Navistar Engine Diagnostics (NEDS): Install, Activate, Connect, and Start Diagnosing

If you need to diagnose or program International / Navistar engines, NED (Navistar Engine Diagnostics) is the factory tool you’ll use.

Step-By-Step Install Guide: Download Here
Software Download Link: Download Here

What NED Can Do

According to the software capabilities section, NED supports:

  • Control system monitoring
  • View, record, save, and play snapshots
  • View & clear DTCs, including freeze frame data
  • HD-OBD monitors
  • Service Bay Tests
  • Actuator tests
  • Sensor intermittent fault detection
  • Cold Start Test
  • Air Management Test
  • Cylinder Cutout Test
  • Fan test (if equipped)
  • High-pressure pump test
  • Aftertreatment tests
  • Sensor calibrations
  • Part/service resets
  • Programmable parameters & feature settings

This is Navistar’s top-level diagnostic application for engines from MaxxForce, N-Series, N13, N9/N10, A26, and more.

System Requirements (PC)

  • Windows Vista, 7, or 10 (64-bit recommended)
  • 1 GHz Intel Core 2 Duo / AMD Athlon X2 or better
  • 2 GB RAM (32-bit) or 4 GB RAM (64-bit)
  • 300 MB free disk space
  • Internet required for updates
  • Display: 1024×768 or better
  • RP1210A-compatible adapter (J1708/J1939). We recommend the Nexiq USB Link 3.

Install NED

  1. Download the installer. This was provided in the email you received with your registration information.
  2. Run Navistar Engine Diagnostics Setup.exe.
  3. Click Next → Accept the License Agreement → Install.
  4. Check the box Run Navistar Engine Diagnostics → Finish.

Enter Product Key & Register

  • When NED launches for the first time, enter the product key.
  • If valid, choose Existing User = Yes or No.
  • If you're a new user:
    • Complete the registration window.
    • Wait for the confirmation email.
    • Follow instructions to create your password.
  • Log in via the User Authentication window.

Firewall Requirements (Critical)

Allow outbound access to:

  • *.navistar.com
  • *.internationaldelivers.com
  • *.amazonaws.com
  • *.cloudfront.net

If these are blocked, NED will not activate and will stop working after 30 days.

Launching NED

  • Desktop icon
  • Start Menu
  • Right-click → Open

You will always see the User Authentication Window on launch.

Default Session View (What You See First)

Vehicle Information Pane

Shows:

  • Engine Type
  • Software ID
  • VIN
  • ESN
  • Transmission
  • Engine Hours
  • Total Miles/Fuel

2. Session Tabs

Includes:

  • Connection
  • Vehicle Status
  • Pressure
  • Position/Percent
  • Temperature
  • Voltage
  • Switches
  • SART (if equipped)

3. DTC Panel

View & clear:

  • Active
  • Previously Active
  • Pending
  • Freeze Frame

Connecting to an Engine

  1. Log into NED.
  2. Connect RP1210 adapter → vehicle → Key ON Engine OFF.
  3. If not auto-selected:
    Connection → Select Com Link
  4. Click the COM Link button to start probing.
  5. When connected, the indicator turns green.

NED will identify:

  • Supported engine (full features)
  • Unknown engine (DTC-only mode)

Simulation Mode

View parameters, tests, and signals for training without a truck connected.

Menu:
Connection → Select Engine → Simulate Non Connected Engine

Using the Quick Access Bar

Includes icons for:

  1. COM Link Activate/Deactivate
  2. Trigger Arm/Disarm
  3. Record Session
  4. Record All
  5. Default Session
  6. Programming Session
  7. Signals Session
  8. Stop Tests

Using the Menu Bar

File Menu

  • Export Parameters
  • Create/Open Template
  • Vehicle/Trip/Event Reports
  • Exit

Connection Menu

  • Select COM Link
  • Select Engine
  • Simulation Mode

Snapshot Menu

  • Start/Stop Recording
  • Sample Rate
  • Trigger Setup
  • Playback

Sessions Menu

Predefined sessions:

  • Default
  • Programming
  • Signals
  • HD-OBD Monitors
  • Hard Start/No Start
  • Performance

Tests & Procedures

  • KOEO
  • KOER
  • Aftertreatment Tests
  • Aftertreatment Procedures

Tools Menu

  • Metric/English
  • Clear Statistics
  • Session Tools (Create, Save, Load)

Working With DTCs

NED shows:

  • SPN (Suspect Parameter Number)
  • FMI (Failure Mode Indicator)
  • Pre-2010 “DTC number”

DTC Types:

  • Active
  • Previously Active
  • Healing (pre-2016 only)
  • Pending

Freeze Frame Data

Click Open next to fault.

Clear DTCs

Key ON Engine OFF

  • Click Clear DTCs.
  • Select modules (if viewing all).

Text extracted from DTC panel:

  • DTC column
  • SPN column
  • FMI column
  • Type column (Active / Previously Active / Pending)
  • Show All Modules button
  • Clear DTCs button

Snapshots (Recording & Playback)

  • Use Record Session or Record All
  • Set sample interval.
  • Save automatically to the Snapshots folder on desktop.
  • Playback includes graphs and selectable signals.

Parameters & Programming

Viewing Parameters

Go to:
Sessions → Programming

Access Levels

Levels include: Software, Engineering, Programming, Customer Password, Dealer, Fleet, Available.

Editing & Programming

  1. Click Value.
  2. Enter New Value.
  3. Press Enter.
  4. Click Program Engine.

Customer Password

8-character password → Program Engine.

Exporting Parameters

File → Export Parameters
Recommends VIN + date naming.

Templates

  • Create templates for PTO settings, road/cruise speeds, shift settings, service intervals.
  • Load templates and program multiple trucks quickly.
  • Lock templates.
  • Templates are .template files.

Reports

Activity Trip Report

Available for:

  • MaxxForce 11/13 (2010–2013)
  • N13 SCR (2013–2017)
  • International A26 (2017– )

Vehicle Event Report

Vehicle Report

Event Data Recorder

All can be printed or saved as PDF.