1kz: Ecu Pinout
Water Temperature Sensor (ECT) signal. Adjusts cold start fueling and glow plug duration. THA: Intake Air Temperature (IAT) sensor signal. Auxiliary & Chassis Inputs
| 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) |
Unplug the SCV. The engine should default to a high idle (limp mode). If it dies instantly, your SCV wiring is shorted. 1kz ecu pinout
The following table compiles many of the key signals and their associated ECU pins, based on available technical resources. This information can serve as a powerful diagnostic tool or a starting point for your project.
These pins are critical for powering up the ECU. If the ECU lacks power, your glow plug light will not illuminate on the dash, and the engine will crank but never start. Water Temperature Sensor (ECT) signal
Many DIYers forget that the Spill Valve requires a dedicated relay. If the ECU doesn't see the "M-REL" signal to trigger the relay, the engine will crank but never start.
Post-1998 ECUs may include an immobilizer (Code 99) or EGR valve lift sensors (Code 96) not present on early JDM engines Further Exploration Access a full visual diagram of the 1KZ-TE ECU Pinout and Wiring Guide on Scribd. Review detailed Engine Control Wiring Diagrams specifically for the Land Cruiser Prado. Read a community discussion on deciphering Hilux ECU connectors for the KZN165 series. Are you doing an engine swap or diagnosing a issue? Knowing the specific year and vehicle model can help narrow down the exact connector layout you need. Motor Toyota 1KZ: Rendimiento y Aplicaciones Auxiliary & Chassis Inputs | Pin Number |
Generation 2: Electronic Throttle / Intercooled (4-Plug ECU) Roughly 2000–2006
Glow plug relay control and dash indicator light output.
Primary engine sensors and actuator outputs.
Let’s apply the pinout. Your Land Cruiser Prado cranks but doesn’t start. Follow this logical flow: