Notes on pedestrian protection sensor - AH91.60-P-0001-01A

Model 117, 156, 176 with code U60 (Active Bonnet (Pedestrian protection)) 

Model 166, 292 with code U60 (Active Bonnet (Pedestrian protection)) 

Model 172, 231 with code U60 (Active Bonnet (Pedestrian protection)) 

Model 205 with code U60 (Active Bonnet (Pedestrian protection)) 

Model 207, 212 as of model year 2014 with code U60 (Active Bonnet (Pedestrian protection)) 

Model 217 with code U60 (Active Bonnet (Pedestrian protection)) 

Model 222 with code U60 (Active Bonnet (Pedestrian protection)) 

Model 253 with code U60 (Active Bonnet (Pedestrian protection)) 

General 

The pedestrian protection sensor consist of two pressure sensors that are connected with a hose. In the event of a collision, the deformation of the hose generates a change in pressure, which is then recorded by the pressure sensors and sent to the Supplemental Restraint System control unit.

Body 

The pedestrian protection sensor is only supplied as a complete package with pressure sensors and hose. The hose must not be detached from the pressure sensors because this could lead to malfunctions.

Inspection following repair work 

Any repair work performed on the pedestrian protection sensor or on the bumper must always be followed by a visual inspection. If any damage by external influences (e.g. animal bite marks, pressure marks, etc.) is detected during this inspection, the pedestrian protection sensor is to be replaced.

Inspection following an accident 

If the bumper is dismantled because of an accident then the impact absorber must always be assessed.

If the impact absorbers are damaged or defective, they have to be replaced. In this instance the pedestrian protection sensor must always be replaced too.

If the impact absorbers have not been damaged, the pedestrian protection sensor can be used again following a visual inspection.

Installation 

During installation, care must always be taken to ensure that the hose is routed free of any kinks, twists and tension into the impact absorber groove. Malfunctions will result if routing is incorrect.

Repair 

It is not permissible to repair the hose.