The Toyota 4A-FE ECU pinout varies slightly depending on the specific vehicle model and year (such as the Corolla, Celica, or Corona), but generally follows a standard configuration for its three main connectors (often 26-pin, 16-pin, and 22-pin) Core Signal Pinout (Common Pins)
Below are the most critical pins you will encounter when wiring or troubleshooting. Note that colors may vary slightly by year, but pin locations generally remain consistent within specific generations. 1. Power and Ground Signals These pins ensure the ECU turns on and stays grounded. +B and +B1: 12V Switched Power (from the EFI main relay). BATT: Permanent 12V Power (for memory/fault codes). toyota 4afe ecu pinout
The table above fits most 1992–1995 Corolla AE101 (4AFE). Variations exist: The Toyota 4A-FE ECU pinout varies slightly depending
Inputs/Outputs:
You cannot use a Type 2 pinout on a Type 3 ECU. Always search specifically for "1996 4A-FE OBD-II ECU pinout." Power and Ground Signals These pins ensure the
Injector and Ignition Output Pins