The 2UZ-FE is a 4.7-liter V8 gasoline engine produced by Toyota from 1998 to 2012, known for its use in heavy-duty SUVs and pickup trucks. The is the engine's brain, using a 32-bit microprocessor to manage fuel injection, ignition timing, and other vital functions.
For common applications like the 2004–2006 Toyota Tundra or Land Cruiser 100, the Engine Control Module (ECM) uses multiple connectors (labeled E3 through E7) to manage the Sequential Fuel Injection (SFI) and ignition systems. Terminal Symbol Connector-Pin Description Standard Voltage/Condition EFI Main Relay 9–14 V (Ignition ON) +B / +B2 Power source for ECU 9–14 V (Ignition ON) VC Sensor power supply 4.5–5.5 V (Ignition ON) NE+ / NE- E5-25 / E5-24 Crankshaft Position Pulse generation (Engine idling) G2+ / G2- E5-19 / E5-29 Camshaft Position Pulse generation (Engine idling) #10 to #80 E5/E7 pins Fuel Injectors 1–8 Pulse generation (Engine idling) IGT1 to IGT8 E7/E5 pins Ignition Signals Pulse generation (Engine idling) M+ / M- E7-5 / E7-4 Throttle Motor Pulse generation (Engine idling) Key Wiring & Component Guides
Have a specific pinout question? Drop your year and ECU code in the comments below.
Since most swap questions revolve around the later, more complex VVTi engine, we’ll focus there. The ECU (Part numbers like 89661-6A380) uses four 22-pin connectors (A, B, C, D). That’s 88 potential circuits.
Features Variable Valve Timing with intelligence (VVTi) and plastic intake manifolds. These engines use a completely different 32-bit ECU architecture with higher pin counts to manage the oil control valves and updated ignition coils. 2. Essential Pin Categories for Standalone Swaps 2uzfe ecu pinout
Ignition timing signals for the individual coils. M+, M-: Throttle control motor signals. Variations by Vehicle and Year
Do not wire your fuel pump directly to the ignition switch for safety reasons. Instead, find the (Fuel Control) pin on the ECU. The ECU grounds this pin to activate the fuel pump relay when it detects the engine cranking via the crankshaft sensor. Step 4: Deal with the Immobilizer (If Equipped)
: If you are performing a standalone engine swap, experts from Lexus V8 Engines
2UZ-FE ECUs from 2000+ have an immobilizer built into the combination meter (instrument cluster). If you swap this engine without the original key, transponder ring, and cluster, the ECU will cut fuel for 2 seconds after start. You will need a tuner to delete the immobilizer or swap to a pre-2000 ECU. The 2UZ-FE is a 4
Before chasing sensor codes, always verify the engine computer is getting power. The standard operating voltages are as follows:
Engine and sensor grounds. E01 and E02 are typically heavy-duty grounds for injectors and coils. Sensors (Inputs)
Let’s break down the 2UZ-FE ECU pinout in excruciatingly useful detail.
: Visual layouts of the engine control system (SFI, ESA, and ETCS-i) are available on 2UZ-FE ECU Pinout and Wiring Diagram Standalone Swap Info The ECU (Part numbers like 89661-6A380) uses four
Overview: Historical engine control system diagrams comparing setups can be found in the Toyota 2UZ History PDF. 2UZ-FE VVT Manual Wiring - Lexus V8 Engines LLC
(VVT-i): Full terminal voltage specs and wire colors are available on Scribd's 2UZ-FE ECM Terminal Specifications Sequoia/
: Crucial for sequential fuel injection and ignition timing. Knock Sensors (KNK1 / KNK2) : Monitor for detonation to protect engine internals. Mass Air Flow (VC / E2)