Ecu Design Pinout Work Jun 2026

| Pin | Signal | Type | Notes | |-----|--------|------|-------| | PWR1 | VBAT | Power | Battery +12V | | PWR2 | GND | Power | Main ground | | PWR3 | INJ_1 | Low-side out | Injector 1 | | PWR4 | INJ_2 | Low-side out | Injector 2 | | SIG1 | TPS_5V | Input | Sensor supply | | SIG2 | TPS_SIG | Analog in | 0–5V throttle | | SIG3 | CAN_H | Diff pair | 250 kbps | | SIG4 | CAN_L | Diff pair | | | SIG5 | GND_SENS | Analog GND | Star point to PWR2 |

Before a single wire is routed or a schematic drawn, the pinout work begins with the . This phase involves creating a "Seek & Provide" list. The Systems Engineer must determine: ecu design pinout work

| Pin | Function | Signal Type | Specs | |-----|----------|-------------|-------| | 1 | Main Power (B+) | Power | 12V, 30A | | 2 | Main Power (B+) | Power | 12V, 30A | | 3 | Main Ground | Ground | 0V | | 4 | Main Ground | Ground | 0V | | 5 | Sensor Ground | Ground | 0V, isolated | | 6 | Sensor Power 5V | Output | 5V ±0.1V, 500mA | | 7 | Sensor Power 5V | Output | 5V ±0.1V, 500mA | | 8 | Sensor Power 8V | Output | 8V ±0.2V, 200mA | | 9 | Keep-Alive Memory | Power | 12V, 10mA | | 10 | Ignition Switch | Input | 12V switched | | 11 | Relay Control 1 | Output | Low-side driver, 2A | | 12 | Relay Control 2 | Output | Low-side driver, 2A | | Pin | Signal | Type | Notes

The physical silicon of the microcontroller (MCU) dictates the pinout. Modern MCUs have "multiplexed" pins, meaning one physical leg of the chip might serve as a General Purpose Input/Output (GPIO), an Analog-to-Digital Converter (ADC) input, or a PWM output. Modern MCUs have "multiplexed" pins, meaning one physical

In the automotive industry, ECUs often have variants. A base ECU might control a 4-cylinder engine, while a premium variant controls a V8.

:

Specifically designed to interface with the OBD-II port , allowing scan tools to read fault codes and live data. Key Design & Work Practices