| Terminal (Symbol) | Condition | Specified Value | |---|---|---| | | Always | 9 to 14 V | | +B (BATT) - E1 (E1) | Ignition switch ON | 9 to 14 V | | IGSW (IGSW) - E1 (E1) | Ignition switch ON | 9 to 14 V | | MREL (MREL) - E1 (E1) | Ignition switch ON | 9 to 14 V | | VCPA (VCPA) - E2 (E2) | Ignition switch ON | 4.5 to 5.5 V | | VC (VC) - E2 (E2) | Ignition switch ON | 4.5 to 5.5 V | | IDL (IDL) - E2 (E2) | Throttle valve fully closed | 7.5 to 14 V | | TPS (VTA1) - E2 (E2) | Ignition switch ON, throttle valve fully closed | 0.3 to 0.9 V | | Ox1 (OX1B) - E1 (E1) | Engine speed at 2500 rpm for two minutes after warming up | Fluctuates between 0 and 9 V | | THW (THW) - E2 (E2) | Idling, engine coolant temperature 80°C (176°F) | 0.2 to 1.0 V |
These are the most complex. They feature Variable Valve Timing, a plastic intake manifold, and often require a communication link with the instrument cluster and body control modules to function without "limp mode." Primary Pinout Categories 2uzfe ecu pinout
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. | Terminal (Symbol) | Condition | Specified Value
Without stable voltage supply and reference grounds, the microcomputer cannot process engine computations. Without stable voltage supply and reference grounds, the
Before chasing sensor codes, always verify the engine computer is getting power. The standard operating voltages are as follows:
90% of wiring issues on these V8s stem from poor grounds on the back of the cylinder heads. Ensure the ECU "E" pins have a clean, unpainted path to the negative battery terminal. Finding Your Specific Diagram
| Pin No. | Wire Color | Signal Name | Description | | :--- | :--- | :--- | :--- | | | W-R | +B | Battery Positive (Constant 12V) | | 2 | B-O | E1 | ECU Ground (Sensor Ground) | | 3 | B-R | E01 | Power Ground (Injector/IGN) | | 4 | B-W | E02 | Power Ground (Injector/IGN) | | 6 | B-Y | #10 | Injector Cylinder 1 | | 7 | G | #20 | Injector Cylinder 2 | | 8 | G-R | #30 | Injector Cylinder 3 | | 9 | G-Y | #40 | Injector Cylinder 4 | | 10 | R-Y | #50 | Injector Cylinder 5 | | 11 | R-G | #60 | Injector Cylinder 6 | | 12 | W-L | #70 | Injector Cylinder 7 | | 13 | L-Y | #80 | Injector Cylinder 8 | | 15 | W-B | ELS | Electrical Load Signal | | 16 | G-L | VTA | Throttle Position Sensor Signal | | 17 | B | IDL | Idle Switch Signal | | 20 | P-L | ACIS | Acoustic Control Induction Valve | | 21 | Y | VCC | Sensor Power Supply (+5V) | | 22 | L-R | VG | Mass Air Flow Meter Signal | | 23 | B-B | E2 | Sensor Ground | | 24 | W | KNK1 | Knock Sensor 1 | | 25 | L-W | OXL1 | Oxygen Sensor (Bank 1 Sensor 1) | | 26 | P-B | THW | Engine Coolant Temp Sensor | | 27 | B-Y | EGR | EGR Valve Control | | 29 | G-W | NE+ | Crankshaft Position Sensor (+) | | 30 | R | NE- | Crankshaft Position Sensor (-) | | 31 | R-B | IGT1 | Ignition Coil 1 |