BAROMETRIC PRESSURE (BARO) SENSOR CONSTRUCTION/OPERATION


BHE014018210T02

• The BARO sensor is installed on the secondary air injection pump bracket.

1
BARO sensor

• The piezoelectric element is enclosed in the sensor and the electric potential difference changes as the BARO drops. The output voltage lowers as the BARO drops.

1
BARO sensor
2
PCM
3
CPU
4
BARO sensor output voltage characteristic
5
Output voltage (V)
6
Low
7
BARO
8
High