Automatic transmission shift control pins (for models running integrated Engine/A343F Transmission ECUs). Standard 1KZ-TE 3-Plug ECU Pinout Map (Reference)
| Pin Number | Circuit Description | Notes | | :--- | :--- | :--- | | | E/L (Shift Lock) | Electronic Automatic Transmission logic | | 4 | NSW (Neutral Start) | Neutral Safety Switch Input | | 5 | R (Reverse) | Reverse Gear Signal | | 6 | D (Drive) | Drive Gear Signal | | 10 | OD (Overdrive) | Overdrive Switch Input | | 12 | STP (Stop Light) | Brake Pedal Switch Input | | 13 | A/C | Air Conditioner Amplifier Signal (Idle up) |
The Toyota 1KZ-TE is one of the most legendary turbo-diesel engines ever built. However, performing an engine swap or troubleshooting an electrical fault requires a precise understanding of the Engine Control Unit (ECU) pinout. 1kz ecu pinout
Toyota utilized two primary ECU hardware configurations for the 1KZ-TE engine depending on the production year and vehicle model. Identifying your specific plug layout is the first step before cutting or testing any wires. 1. The Early Generation (Pre-2000)
Unlike its mechanical predecessor, the 1KZ-T, the 1KZ-TE relies on an Electronic Control Unit (ECU) to manage fuel injection timing, spill valve control, and turbo boost. When swapping this engine into another chassis or diagnosing a running issue, understanding the ECU pinout is critical. Toyota utilized two primary ECU hardware configurations for
Connect IGSW to trigger an external 4-pin relay. Route the output of this relay directly to pins +B and +B1 .
Note: Pins 4, 19, 20 may vary by model year and transmission type. differences between generations
Because Toyota utilized different ECU plug configurations across various models and production years, wiring errors can lead to limp mode, poor performance, or fried components. This comprehensive guide breaks down the 1KZ-TE ECU pinouts, differences between generations, and essential troubleshooting steps. 1. Understanding 1KZ-TE ECU Generations