Nissan Sentra ECU Location and Removal Instructions
1. ECM is located in the right side of the cowl top (behind the strut tower). For this
inspection:
Remove engine control harness bracket on the strut tower.
Remove quick connector on the ventilation hose.
Remove ECM fixing bolts and pull ECM out all the way.
Remove ECM cover fixing bolts
Remove ECM fixing bolts.
Remove ECM with the harness from the cover
Download a pdf of these instructions here