Jaltest Cummins Revision + JDCM2250 — CM2250 ECM Insulation Harness

This is the Cummins CM2250 ECM insulation harness required to perform the Jaltest Cummins Revision Update (Central Services action) on engines running the CM2250 control module. The CM2250 is the Cummins ECM used on ISX15, ISX12, and related engines in the GHG14 (2014–2016 model year) range. This covers a large portion of the current mid-age heavy-duty fleet that has moved into the independent shop market as original warranty periods expire and dealer relationships end.

Jaltest Central Services: Cummins Revision Update

The Jaltest Cummins Revision Update is a Central Services action — a remote, assisted ECM recalibration carried out by Cojali USA's ASE-certified diesel technicians with you connected and the vehicle in the bay. The technician uses Jaltest Diagnostics software to write an updated calibration file directly to the Cummins ECM, addressing factory-released software revisions that can resolve fault codes, improve fuel economy, correct driveability concerns, and restore proper aftertreatment function.

To perform this action, you need two things: an active Jaltest license and the correct insulation harness cable for your specific Cummins ECM family. The cables below are the required harnesses — they provide the proper electrical isolation between the Jaltest interface and the ECM during the programming event, protecting both the ECM and the diagnostic tool.

Central Services Process

• Verify initial conditions in Jaltest Diagnostics software
• Request the Cummins Revision Update through your distributor or Cojali USA directly
• Payment processed (Central Service action: 50)
• Schedule a time — Cojali USA technician connects remotely and carries out the revision
• Your ECM receives the latest factory calibration; faults are cleared

Important: Each cable below includes one FREE Cummins Central Services action as part of the Jaltest Central Services Cables Promotion. The 85 cable price effectively bundles the cable and your first revision action together, making the cable itself nearly cost-neutral for a shop that intends to perform even one Cummins revision.

JDCM2250 Cable Specifics

• Compatible ECM family: Cummins CM2250 control module
• Applicable engines: Cummins ISX15, ISX12, and related engines with CM2250 ECM (approximately 2014–2016 production, GHG14)
• Function: Insulation harness providing proper electrical isolation during Cummins ECM programming events via Jaltest Central Services
• Required for: Jaltest Cummins Revision Update (Central Services action, part number 70810000)
• Includes one free Central Services action — per the Jaltest Central Services Cables Promotion, purchase of this harness includes one complimentary Cummins Revision Update (Detroit Diesel actions excluded from this offer)
• Compatible with Jaltest Link V9 — use with an active Jaltest CV license and the Jaltest Link V9 interface
• Cojali USA part number: 78901066 / JDCM2250

Who Needs This Cable

Shops servicing GHG14-era Cummins-powered Class 8 trucks from model years 2014–2016. The CM2250 platform covers ISX15 and ISX12 engines across Peterbilt, Kenworth, Freightliner, Volvo, Mack, and International applications. SCR system calibration updates, aftertreatment fault resolution, and fueling strategy corrections via Cummins Revision are all performed with this harness connected. For a shop doing regular Cummins ISX15 work on 2014–2016 trucks, the JDCM2250 is an essential addition to the bench.

Why Buy From OEM Diagnostic Tools?

OEM Diagnostic Tools has specialized in professional diagnostic equipment since 2016. We stock the complete Jaltest cable library including all Cummins Central Services harnesses. Free shipping on every order, free tech support at 866-217-0063 from people who understand the Central Services workflow, full warranty, and honest guidance on which Cummins harness matches the ECM in your customer's truck.

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