PSI Software Download Resource Center

Essential diagnostic and programming tools for PSI engines

PSI Software Download Resource Center

Most Popular 4G Display Diagnostic Software

4G Display v661B

Diagnostic software for PSI Industrial and Power Systems Engines using 4G ECM Hardware. This is the primary tool for troubleshooting and monitoring PSI engine systems.

⬇ Download 4G Display (Latest Version)
⚠️ IMPORTANT: Certain Weichai encrypted ECMs require 4G Display version 608A or older. Download the 608A Legacy Version if you are having connection issues with Weichai encrypted ECMs. See PSI Knowledge article PSIKO25009

Additional Resources:

GCP Display Diagnostic Software

GCP Display v269

Diagnostic software for PSI Industrial Engines using GCP ECM Hardware. Essential for monitoring and troubleshooting GCP based engine systems.

⬇ Download GCP Display (Latest Version)

🔋 Lithium Ion Battery Management

iBMS Software v3.0.8

Battery Management System software used to connect to and monitor PSI Lithium Ion Battery products. Essential for battery diagnostics, downloading log files, and more.

⬇ Download iBMS Software

Other Software Downloads

PSI Display (Legacy)

Diagnostic software for older (non 4G or GCP) PSI engine control systems. Use this software for legacy PSI engine platforms.

⬇ Download

ECOM Driver

Required driver for ECM communication. Already included in the main diagnostic software packages (4G, GCP, PSI Display).

⬇ Download Driver Only

LCI Display Software

For older PSI engine control systems (pre 2015). Use only if working on LCI specific platforms.

⬇ Download

PSI Field Programmer

Cloud based programming software used to update calibrations on certain PSI engines in the field.

⬇ Download 📺 Training Video

Installation Guide

📺 How to Install PSI Diagnostic Software

Step by step installation guide for 4G Display and other diagnostic tools

💡 Tip: Watch this video before installing to avoid common issues.

Need help Contact PSI Technical Support: service@psiengines.com | 1 888 331 5769

4G EDIS Passwords are shown below. These technician-level passwords will allow you to connect to the engine ECM in view-only mode.

PSI Encrypted ECMs
1BZI-2TOY-EKHF-CHCK
DXNGNCZMKTKNE-FMO1N5JEHEBIU
NQUX-VK2M-FF3K-XDCJ
NVWW-ZKMN-NVWK-TDIN
WAC Encryption ECMs
RBK2-N4KI-JXDO-KDBF
AI4DGYWO4LCRR-5GCBJQNKGLK0M

Character Key

  • 1 - Number One
  • I - Uppercase letter I
  • l - Lowercase letter L
  • O - Uppercase letter O
  • 0 - Number Zero

Diagnostic Software Support

Frequently Asked Questions

You will need an ECOM or ECOM 2 Cable

ECOM Cable part number is z101554

Purchase the ECOM cable from our parts team at parts@psiengines.com or 888-331-5769

Yes, you will need a driver for the diagnostic software.  Luckly, the “ECOM Driver” is contained within the software download .zip folders linked above.  Take a look!

Take a look at the video above for step by step guidance on the installation.

This can occur for several reasons.   See below for the most likely causes.

  1. You are using the incorrect software for the ECM hardware.  Check the white label on the ECM, does it say GCP or 4G?
  2. You are using the incorrect password.
  3. You did not insall the ECOM Driver.
  4. Your engine ECM is not powered  up.

Yes, we offer multiple types of training solutions.  Take a look at our training page as a starting point!