LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 2004 >> RX-8 1.3 3 >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting [Engine Control System 13B-MSP) >> Engine Control System Operation Inspection >> Main Relay Operation Inspection
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Main Relay Operation Inspection

  1. Verify that the main relay clicks when the ignition switch is turned to the ON position and off.
    • If there is no operation sound, inspect the following:
      • Main relay (See MAIN RELAY OPERATION INSPECTION .)
      • Wiring harness and connector between battery and main relay terminal A.
      • Wiring harness and connector between PCM terminal 5AC, 5AF and main relay terminal C.
      • Wiring harness and connector between PCM terminal 4E and main relay terminal E.
      • Wiring harness and connector between PCM terminal 4Q and engine fuse.
scientia non olet · About LEMON Manuals