4s-fe Ecu Pinout [patched] -

Locate the ECU. It is usually behind the glovebox (Corona/Carina) or under the passenger kick panel (Celica). Look for the model number printed on the metal case.

If you have no spark, check the IGT signal. If you have spark for one second and then it dies, your IGF signal is likely missing. 4s-fe ecu pinout

: Ignition feedback signal sent from the ignitor to the ECU to confirm spark. Locate the ECU

To retrieve error codes without a scanner, you can bridge the following pins in the "Diagnosis" box under the hood: : Bridge these with a paperclip. Ignition ON 4s-fe ecu pinout

Often integrated into the MAP sensor or air box to account for air density.

: Ignition Timing signal sent from the ECU to the ignitor.