the open end of the first pressure tube 66 is attached to the second pressure sensor 74 and the open end of the second pressure tube 68 is attached to the first pressure sensor 72 fig9 illustrates a sectional view of the energy absorber 63 the first pressure tube 66 the second pressure tube 68 the first pressure sensor 72 and the second pressure sensor 74 enclosed within the pressure sensor housing 70 shown in fig7 and 8 the sectional view shown in fig9 is taken along line 9 9 of fig8 the pressure sensor housing 70 is fitted within a recessed area 71 formed in the energy absorber 63 fig1 taken along line 10 10 of fig7 illustrates a sectional view of the pedestrian impact sensing system 60 according to the present embodiment as illustrated the first pressure tube 66 and the second pressure tube 68 are positioned behind the energy absorber 63 but in front of the bumper 17 in operation in an impact event the impact sensing unit responds with a signal to the electronic control unit 24 the signal is generated by the pressure sensing unit 22 or 22 u2032 is itself a response to a change in pressure sensed in the pressure tube 33 or.