Jaltest (JDCM850) | Cummins (ECU) 4+50-pins – 16-pins OBD2 Adapter Cable | Commercial Vehicle
Warranty directly via AsTools
Warranty directly via AsTools
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2 years warranty on all products
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\nThe Jaltest JDCM850 is the isolation cable harness for the Cummins ECM CM850. On the ECM side, the corresponding 4+50-pin connector, on the interface side the 16-pin OBD2-connection that allows you to connect the wiring harness to your Jaltest Link connection. The cable harness is included with this ECM type and it is a physical component that we send you.\n
\nThe wiring harness is part of Jaltest Central Services: A service based on pay-per-use, allowing Cojali technicians to perform remote functions that aren't possible with Jaltest or any other universal diagnostic tool, such as reprogramming certain control modules. For Cummins, that's the Cummins ECU calibration update (70810000), for which a minimum of software version 24.1 is required. At Central Services, these cable harnesses are listed under optional cables, with a note that the The ATS department may require you to have such a cable. To take over Central Services, you must Jaltest Link version V7 or newer are; the services are billed with credits (71101082).\n
KEY FEATURES
IMPORTANT NOTES
Applications and Features
The JDCM850 is a connection cable: it links the Cummins ECM CM850 to your diagnostic interface. What you can then perform is part of Jaltest Central Services and runs through Cojali and the ATS team.
What the cable harness is for
- Connection to the control unit: The 4+50-pin connector plugs into the Cummins ECM CM850.
- Connection to the interface: The 16-pin OBD2 side connects to the Jaltest Link.
- Support tool for Central Services: The ATS department may require you to have such a cable on hand.
- One cable per application: This version is designed for the CM850; for a different ECM type, you'll need a different isolation cable harness.
What Jaltest Central Services offers for Cummins
- Remote diagnostics: Technicians from Cojali perform functions that aren't possible with Jaltest or any other universal diagnostic tool, such as reprogramming certain control units.
- Cummins calibration update (70810000): The service that Jaltest provides for Cummins; this requires at least software version 24.1 or later.
- Pay-per-use model: You purchase a service on a case-by-case basis and settle using credits; for Cummins, that's reference 71101082.
- Jaltest Link V7 or newer: With an older interface version, you cannot access Central Services.
- Through Cojali and the ATS team: They will advise whether a service is available upon your request; Cojali reserves the right to change Central Services pricing.
Compatibility
The ECM type is what matters — not the engine series or vehicle brand. This cable harness is designed for the Cummins ECM CM850 with the 4+50-pin connector. Cojali does not provide engine or vehicle coverage documentation for these isolation harnesses: there is no list of engine series or vehicle brands to check whether the harness will work in your situation. Before ordering, verify the ECM type and pin count yourself.
- What matters: The ECM type (Cummins ECM CM850) and the pin count of the ECM connector (4+50-pin).
- What doesn't matter: The engine series, vehicle brand, and model year; these are not documented for this harness.
- You need to check: Read the control unit type from the nameplate and count the connector pins.
- If you're unsure: Provide us with the ECM type and pin count, and we'll help you find the right version.
What's Included
- 1x Jaltest (JDCM850) | Cummins ECM CM850 | Isolation harness, 4+50-pin to 16-pin OBD2
Technical Specifications
| Specification | Description |
|---|---|
| Brand | Jaltest (Cojali) |
| Reference Number | JDCM850 |
| Type | Isolation harness (insulation harness) |
| ECM-side Connection | Cummins 4+50-pin |
| Interface connection side | 16-pin OBD2 |
| Compatible ECM | Cummins ECM CM850 |
| Designed for | Jaltest Central Services — Cummins calibration update (70810000) |
| Requires | Jaltest Link V7 or later; software version 24.1 or higher for the Cummins calibration update |
| Category | Commercial vehicles |
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.
