Learning about Engine Control Modules
Using the donor ECU, do research into the programming of the device, the neececary modifications etc.
Donor Car Make: Acura Model: RDX Year: 2015 Mileage: 105,742 VIN: 5J8TB4H32FL019302
https://www.rlescalambre.net/obd-ii-communications-protocols https://zeromanual.com/wiki/How_to_build_a_cable_to_access_the_MBB https://acurazine.com/forums/3g-tl-2004-2008-93/finally-tuning-solution-stock-ecu-1000960/ 🔌 Connections Summary Component Pin Connects To ESP32 GPIO4 (RX) SN65HVD230 RXD GPIO5 (TX) SN65HVD230 TXD GND SN65HVD230 GND and ECU A18 3.3V SN65HVD230 VCC SN65HVD230 CANH ECU Pin B20 CANL ECU Pin B21 ECU A4 (BATT+) +12V Bench Power A9 (IGN) +12V Switched (can be tied to BATT+ for bench) A18 (GND) Ground
| Component | Pin | Connects To |
|---|---|---|
| ESP32 | GPIO4 (RX) | SN65HVD230 RXD |
| GPIO5 (TX) | SN65HVD230 TXD | |
| GND | SN65HVD230 GND and ECU A18 | |
| 3.3V | SN65HVD230 VCC | |
| SN65HVD230 | CANH | ECU Pin B20 |
| CANL | ECU Pin B21 | |
| ECU | A4 (BATT+) | +12V Bench Power |
| A9 (IGN) | +12V Switched (can be tied to BATT+ for bench) | |
| A18 (GND) | Ground |