Subaru’s WRX burst onto the scene in the late 90s, finally rewarding the legions of fans in the US with turbocharged boxer glory. Now in it’s fourth iteration, the WRX is offered in sedan or hatchback variants and with the rumored demise of the Mitsubishi Evolution, the clear winner in the import turbo AWD battle.
Today we’ll be looking at the 2001 Subaru WRX ECU Pinout, and showing you what pins you may or may not need for your engine swap or piggyback device.
| Pin # | Name | Signal Type |
| D2 | Power | 11 volt – 14 volts with key on |
| D8 | Power Ground | Ground |
| D19 | O2 Sensor Signal (Front) | Analog |
Connector C
| Pin # | Name | Signal Type |
| C15 | Fuel Pump | Violet/White – Relay Power |
| C8 | Power Ground (Injector) | Ground |
| C9 | Tach Signal | RPM |
| C18 | Power Ground (Coils) | Ground |
Connector E
| Pin # | Name | Signal Type |
| E1 | Power Ground | Ground |
| E7 | Mass Air Flow Sensor Ground | Ground |
| E13 | Mass Air Flow Sensor | Analog |
Connector B
| Pin # | Name | Signal Type |
| B7 | Throttle Position Sensor | Analog |
| B8 | Manifold Atmospheric Pressure Sensor | Analog |
| B17 | O2 Sensor Signal (Rear) | Analog |
| B18 | Engine Coolant Temperature Sensor | Analog |
| B19 | Sensor Ground | Ground |
| B27 | Intake Air Temperature Sensor | Analog |
Connector A
| Pin # | Name | Signal Type |
| A1 | Vehicle Speed Sensor | Speed |
Hope you enjoyed our Subaru WRX ECU Pinout article, if you need any specific pins or information please leave us a comment below and let us know.
