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Vacuum Sensor 7/160: Notes

Type 

Vacuum pressure sensor: Double piezoresistive sensors

The sensor measures the pressure change between the vacuum chamber and the work chamber. The signal ratio between the chambers should correspond.

characteristic 

Vacuum chamber (1): Voltage between terminals #30 (#A30) and #40 (#A40) should be similar to diagram below.

Work chamber (2): Voltage between terminals 41 (A#41) and #40 (#A40) should be similar to diagram below.

Fig 1: Identifying Vacuum-Work Diagram
GLL155651Courtesy of VOLVO CARS CORPORATION