Bosch Ecu Pinout Datasheet - ((free))

| Pin | Signal | Type | Function | Wire Color | | :--- | :--- | :--- | :--- | :--- | | T121/3 | 5V | Supply | Throttle Position Sensor (TPS) | Yl/Bk | | T121/4 | Ground | Sensor | Sensor Ground (Analog) | Br | | T121/15 | 12V | Power | Main Relay Control | Red/Gn | | T121/55 | Ignition | Output | Coil 4 (Power Stage) | Gn/Yl | | T121/90 | CAN-H | Comms | Drivetrain CAN Bus | Or/Bk |

Analog and digital input pins monitor real-time operating conditions. A datasheet dictates which pins handle these incoming voltages: Bosch Ecu Pinout Datasheet

A standard datasheet divides physical hardware connections into logical categories based on electrical characteristics and signal direction. 1. Power Supply and Ground Tracks | Pin | Signal | Type | Function

Do NOT back-probe throttle pedal or throttle body signal wires (usually 5V reference) with a standard steel pin. You will stretch the terminal. Use proper gold-plated breakout leads. The datasheet won’t save you from mechanical damage. Power Supply and Ground Tracks Do NOT back-probe