Toyota 4afe Ecu Pinout

ECU pinouts for the 4A-FE vary by year and market; always confirm with the correct service manual or ECU part number before wiring. The pins listed above cover the major signals you’ll commonly need for diagnostics or swaps.

: Crankshaft/Engine speed signal from the distributor pickup coil. toyota 4afe ecu pinout

Constant power from the EFI main relay to maintain ECU memory. ECU pinouts for the 4A-FE vary by year

If you own a pre-1992 4A-FE, your ECU pinout will differ significantly. Do not use the pinout above for a 1989 Corolla. toyota 4afe ecu pinout