| Pin | Wire Color | Signal Name | Function | Voltage / Signal | | :--- | :--- | :--- | :--- | :--- | | | Red/Blue | VTA1 | Throttle Position Sensor (TPS) Signal | 0.5V (Idle) – 4.5V (WOT) | | B2 | Black | E2 | TPS Sensor Ground | 0V | | B3 | Red/Yellow | VC | TPS Reference Voltage (5V output from ECU) | 5V | | B4 | N/A | N/C | Not Connected | - | | B5 | Green/White | THW | Engine Coolant Temp (ECT) Signal | 2.5V (Cold) → 0.3V (Hot) | | B6 | Red/Black | THA | Intake Air Temp (IAT) Signal | 3.0V (Cold) → 1.0V (Hot) | | B7 | Shield | E1 | Sensor Shield Ground (Crank/Cam signals) | 0V | | B8 | White | G2 | Crank Position Sensor – G2 (Ne/Ne+) | AC sine wave (1-5V during crank) | | B9 | Black | G- | Crank Position Sensor – G- (Ne-) | AC sine wave (inverse of G2) | | B10 | N/A | N/C | Not Connected | - | | B11 | N/A | N/C | Not Connected | - | | B12 | Yellow | STA | Starter Signal (crank sense) | 12V (While cranking only) | | B13 | Black/White | NSW | Neutral Start Switch (P/N signal) | 0V (In gear) / 12V (Park/Neutral) | | B14 | Brown/White | A/C1 | AC Switch Signal (to ECU) | 12V (AC ON) | | B15 | N/A | N/C | Not Connected | - | | B16 | Blue | SPD | Vehicle Speed Sensor (VSS) | Pulse (0-12V square wave) | | B17 | Black | E2 | Sensor Common Ground | 0V | | B18 | White/Green | G1 | Cam Position Sensor (G1 – Cylinder 1 TDC) | AC sine wave | | B19 | Red | G2e | Cam Position Sensor (G2 – Cylinder 4 TDC) | AC sine wave | | B20 | N/A | N/C | Not Connected | - | | B21 | N/A | N/C | Not Connected | - | | B22 | Light Green/Red | A/C2 | AC Compressor Clutch Feedback | 12V (Clutch engaged) |
The Ultimate Guide to the 1KZ-TE ECU Pinout: Wiring, Diagnostics, and Tuning
Often feature a updated plug style or a 4-plug configuration to accommodate additional sensors like the Intercooler Temperature Sensor and digital dashboard communications. 2. 1KZ-TE ECU Pinout Configurations
: If you pulled your engine from a Toyota Hiace or Granvia (KCH10, KCH16), the ECU likely has a different pin layout using 26-pin, 16-pin, and 12-pin connectors. 1kz ecu pinout
: This is the "Electronic" version. While it is often described as "old school," its engine management system is relatively sophisticated. It features an electronic injection pump controlled by the ECU via a Spill Control Valve (SPV) and various sensors. The "E" makes all the difference. This version requires a fully intact engine harness, a functioning ECU, and a correct wiring configuration to run. Most of the pinout discussions revolve around this specific variant.
The SPV is a high-frequency solenoid located on top of the injection pump. It cuts off high-pressure fuel delivery to regulate exactly how much fuel enters the cylinders.
: If the engine cranks but does not start and the Check Engine light does not illuminate when the key is turned to "ON", the ECU is likely not receiving power. Check the +B (EFI relay power) and BATT (constant power) pins for 12V using a multimeter. | Pin | Wire Color | Signal Name
Main ground wires. E01 and E02 are heavy-duty grounds for high-current drivers like the spill control valve. They must tie directly to the engine block. 2. Electronic Fuel Injection Controls
: Main battery power and switched power feeds.
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Count the flashes of the on your dash to determine your error codes (e.g., Code 14 for timing control, Code 15 for spill control valve).
To successfully wire or troubleshoot the ECU, you must understand the key components: