Engine Control Module (ECM) Removal and Installation: Removal

Disconnect negative cable at battery.
Remove ECM cover.
Disconnect connectors from ECM as follows.
1. Push lock (1) to release locking of lock lever (2).
2. Turn lock lever to arrow direction until it stops.
  
  Fig 1: Pushing Lock To Release Locking Of Lock Lever
  Courtesy of SUZUKI OF AMERICA CORP.
Remove ECM (1) from its bracket by removing its mounting bolts (2).

Fig 2: Identifying ECM
Courtesy of SUZUKI OF AMERICA CORP.