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Home >> Mazda >> 2018 >> CX-3 Touring, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 108 (Symptom Troubleshooting - Engine Control) >> Engine Control System Operation Inspection >> Main Relay Operation Inspection

Main Relay Operation Inspection

WARNING: This page is about a different car, the 2018 Mazda CX-5. 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 to ON and then off.
    • If there is no operation sound, inspect the following:
      • Main relay (See RELAY INSPECTION .)
      • Wiring harness and connector between battery and main relay terminal A
      • Wiring harness and connector between PCM terminal 2B and main relay terminal E