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Open circuit

If there is no continuity, the circuit is open. Repair or replace the wiring harness.
- CMP sensor terminal A and body ground
- CMP sensor terminal B and PCM terminal 2S^*1 ,2V^*2
- CMP sensor terminal C and PCM terminal 2AM^*1 , 2X^*2
  
  Fig 1: PCM Connector Terminal Identification
  Courtesy of MAZDA MOTORS CORP.