KEY BENEFITS
IMPORTANT NOTES
Applications and functionality
Via the PLC line you read out trailer systems that transmit their data over the power supply line. Which units these are varies by trailer and by chassis manufacturer. The list below covers the systems connected to that line.
Control units you can access
- Control units on the PLC line: Via the 7-pin connection, Jaltest communicates with trailer systems that transmit their data over the power line, including on semi-trailers without a dedicated CAN diagnostic connector.
- Varies by trailer: Which control units are present is determined by the semi-trailer, not by this adapter.
What you can do
- Read and clear fault codes: Access the fault memory of connected control units and clear it after repair.
- View live data: Monitor current sensor and system values in real time.
- Activate components: Trigger actuators to verify their operation.
- Parameters, calibrations and service resets: Where Jaltest offers these for the relevant system.
Compatible vehicles and applications
Communication method is what matters, not the manufacturer. This adapter connects to the 7-pin connection carrying PLC according to SAE J2497. This connection is located at the coupling between towing vehicle and trailer, and the adapter sits in between with its orange T-housing.
Application:
- Semi-trailers and trailers with PLC communication according to SAE J2497
- All chassis manufacturers using this communication method
- Year of manufacture is not a factor: Trailers are not subject to OBD requirements, so the connection remains in use on new semi-trailers
Package contents
- 1x Jaltest (JDC112A) | 7+7-pins (PLC) J2497 - 9-pins Deutsch Adapter | Trailer
Technical specifications
| Specification | Description |
|---|---|
| Brand | Jaltest (Cojali) |
| Reference number | JDC112A |
| Type | Adapter cable (PLC adapter) |
| Application | Trailer diagnostics via PLC communication (SAE J2497) |
| Vehicle-side connection | 7+7-pin: Orange T-connector with seven brass pins on one arm and 7-pin socket on the other |
| Interface-side connection | 9-pin Deutsch, black with bayonet coupling; four of the nine positions populated |
| Dimensions | 18.2 x 26 cm |
| Interface | Jaltest Link V8.1 and V9 |
| Control units | Trailer systems on the PLC line; availability varies by semi-trailer |
| Segment | Trailer |
| Jaltest module | Jaltest CV (commercial vehicles) |
| Additional requirement | A 9-pin Deutsch diagnostic cable between this adapter and the interface |

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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.






