Key Interlock
WARNING: This page does not describe the selected car, but rather 16 other vehicles, including the 2005 Acura NSX, 2004 Acura NSX, 2003 Acura NSX-T, 2003 Acura NSX, and 2002 Acura NSX-T. However, it is still accessible from the selected car via links, so may be relevant.
Battery voltage is supplied at all times through fuse No. 45 (20-amp) to the key interlock switch. When the key is in the ignition, battery voltage is supplied to the key interlock solenoid and the key interlock circuit in the interlock control unit. When the A/T shift lever is in Park and the A/T shift lever push button is released, the key interlock circuit removes ground from the key interlock solenoid, the solenoid is de-energized, and the key can be removed from the ignition.