Supplemental restraint system function - GF91.60-P-0003FL

MODEL 212 

Shown up to 28.2.13 

Fig 1: Supplemental Restraint System Block Diagram - Shown Up To 28.2.13

Courtesy of MERCEDES-BENZ USA

Shown as of 1.3.13 

Fig 2: Supplemental Restraint System Block Diagram - Shown As Of 1.3.13

Courtesy of MERCEDES-BENZ USA

Function requirements, general 

• The supplemental restraint system must be programmed to the vehicle (left or right-hand drive vehicle, equipment programming and configuration parameters)
• Circuit 15R ON

The status of circuit 15R is sent by the electronic ignition lock control unit via chassis CAN (up to 28.2.13) or chassis CAN 1 (as of 1.3.13) to the supplemental restraint system control unit.

After circuit 15R is switched off, parts of the supplemental restraint system remain active for a certain run-on time.

Power reserve: The supplemental restraint system control unit provides a power reserve for at least t = 300 ms if the battery has been disconnected.

Supplemental restraint system, general information 

The supplemental restraint system is used for occupant protection and, with code (U60) Pedestrian protection, also for pedestrian protection.

Belt locking system:

The belt is prevented from extending in certain situations, irrespective of the status of the supplemental restraint system.

The following subfunctions are described in separate documents:

• Passenger-side seat occupied recognition function 
• Actuate supplemental restraint system, function 
• Deploying of pyrofuse, function 
• Pedestrian protection function (with code (U60) Pedestrian protection)