Delphi 4J (24V)

New AT Protocol: Delphi 4J (24V Support)!

Dear Users,

An important technical update expanding our commercial vehicle coverage is now live on your equipment! While the Delphi 4J protocol is already supported on your AutoTuner Tool for standard 12V passenger platforms, this update officially introduces full compatibility with 24V vehicle architectures.

Key Highlights & Protocol Requirements:

• In-Vehicle Operation (24V OBD): Connecting directly through the vehicle's diagnostic socket requires our dedicated 24V OBD cable. To ensure complete operational reliability, the AutoTuner application will prompt you to confirm that the connected vehicle is indeed a 24V system before starting communication.
• OBD on Bench: Bench operations remain fully supported using the universal bench cable supplied as standard in your AutoTuner case.

🔌 Hardware for In-Vehicle Connection:
If your workshop does not yet have our dedicated 24V cable for direct truck diagnostics, you can find it on our shop: 👉 AutoTuner 24V OBD Cable

Supported Lineup (Delphi 4J - 3.0 TD 4JJ1 Engine):

• 24V Platforms (New):
  • Isuzu N-Series (2014+)
  • Isuzu ELF (2011+)
• 12V Platforms:
  • Isuzu D-Max / Vcross (2006+)
  • Isuzu MU-X (2013+)
  • Holden Rodeo (2002+)

Update your AutoTuner software today and expand your calibration services across 24V Isuzu commercial trucks!

The AT Team

Key Features

• ⚙️ Type: Engine Control Unit (ECU)
• 🔌 Mode: OBD VR (NR fallback)
• 🧩 Readout: Calibration
• 🖥️ MCU: MPC561
• ⏱️ Write time: 2min
• ✅ Checksums correction