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| Pin No. | Function | Description | | :--- | :--- | :--- | | 1 | Throttle Motor + | Electronic Throttle Body (ETB) drive | | 2 | Throttle Motor - | Electronic Throttle Body (ETB) drive | | 3 | Throttle Position | Signal from ETB potentiometer | | 4 | 5V Supply | Reference voltage for T-MAP/Throttle | | 5 | Sensor Ground | Ground for sensors | | 6 | MAP Sensor | Manifold Absolute Pressure signal | | 7 | Throttle Position 2 | Secondary signal (redundancy) | | 8 | Intake Air Temp | IAT Sensor signal | | 9 | Coolant Temp | Engine Coolant Temperature sensor | | 10 | O2 Sensor Signal | Upstream Oxygen Sensor | | 11 | O2 Sensor Ground | Upstream Oxygen Sensor ground | | 12 | Vehicle Speed | (Alternative pin if not in A) | | 13 | CAN High | CAN-Bus diagnostic line | | 14 | CAN Low | CAN-Bus diagnostic line | | 15 | K-Line | ISO 9141 Diagnostic line (non-CAN variants) | | 16 | Air Conditioner Evap Temp | (If equipped) | | 17 | Knock Sensor | Engine knock signal | | 18 | Camshaft Sensor | Cylinder identification sensor | | 19 | Crankshaft Sensor | RPM/Position sensor (VR or Hall) | | 20 | Power Steering | Power steering pressure switch | | 21 | Ignition Switch | +12V after ignition key | | 22 | Battery Constant | Keep-alive memory power (Direct Battery) | | 23 | Ground | ECU Ground | | 24 | Ground | ECU Ground | me745 pinout free