I've seen a Nissan Tech post information about a Silver Box located down in the bottom inside of our Center Console gear shift area somewhere and if you mess with it be VERY careful, your Airbags WILL Deploy
Here's a couple of his quotes regarding disassembling the entire Center Console:
SAFETY TIP!!!! Before you remove the console, disconnect the battery first and give the airbag system 5 to 10 minutes to bleed off its charge. I have seen to many times a person use power tools to remove the bolts and screws on the center console, or drop the console back down, and set off the curtain airbags. I also saw someone try to take a center punch and dimple a bracket for drilling and set them off.
No the Sensing and Diagnostic Unit is located on the floor beneath the console at the back of it. It's about a 5"x5" silver box with 3 yellow plugs going to it. It has the inertia sensors built into it. It will also set off the curtain bags if you unbolt it and turn it over. It thinks you have had a rollover. It's funny to see the look on someones face that turns one over while you are screaming for them to stop. There are a few people I know that get the shakes everytime they have to touch one now, one of them is the guy that was sitting in the drivers seat while the other guy was hitting the bracket with the punch and the driver airbag went off. The little black box mounted beside it is the G-sensor for the VDC. Just follow the safety procedure of disconnecting the battery when removing the center console, and you have nothing to worry about unless you shoot a screw through a harness or something, but that another story.
It's definitely tied into the SRS so if you decide to mess with it, just plan on setting off your Airbags.
Event data recorder - Wikipedia, the free encyclopedia
Disabling an EDR
An EDR is typically mounted either under a front seat, inside the center console between the seats, or inside the dashboard. It is usually a square-ish box 4-5 inches on a side. It will have a yellow wiring harness plug, as do all airbag system components, and the plug is usually held in place by at least one "lock" to prevent it from coming dislodged inadvertently.
Disconnecting or tampering with the EDR may prevent the airbags from working. An overly simplified explanation of the way the airbags work is that an accelerometer feeds a circuit that activates the crash algorithm if the accelerometer shows a steep deceleration for several cycles in a row. The crash algorithm does various things including activating the airbags.
To disable the memory portion of an EDR there are two options: (Option 1) To disable the interface look for traces or connectors to the open plug on the box. If you cut them the data still exists, but cannot be read without someone finding and repairing the cut. (Option 2) The EEPROM is where the permanent data record is stored. If you disable it no record will be present. This does not affect the operation of the rest of the system which uses RAM as memory. The EEPROM is only used for archiving data for accident analysis--it has no operational function for the car. To disable the EEPROM cut its voltage pin. This is usually the wire on the upper right of the EEPROM. The top of the chip is marked by a half moon indentation. How EEPROMS Work. The voltage wire is marked "Vcc" on a chip pinout.
Note that some states such as New York have laws that make it a misdemeanor to tamper with an EDR. In addition, companies modifying vehicle safety systems face steep fines from NHTSA.
Here's a couple of GM ones: