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Home >> Mazda >> 2021 >> CX-3 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 14 (Symptom Troubleshooting - Engine) >> Engine Control System Operation Inspection >> Inspection >> Main Relay Operation Inspection >> Notes

Main Relay Operation Inspection: Notes

WARNING: This page is about a different car, the 2016 Mazda CX-3. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify that the main relay clicks when the ignition is switched ON and then off.
    • If there is no operation sound, inspect the following:
      • Main relay (Refer to RELAY INSPECTION .)
      • Wiring harness and connector between battery and main relay terminal A
      • Wiring harness and connector between PCM terminal 2K and main relay terminal E