Cojali Jaltest Construction and Off Highway Diagnostic Tool


This multi-brand construction and off-highway diagnostic tool from Cojali is perfect for those of you who work on heavy equipment such as earth moving, generators, and industrial engines. What’s more, this tool comes with all the products, services, and training you can expect from Diesel Laptops. You can read the details on all the exclusive benefits, software, and training you get when you purchase a kit from us, which we call the Diesel Laptops Difference.




Coverage includes all the common and not-so-common equipment you will run across in the off-highway diagnostic world. This covers all brands such as CAT, John Deere, Cummins, MTU, Perkins, Isuzu, Kubota, and many more.

Kit Contents

  • Cojali Jaltest adapter
  • 9pin/OBDII Cable
  • Power Pack
  • Cat 9 pin Cable(JDC505A)
  • Construction Equipment Dealer Level Diagnostics for 12-months
  • DTC Solutions Off-Highway Edition – Another exclusive Diesel Laptops product, this is the only known program that includes repair information for off-highway equipment fault codes. It also includes wiring diagrams, hydraulic schematics, and component locators.
  • Software Training – We offer free online training on software usage and functionality.
  • In-Class Room Training – All purchasers of this kit will receive a free voucher for one of our in-classroom experiences at our Diesel Technician Training Center. These are 1-day classes that are focused on real-world diagnostic training such as electrical and aftertreatment systems.
  • On-Line Training – Your purchase entitles you to one free online training course at Diesel Laptops University. This allows you to take ASE accredited training courses from the comfort of your home or office.
  • 30-Day Money-Back Guarantee – If you aren’t happy with your purchase for any reason, you can return it within the first 30 days for a full refund of your purchase.

Construction Coverage:

  • Astra
  • Atlas
  • Bae Systems
  • Bell
  • Bobcat
  • Bomag
  • Bosch Rexroth
  • Case
  • Caterpillar
  • Cometto
  • CVS Ferrari
  • Demag
  • Deici
  • Doosan
  • Fiat Kobelco
  • Gehl
  • Genie
  • Grove
  • GSS
  • Hamm
  • Hidromek
  • Hitachi
  • Hydrema
  • Hyster
  • Hyundai
  • JCB
  • JLG
  • John Deere
  • Kalmar
  • Kobelco
  • Komatsu
  • Kramer
  • Kubota
  • Kassbohrer Gelandefahrzeug
  • Liebherr
  • Linde
  • Link-Belt
  • Manitou
  • Max Com
  • Mercedes-Benz
  • Merlo
  • Multicar
  • New Holland
  • O&K
  • Oto
  • Perlini
  • Pettibone
  • Prinoth
  • Randon
  • Sandvik
  • Schaffer
  • Sennebogen
  • Sunward
  • Tadano Faun
  • Takeuchi
  • Terberg
  • Terex
  • Textron GSE
  • Tigercat
  • TLD
  • Uro
  • Volvo
  • Wacker Neuson
  • Weidemann
  • XCMG
  • Xtreme
  • Yanmar

Industrial Engine Coverage:

  • Caterpillar
  • Cummins
  • Detroit-MBE
  • Deutz
  • Doosan
  • Hino
  • Isuzu
  • Iveco-FPT
  • JCB
  • John Deere
  • Kohler
  • Kubota
  • Liebherr
  • Man
  • Mercedes-Benz
  • MTU
  • Perkins
  • Scania
  • Sisu
  • Steyr
  • VM Motori
  • Volvo Penta
  • Yanmar

Street Sweeper Coverage:

  • Ash
  • AUSA
  • Bucher
  • Cmar
  • Dulevo
  • Elgin
  • Eurovoirie
  • Hako
  • Johnston
  • Mathieu-yno
  • Piaggio
  • Ravo
  • Schmidt

Frequently Asked Questions

What happens after I’ve had this tool for a year?

This tool will revert to read-only mode unless you purchase an annual support package.

Does all my software stop working?

No, only the Jaltest software. All Diesel Laptops’ exclusive software will continue to function for the life of the laptop.

What if I need some other cables?

We stock all available cables for off-highway engine specifics. Your kit will come with the cables for all commercial trucks and the vast majority of off-highway engines.

Works with Diesel Explorer

This Heavy and Medium Duty Diagnostic Software allows you to…

  • Easily see every DTC
  • Get information on components
  • View live parameters
  • View trip data
  • Generate reports and more!


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