: Air-Fuel Ratio (A/F) sensor inputs (Bank 1 & 2, Sensor 1) for precise fuel trimming.
Toyota produced the 2UZ-FE from 1998 to 2011 across multiple platforms (Lexus LX470, Toyota Land Cruiser J100/J105, Tundra, Sequoia, and 4Runner). This guide focuses on the VDC (Variable Valve Timing with intelligence) and Non-VVT-i variants, noting that pinouts changed significantly in 2005. 2uzfe ecu pinout
| Pin # | Signal Name | Signal Description | | --- | --- | --- | | 1 | VCC | Battery voltage supply | | 2 | IGF | Ignition feedback signal | | 3 | IG | Ignition switch signal | | ... | ... | ... | | 15 | injector #1 | Fuel injector control signal (cylinder 1) | | 16 | injector #2 | Fuel injector control signal (cylinder 2) | | ... | ... | ... | | 25 | TPS | Throttle position sensor signal | | 26 | MAP | Manifold absolute pressure sensor signal | | ... | ... | ... | : Air-Fuel Ratio (A/F) sensor inputs (Bank 1
You have power at the dash, but the CEL doesn't illuminate when you turn the key? Don't blame the ECU yet. | Pin # | Signal Name | Signal
Engine Control Wiring Diagram (Scribd) : High-level overview of the EFI and ignition circuits.
Before we dive into wire colors and connector cavities, let’s discuss the stakes. The 2UZ-FE ECU is a sophisticated unit. Connecting 12V to a 5V sensor line will destroy the ECU instantly. Conversely, misplacing a ground can lead to erratic idle, transmission slippage (if using the integrated A750F controller), or a no-start condition.