FZJ105 Plug & Play ECU Adapter — 1998–2002

NOTICE — PRODUCT AVAILABILITY

Most DJT-Performance products are made to order. For current lead times, product availability and stock updates, please contact us directly before ordering.

Modern Engine Management Without Replacing Your Factory Harness

Upgrade your 1FZ-FE-powered LandCruiser to compatible Haltech engine management without replacing the original Toyota engine harness. The DJT-Performance Plug & Play ECU Adapter provides a purpose-built interface between your factory wiring and an aftermarket ECU, simplifying installation while supporting the vehicle functions needed for a practical street or off-road build.

Whether you're running a naturally aspirated setup or planning a turbocharged conversion, the adapter provides a foundation for advanced tuning, protection strategies and future expansion.

KEY FEATURES

• Plug & Play Installation — Designed to connect a compatible Haltech ECU to the factory engine wiring.
• Factory Function Integration — Retains supported functions such as air conditioning, cruise control and fuel tank switching, depending on the selected ECU.
• Automatic Transmission Options — A442F-compatible variants provide shift and solenoid control with associated gear-position inputs.
• Gear Display Provision — PRND2L inputs allow integration with a suitable digital dash on automatic variants.
• Future Expansion — Spares connector provisions for extra sensors, ignition upgrades, boost control and custom wiring.
• Purpose Built Construction — Tefzel wire, genuine TE and Deutsch connectors, felt tape and sealed crimp junctions.

VEHICLE COMPATIBILITY

• Vehicle: Toyota LandCruiser FZJ105
• Production: 1998–2002
• Engine: 1FZ-FE 4.5L petrol
• Market: Australia / New Zealand
• Transmission: H151 manual or A442F automatic, as selected
• ECU compatibility varies by the option selected at checkout.

WHAT'S IN THE BOX?

• DJT-Performance ECU adapter harness
• Spares / expansion connector kit
• Online installation and setup guide
• Downloadable base maps

TECHNICAL INFORMATION

The factory wiring supports semi-sequential injection and wasted-spark ignition in the standard adapter arrangement. Full sequential conversions require additional custom wiring. A boost-control PWM output is made available through repurposed wiring at a redundant connector near the original airbox; the solenoid requires an appropriate separately supplied power feed and installer verification of the pinout.

IMPORTANT INFORMATION

• Haltech ECU is sold separately.
• A Haltech signal converter is required for specified automatic configurations, except where a compatible Nexus ECU arrangement eliminates that requirement; check the chosen ECU documentation.
• The original Toyota immobiliser coding is not retained.
• A wideband oxygen sensor arrangement must be installed: the vehicle does not have a factory oxygen sensor in the configuration described by DJT.
• The factory MAP sensor is not suitable for turbocharged operation; choose an appropriate replacement or compatible ECU internal MAP sensor.
• Some ECU selections may not retain the factory 2nd Start and PWR switch functions.
• Initial ECU configuration and professional dyno tuning are required. Base maps must not be treated as finished tunes.

INSTALLATION INSTRUCTIONS & DOWNLOADS

For the latest available installation instructions, wiring diagrams, ECU base maps and other downloadable product resources, visit the DJT-Performance Google Drive folder:

DJT-Performance — Instructions & Downloads

https://drive.google.com/drive/folders/1a2vlae0R9GIAwLrqqli0zkl1xKvdEyOA?usp=drive_link

Please check for the latest applicable files before installation. Resources vary by product.