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Open circuit

If there is no continuity, there is an open circuit. Repair or replace the wiring harness.
- Barometric pressure sensor terminal A and PCM terminal 1AG
- Barometric pressure sensor terminal B and PCM terminal 1AA
- Barometric pressure sensor terminal C and PCM terminal 1AE
Fig 1: Identifying Barometric Pressure Sensor Connector Terminals
Courtesy of MAZDA MOTORS CORP.