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Open circuit

WARNING: This page is about a different variant/trim than selected.

If there is no continuity, there is an open circuit. Repair or replace the wiring harness.
- ECT sensor terminal A and PCM terminal 1M
- ECT sensor terminal B and PCM terminal 2H
  
  Fig 1: Identifying ECT Sensor Connector Terminals
  Courtesy of MAZDA MOTORS CORP.