| Sensor/Actuator | Factory ECU Pin | Wire to Aftermarket | | :--- | :--- | :--- | | Crank Position (G1/G2) | E6-16 & E6-18 | Dedicated VR+ / VR- input | | Cam Position (G Signal) | E6-17 | Digital Input | | TPS Signal | E6-2 | Analog 0-5V Input | | ECT Sensor | E6-7 | Analog Temp Input | | IAT Sensor | E6-11 (On MAF) | Analog Temp Input | | Injector #1 | E5-10 | Injector Output 1 | | Ignition Coil #1 | E7-4 | Ignition Output 1 | | Fuel Pump | E7-6 | Aux Output (Ground) |
Pins E5-25 and E5-26 must have a clean ground. If these are loose, the ECU will reboot randomly while driving. Connector E6 (Sensors - The Critical Inputs) | Pin | Wire Color | Function | Diagnostic Test | | :--- | :--- | :--- | :--- | | E6-2 | Gray | Throttle Position Sensor (TPS) Signal | 0.5V (Idle) to 4.5V (WOT) | | E6-7 | Light Green | Engine Coolant Temp (ECT) | ~2.5V cold, ~0.3V hot | | E6-12 | Light Green/Red | Mass Air Flow (MAF) Signal | 1.0V idle to 4.0V redline | | E6-17 | Blue/Red | Camshaft Position (G Signal) | 5V square wave (scope req.) | | E6-18 | Black | Sensor Ground | Continuity to Chassis Ground | 2uzfe ecu pinout
The ECU pinout for the 2UZ-FE is not just a wiring diagram; it is the Rosetta Stone for making this indestructible engine run. | Sensor/Actuator | Factory ECU Pin | Wire
Check the color codes above—Toyota was mercifully consistent with wire colors across decades. If the wire is Light Green with a Black stripe , it is almost always the Engine Coolant Temp sensor on every 2UZ made. Whether you are troubleshooting a P0335 crankshaft position
If you are reading this, you are likely deep into a project involving Toyota’s legendary 4.7-liter V8, the 2UZ-FE. Whether you are troubleshooting a P0335 crankshaft position code, performing a standalone engine swap into a classic 4Runner, or trying to figure out why your Land Cruiser’s TCM isn’t talking to the ECM, you need the map to the brain.