Open circuit

If there is no continuity, there is an open circuit. Repair or replace the wiring harness.
- Variable tumble shutter valve switch terminal A and PCM terminal 2AU^*1 ,2AR^*2 , 2W^*3
- Variable tumble shutter valve switch terminal B and PCM terminal 2AY^*1 ,2P^*2 , 2AA^*3
- Variable tumble shutter valve switch terminal C and PCM terminal 2AE
  
  Fig 1: PCM Connector Terminal Identification
  Courtesy of MAZDA MOTORS CORP.