Navistar Diamond Logic Builder Software Level 1


Diamond Logic Builder Level 1

The basic Navistar Diamond Logic Builder (DLB) software provides the ability to diagnose and simulate features in the Electrical System Controller or Body Controller (ESC/BC) module on the Navistar Trucks.  The ESC/BC receives inputs from driver controls, sensors and switches providing outputs to vehicle loads, gauges, relays and remotely mounted modules. Software to control a vehicle’s specific electrical/electronic features and components is programmed into the ESC/BC using a computer and the Diamond Logic Builder Fleet program.  The DLB allows the mechanics to read and clear body codes, perform diagnostics on the air conditioning system, dash board, instrument panel, lighting system and more.  No longer do you need to work blindly with the new multiplexed systems, as the Diamond Logic Builder lets you diagnose like a professional.  If you need to perform programming, Navistar offers the option of a step up to DLB Level 2.  Feel free to visit our DLB level 2 page.

This software will allow your technicians to perform diagnostics on:

  • A/C System
  • Dashboard / Instrument Panel
  • Wipers
  • Lighting System
  • Etc.
  • Read & Clear Fault Codes
  • View Parameters & Features
  •  Automatic Module Detection
  • View Wire Diagrams
  • View Cluster Configuration
  • View Switch Location
  • Bi-Directional Control
  • Record Snapshots
  • Graph Parameters

In 2001 Navistar Truck and Engine introduced the Industry’s First High Performance Trucks®. With this introduction, a very innovative and flexible electrical system employing multiplexing technology was introduced. The system is standard on all high-performance trucks. In addition, there are many options that can be ordered and/or added to the vehicle in the field.


Manufacturer reserves the right to make changes without prior notice.



About Us

Diesel Diagnostic Equipment was founded in 1999 on the principal of providing quality diagnostic equipment to the professional medium & heavy-duty truck technicians. 


All product and company names/logos are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.