1kz Ecu Pinout Jun 2026
However, when these engines age or are swapped into other vehicles (like a Land Rover Defender or an older Toyota pickup), the Electronic Control Unit (ECU) becomes the central puzzle. Without a correct , you cannot diagnose a crank/no-start condition, rewire a standalone harness, or even test sensors with a multimeter.
1KZ-TE ECU Pinout and Wiring Guide | PDF | Throttle - Scribd 1kz ecu pinout
If you want, tell me the ECU part number or post a clear photo of the ECU connector(s) and connector labeling and I’ll produce a verified pin-to-wire mapping specific to that unit. However, when these engines age or are swapped
| Pin | Wire Color | Signal Name | Function | Voltage / Signal | | :--- | :--- | :--- | :--- | :--- | | | Light Green/Yellow | GLOW | Glow Plug Control Relay | 12V (Activates relay) | | C2 | Green/Black | EGR | EGR Vacuum Switching Valve (VSV) | 12V (Solenoid on) | | C3 | Yellow/Black | TACH | Tachometer Output (RPM signal) | Pulse (7V average at idle) | | C4 | Pink | W | Check Engine Light (CEL/MIL) | 0V (Off) / 12V (On) | | C5 | White/Black | TC | Diagnostic Port – TC (Data Link) | 5V (Pull-up) | | C6 | Violet | TE1 | Diagnostic Port – TE1 (Service mode) | 0V (Normal) / 5V (Diag) | | C7 | N/A | N/C | Not Connected | - | | C8 | Black/White | E1 | Digital Ground | 0V | | C9 | N/A | N/C | Not Connected | - | | C10 | N/A | N/C | Not Connected | - | | C11 | Red/Black | FC | Fuel Cut Solenoid (EDU alternative) | 12V (Run) | | C12 | Blue | A/T | Automatic Transmission Lock-up solenoid | 12V (Locked) | | C13 | N/A | N/C | Not Connected | - | | C14 | N/A | N/C | Not Connected | - | | C15 | N/A | N/C | Not Connected | - | | C16 | Green/Orange | OD1 | Overdrive Switch Signal | 0V (OD Off) / 12V (OD On) | | C17 | N/A | N/C | Not Connected | - | | C18 | N/A | N/C | Not Connected | - | | C19 | Red/White | +BM | Backup Power for Diagnostic memory | 12V (Constant) | | C20 | White/Black | SIL | Serial Communication (OBD / Lexus tester) | Data stream (0-12V) | | C21 | N/A | N/C | Not Connected | - | | C22 | Pink/Black | A/T2 | Automatic Transmission – Pattern select | 0V (Power) / 12V (Comfort) | | Pin | Wire Color | Signal Name