: 5V reference power provided by the ECU to sensors. THW : Engine Coolant Temperature (ECT) sensor input. THA : Intake Air Temperature (IAT) sensor input. THF : Fuel Temperature sensor input.
Because the 2KD-FTV underwent minor electrical revisions (e.g., changes in June 2011), it is best to verify your specific model year. Official Wiring Guides toyota 2kdftv ecu pinout diagram best
The 2KD-FTV ECU typically features several high-density connectors (often labeled A through E). Key pin categories include: : 5V reference power provided by the ECU to sensors
: Look for terminals labeled +B (Main Power), BATT (Direct Battery), and E1/E2 (Sensor and Logic Grounds). THF : Fuel Temperature sensor input
Here are the critical pins you will likely need for diagnostics, swapping, or repair.
| Pin | Wire Color | Signal | Notes | |-----|------------|-------------------------------|---------------------------------| | B1 | L (Blue) | Injector 1 (EDU1) | High side (80V+ peak) | | B2 | L-W (Blue-White) | Injector 2 (EDU2) | High side | | B3 | L-R (Blue-Red) | Injector 3 (EDU3) | High side | | B4 | L-B (Blue-Black) | Injector 4 (EDU4) | High side | | B5 | B-W (Black-White) | Injector 1 return (low side) | To ECU driver | | B6 | B (Black) | Injector 2 return (low side) | To ECU driver | | B7 | B-R (Black-Red) | Injector 3 return (low side) | To ECU driver | | B8 | B-Y (Black-Yellow) | Injector 4 return (low side) | To ECU driver | | B11 | R (Red) | SCV (Suction Control Valve) + | Fuel rail pressure control | | B12 | B (Black) | SCV - | | | B13 | Y-B (Yellow-Black) | EGR step motor coil 1 | | | B14 | Y-R (Yellow-Red) | EGR step motor coil 2 | | | B15 | L-Y (Blue-Yellow) | EGR step motor coil 3 | | | B16 | L-B (Blue-Black) | EGR step motor coil 4 | |