1kz Ecu Pinout _verified_ Jun 2026

models. For model-specific diagrams, resources like the HD Automotive Blog provide dedicated pinout layouts for the Hilux Surf KZN185.

Always confirm pin position by number, not color alone. The pinout’s position is consistent; the wire color is a guide.

Reset the ECU: Remove the 15A EFI fuse for 30 seconds or disconnect battery negative. 1kz ecu pinout

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.

| Pin | Wire Color | Signal | Description | |-----|------------|--------|--------------| | B1 | B-W | M-REL | Main relay control (ECU triggers relay) | | B2 | L | FAN | Radiator fan relay control | | B3 | G-R | EGR | EGR vacuum switching valve (VSV) | | B4 | R | VSV1 | Fuel pressure VSV (spill control valve) | | B5 | B-Y | VCV | Spill control valve (fuel pump) | | B6 | L-R | TCV | Timing control valve (injection timing) | | B7 | Y | EDU | Injector driver ground (to EDU – early models) | | B8 | W | EDU+ | Injector driver power (to EDU) | | B9 | B-O | ELS | Electrical load signal (from alternator) | | B10 | G | SPD | Vehicle speed sensor (from combination meter) | | B11 | W-B | W | Check engine light (warning lamp) | | B12 | R-B | TACH | Tachometer output | | B13 | G-B | FPR | Fuel pump relay (lift pump – some models) | | B14 | L-B | STP | Stop light switch (brake input) | | B15 | R-W | +BM | Backup power for ECU memory (constant +12V) | | B16 | B | E01 | Power ground (injector driver) | models

For a standard 1KZ-TE swap or troubleshooting, you'll generally look for these primary connections:

Installing standalone management systems like Link or Haltech. The pinout’s position is consistent; the wire color

If you need the pinout for a (e.g., KZJ95, KZH106, or Hiace LH112), mention the model and year – Toyota changed pin assignments between markets and body styles.

The 1KZ-TE ECU is the brain of the engine. Unlike the earlier mechanical 1KZ-T, the "E" stands for Electronic, meaning it manages fuel injection, turbocharger operation, glow plugs, and various sensors to optimize performance and emissions. Understanding the pinout is critical for:

Intake Manifold Pressure Sensor signal (MAP sensor). Measures turbo boost pressure.