On later 1KZ-TE (1996+, especially KZJ95), Pins C9 and C11 work together. If swapping this engine into an older vehicle, you must bypass or delete the immobilizer or provide the correct transponder signal.
| Pin | Wire Color | Sensor | Signal (Key ON) | |------|-------------|---------------------------|------------------| | B1 | Red/Blue | Crankshaft position (NE) | AC 0.5-1.0V (cranking) | | B2 | White/Blue | Camshaft position (G signal) | AC 0.5-1.0V | | B4 | Yellow/Green | Throttle position sensor (VTA) | 0.5V idle – 4.5V WOT | | B6 | Brown/White | Engine coolant temp (THW) | 2.5V cold – 0.2V hot | | B7 | Green/Black | Intake air temp (THA) | 3.0V cold – 1.0V hot | | B9 | Pink/Blue | Boost pressure sensor (PIM) | 1.0V at 0 psi – 3.5V at 15 psi | | B13 | Violet/White | Vehicle speed sensor (SPD) | 0-5V pulse (AC) | | B18 | Blue/Yellow | Neutral start switch (NSW) | 0V in Park/Neutral; 12V in gear | | B20 | Gray | EGR lift sensor | 0.5-4.5V |
Understanding the pinout is vital for diagnosing problems, especially those related to the ECU itself. 1kz ecu pinout
This connector aggregates the analog and digital signals from the engine block, intake tract, and pedal assembly to let the ECU calculate engine load. Pin Number Terminal Label Description / Function Wire Color (Typical) VCC +5V Sensor Power Supply (To TPS and Map Sensor) Blue / Yellow C2 VTA Throttle Position Sensor (TPS) Signal Yellow / Green C3 PIM Intake Manifold Pressure Sensor (Turbo MAP Sensor) Yellow / Black C4 THW Water (Coolant) Temperature Sensor Green / White C5 THA Intake Air Temperature Sensor Yellow / Red C11 NE+ Crankshaft / Engine Speed Position Sensor (+) C12 NE- Crankshaft / Engine Speed Position Sensor (-) C19 E2 Sensor Ground Circuit Brown / Black 3. Critical Wire Functions Explained
Note: Please verify wire colors with your specific year model. Toyota sometimes changed wire colors between production years. On later 1KZ-TE (1996+, especially KZJ95), Pins C9
These are the crank and revolution signals. Without these inputs (Pins
The 1KZ-TE ECU depends on several critical signals to manage fuel injection timing and volume. Key terminals found across common variants include: Power & Ground BATT (A-2) : Always hot (9–14V) to maintain ECU memory. +B / +BF (A-7, A-1) This connector aggregates the analog and digital signals
model (starting around August 1993), the ECU typically features a three-connector setup often designated as connectors A, B, and C. Core ECU Terminal Configuration