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Home >> Mazda >> 2017 >> 5 GT, Automatic Trans >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Symptom Troubleshooting - Engine Control >> Engine Control System Operation Inspection >> Main Relay Operation Inspection
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Main Relay Operation Inspection

  1. Verify that the main relay clicks when the ignition is switched to ON and off.
    • If there is no operation sound, inspect the following:
    • Main relay (See RELAY INSPECTION .)
    • Harness and connector between ignition switch and main relay
    • Harness and connector between PCM terminal 1Q and main relay terminal E