and Yaris. It primarily covers the 4-connector PCM (Powertrain Control Module) system. Review: 2NZ-FE ECU Pinout PDF
| Function | Typical Pin Description | Importance | | :--- | :--- | :--- | | | Often Pin 1 or dedicated power pin | Supplies constant 12V to keep ECU memory alive. | | Ignition Switch (IGSW) | Dedicated switched 12V | Wakes the ECU when the key is turned on. | | Ground (E1/E2) | Case ground/Pin ground | Essential for sensor return paths and ECU operation. | | Injectors | Pins #10, #20, #30, #40 | Drivers that pulse the fuel injectors. | | Coil Packs (IGT/IGF) | IGT (Trigger) / IGF (Confirm) | Controls the firing of the spark plugs. | | VVT-i Oil Control Valve | Dedicated output pin | Controls variable valve timing solenoid. | | Throttle Position Sensor | VTA, VTA2, VC | Vital for "Drive-by-Wire" systems found on later 2NZ-FE models. | | Check Engine Light (MIL) | Dedicated output pin | Used to flash diagnostic codes. |
If you are looking for specific wiring diagrams to troubleshoot your car, you may find the official Toyota service manuals helpful.
This likely refers to:
The Toyota 2NZ-FE is a highly reliable, compact 1.3-liter powerplant found globally in vehicles like the Toyota Yaris, Vitz, Echo, and Belta. When performing engine swaps, troubleshooting electrical gremlins, or installing aftermarket piggyback controllers, having an accurate Electronic Control Unit (ECU) pinout diagram is critical.
Before using a pinout, identify your ECU. The 2NZ-FE typically uses a (often manufactured by Denso). The connectors are usually distinguished by color codes or letter codes (E6, E7, etc.).
Connector B bridges vital telemetry data from the engine's core monitoring systems.
Without stable power and grounding, the ECU cannot boot or process sensor data correctly. Switched power coming from the EFI Main Relay.