Regardless of the specific model, Toyota uses a standardized naming convention for their ECU pins. When looking at a pinout diagram, these are the wires you must identify first: Power and Ground Switched 12V power from the EFI relay.
Power and signal for the Throttle Position Sensor (TPS) . toyota 89661 ecu pinout
| Connector | Typical Color | Common Circuits | |-----------|---------------|------------------| | A (22-pin) | Gray or White | Injectors, ignition coils, power, grounds | | B (22-pin) | Gray | Sensors (TPS, MAP/MAF, ECT, IAT, CKP, CMP) | | C (16-22 pin) | Black or Blue | Solenoids (VVT, EGR, purge), fuel pump relay, CEL | | D (if present) | Black | Immobilizer, diagnostics (K-Line, CAN low/high) | Regardless of the specific model, Toyota uses a