Ecu Pinout: 1kz

Located on the intake, used to fine-tune fuel density. 5. Essential Swap "Cheat Sheet"

Top Dead Center signal used for injection timing. THW: Coolant temperature sensor signal. PIM: Turbo pressure (Intake Manifold Pressure) signal. 1kz ecu pinout

: Proper wiring for a piggyback ECU can nearly double the factory 1KZ performance. Tuned setups have reached approximately 207 HP and 550 Nm of torque , up from the standard ~70-90 HP. Visual Resources Located on the intake, used to fine-tune fuel density

The 1KZ ECU pinout is the "Rosetta Stone" for your engine swap. Whether you are dealing with a 10-pin, 16-pin, or 22-pin connector, focus first on your , Grounds (E1) , and Spill Valve (SPV) . Once those are established, the engine will breathe life. THW: Coolant temperature sensor signal

| 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) |

Note: Pins 4, 19, 20 may vary by model year and transmission type.

: Indicates no RPM signal is reaching the ECU, often due to a faulty engine revolution sensor. Code 38 (SPV Malfunction) : Signifies a problem in the Spill Control Valve circuit. Wiring Resources