last event recorder

[offshore]

Have your LER removed by the dealer!

 

[DkBG]

Couldn't it also prove you innocent if a cop lies about what you did . Cliff

 

[c4c5specialist]

Post from other topic.

Hi there,
The speculation is moot here, and this is the reason why.
You cannot remove the air bag system, due to NHSTA guidelines for safety.
Here is the facts on function of the air bag system, PCM and TCS as they relate to data recording of failures, and air bag deployment.
The BLACK BOX that so many people speak of, simply records crash data in the event of an accident.
Theory abounds as to what is recorded, here is exactly what is recorded when an air bag deployment is reached.

8 Digit GM Part Number
The scan tool displays an 8 digit part number. This number is the GM part number that is stored within the SDM memory.

Active Switch
The scan tool displays Enabled/Disabled. The signal from the SDM indicates whether the inflatable restraint IP module switch is in the ON or OFF position.

Calibration ID
The scan tool displays a 4 digit number. This calibration ID is the check sum of the SDM read only memory contents.

Component Serial #8-12
The scan tool displays digits 8 through 12 of the SDM serial number.

Component Serial #13-18
The scan tool displays digits 13 through 18 of the SDM serial number.

Driver Frontal Loop
The scan tool displays Enabled/Disabled. The signal from the SDM indicates whether the driver frontal loop is enabled or disabled.

Driver Side Belt Status
The scan tool displays Buckled or Unbuckled. The signal from the drivers seat belt switch indicates whether the driver seat is buckled or unbuckled.

Ignition Voltage
The scan tool displays 0-20 volts. The Ignition represents the system voltage measured by the SDM at its ignition feed.

Julian Date of Build
The scan tool displays a 3 digit number. An example would be 723. 723 is July 23 which is day 204 based on the Julian Calendar.

Passenger Frontal Loop
The scan tool displays Enabled/Disabled. The signal from the SDM indicates whether the passenger frontal loop is enabled or disabled.

Passenger Side Belt Status
The scan tool displays Buckled or Unbuckled. The signal from the passengers seat belt switch indicates whether the passenger seat is buckled or unbuckled.

PROM ID
The scan tool displays a 4 digit number. This number is the programmable read-only memory (PROM) ID.

Year Module Built
The scan tool displays what year the module was built.

Nowhere in the airbag system, does it have the ability to record vehicle speed when an impact occurs. This is because the Corvette does NOT have dual stage airbags.

Theory about vehicle speed, lateral acceleration and the like is all dependant of IF a code sets at the time of the event. When codes are set in either the PCM or the TCS system, the record function is called 'freeze frame failure'. This records the 15 second prior to the failure, and 15 seconds after, to assist service mechanics, like me to find the cause and duplicate the failure. However, this is in the traction control system, or the powertrain control module, and does NOT happen when air bags deploy on Corvette.
There have been numerous attempts by where people claim that the 'black box' has buried them in court, or the like. Fact of the matter is, that in the Corvette vehicle, it does not occur and there are other reasons.
Allthebest, c4c5

 

[blocker44]

Great information c4c5specialist. I remember all the assistance you provided on CF. You are awesome.;worship

 

[DkBG]

Thanks C4C5 . Cliff