Cummins ECM CM2250 Insulation harness

Jaltest JDCM217.9 - Cummins ECM CM2250 Insulation Harness

The JDCM217.9 (Cojali part number 78901067) is the Cummins CM2250 ECM insulation harness required to perform the Jaltest Central Services Cummins Revision Update on engines equipped with the CM2250 engine control module. The CM2250 ECM is found in later ISX15 and certain ISM engines in the EPA 2010 era. If that is your application, this is the correct harness for performing ECM calibration updates through Jaltest Central Services.

What the Cummins Revision Update Does

The Jaltest Central Services Cummins Revision Update (part #70810000, $250.00 per action) allows shops to perform OEM-level Cummins ECM calibration updates with Cojali remote technician support. The JDCM217.9 harness is placed on the CM2250 ECM during this procedure. Process:

1. Verify initial conditions through Jaltest Diagnostics software
2. Request the service through Cojali USA or your distributor
3. Payment is processed
4. Schedule the action — Cojali customer support carries out the update remotely

Harness Specifications

• SKU: JDCM217.9
• Cojali Part Number: 78901067
• Application: Cummins ECM CM2250
• Function: Insulation harness for ECM update procedure
• Required For: Jaltest Central Services Cummins Revision Update (action #70810000)
• Also Requires: Active Jaltest CV license and Jaltest Link V9
• MSRP: $285.00

Free Central Services Action With Purchase

Per the 2025 Jaltest Pricelist: purchasing the JDCM217.9 includes one free Cummins Central Services Revision Update action (valued at $250.00 — Detroit Diesel actions excluded). Your first ECM update is effectively covered when you add this harness to your shop.

Cummins ECM Platform Reference

• JDCM2150 (78901065, $285) — Cummins ECM CM2150
• JDCM217.9 (78901067, $285) — Cummins ECM CM2250
• JDCM2250 (78901066, $285) — Cummins ECM CM2350 / CM2450
• JDCM850 (78901064, $285) — Cummins ECM CM850

Not sure which ECM your Cummins engine uses? Call us — we can help you identify the correct harness before you order.

Who Needs This Harness

Truck and fleet shops servicing Cummins ISX15 or ISM engines with CM2250 ECMs who want to perform ECM calibration updates through Jaltest Central Services in-house rather than going to a Cummins dealer.

Why Buy From OEM Diagnostic Tools?

OEM Diagnostic Tools has specialized in professional diagnostic equipment since 2016. We carry all four Cummins ECM harnesses, ship free on every order, and provide free tech support at 866-217-0063. We can help identify the right harness and walk you through the Central Services process. Full warranty.

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