Open circuit
WARNING: This page is about a different car, the 2005 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
- EGR boost sensor terminal A and PCM terminal 37
- EGR boost sensor terminal B and PCM terminal 20
- EGR boost sensor terminal C and PCM terminal 33
Courtesy of MAZDA MOTORS CORP.