Where is ecm CONTROL on 2004 ALTIMA Nissan?

On a 2004 Nissan Altima, the Engine Control Module (ECM) is typically located in the engine compartment, near the driver's side, mounted on the firewall. You may need to remove some components or covers to access it, as it's often secured with bolts and connected to various wiring harnesses. Always ensure the battery is disconnected before attempting any work on the ECM.