| Pin | Wire Color | Signal Name | Function | Typical Voltage/Behavior | |------|------------|----------------|------------------------------------------|----------------------------| | 1 | Black/Yellow | EGR Solenoid | EGR control (ground switched) | 0V or 12V | | 2 | Red/Black | TPS Signal | Throttle position sensor (main) | 0.5V (idle) – 4.5V (WOT) | | 3 | Green/White | TPS Ground | Sensor ground reference | 0V | | 4 | Brown | Fuel Temp Sensor | In-pump fuel temperature | 2.5V @ 20°C | | 5 | Yellow/Red | Spill Valve (+) | Injection pump timing control | PWM ~90-200Hz | | 6 | Black | Spill Valve (-) | Return path for spill valve | PWM ground | | 7 | White | Vehicle Speed Sensor (VSS) | Speed signal from gearbox | AC sine wave or 5V square | | 8 | Blue/Red | Neutral Switch | Manual transmission neutral | 12V in gear, 0V in neutral | | 9 | Light Green | ACC Signal | Ignition switch accessory | 12V key ON | | 10 | Black/White | ECU Ground (Power) | Main ground for drivers | <0.1V drop |