Vehicle systems forensics: Freeze frame data

Here's what freeze frame data can tell you

Freeze frame is the first of three sources of information that can be obtained directly from a vehicle using various pieces of software and equipment which are commercially available. But what is it and where does it come from?

When a fault occurs on a vehicle, a vehicle technician will attempt to diagnose the cause of the fault. Freeze frame data is a source of information a technician can access to identify what the vehicle was doing at the moment the fault occurred.

Although the information is intended to assist a technician repairing a vehicle, it also has a use in collision reconstruction and vehicle systems forensics.

Where a vehicle is involved in a collision, the damage caused during a collision can lead to multiple faults occuring all of which have the potential to store freeze frame data.

Freeze frame data can contained vehicle speed, engine speed, engine temperature and so much more.

The data that is stored and can be accessed varies vehicle to vehicle and it can also depend on the system or software you are using to access it.

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