Cummins ECM CM2350 Insulation harness

Jaltest JDCM2250 - Cummins ECM CM2350/CM2450 Insulation Harness

The JDCM2250 (Cojali part number 78901066) is the Cummins CM2350 and CM2450 ECM insulation harness required for the Jaltest Central Services Cummins Revision Update procedure. The CM2350 and CM2450 are the current-generation Cummins control modules found in ISX15, X15, ISB6.7, ISL9, and other modern Cummins engines. If you are servicing late-model Cummins-powered heavy trucks and want to perform ECM calibration updates through Jaltest Central Services, this is the harness you need.

What the Cummins Revision Update Does

The Jaltest Central Services Cummins Revision Update (part #70810000, $250.00 per action) enables shops to perform OEM Cummins ECM calibration updates with remote support from Cojali US-based ASE-certified diesel technicians. The JDCM2250 harness is used on the CM2350 or CM2450 ECM during the update procedure. Steps:

1. Verify initial conditions through Jaltest software
2. Request the Central Services action through Cojali USA or your distributor
3. Payment processed
4. Schedule — Cojali technician performs the remote update

Harness Specifications

• SKU: JDCM2250
• Cojali Part Number: 78901066
• Application: Cummins ECM CM2350 and CM2450
• 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 JDCM2250 includes one free Cummins Central Services Revision Update action (valued at $250.00 — Detroit Diesel actions excluded). Your first ECM update is effectively included with the harness purchase.

Cummins ECM Platform Reference

• JDCM2150 (78901065, $285) — Cummins ECM CM2150
• JDCM217.9 (78901067, $285) — Cummins ECM CM2250
• JDCM2250 (78901066, $285) — Cummins ECM CM2350 / CM2450 — current-gen ISX15, X15, ISB6.7, ISL9
• JDCM850 (78901064, $285) — Cummins ECM CM850

The CM2350 and CM2450 cover the broadest range of currently-in-service Cummins engines. For most heavy truck shops, this is the most commonly-needed Cummins harness.

Who Needs This Harness

Heavy truck shops and fleets servicing modern Cummins-powered vehicles with CM2350 or CM2450 ECMs who want to perform ECM calibration updates in-house through Jaltest Central Services.

Why Buy From OEM Diagnostic Tools?

OEM Diagnostic Tools has specialized in professional diagnostic equipment since 2016. We carry all four Cummins ECM harnesses and the full Jaltest diagnostic lineup. Free shipping. Free tech support at 866-217-0063 — call us to confirm which ECM your engine uses. Full warranty.

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