Engine Control Module (ECM) Removal and Installation: Removal

Remove battery.
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: Disconnecting Connectors From ECM
  Courtesy of SUZUKI OF AMERICA CORP.
Remove battery tray with ECM.
Remove ECM (1) from battery tray by removing its mounting nuts (2).

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