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Home >> Infiniti >> 2004 >> M45 >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> Ignition Signal >> Diagnostic Procedure >> 13. Check Ignition Coil Power Supply Circuit-V
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13. Check Ignition Coil Power Supply Circuit-V

  1. Reconnect all harness connectors disconnected.
  2. Disconnect ignition coil harness connector.
    Fig 1: Identying Ignition Coil Locations (1 - 8)
    G00796659Courtesy of NISSAN MOTOR CO., U.S.A.
  3. Turn ignition switch ON.
  4. Check voltage between ignition coil terminal 3 and ground with CONSULT-II or tester.
    Fig 2: Checking Voltage Between Ignition Coil Terminal 3 & Ground
    G00796660Courtesy of NISSAN MOTOR CO., U.S.A.

    Voltage: Battery voltage 

OK or NG 

  1. OK: GO TO 15. CHECK IGNITION COIL GROUND CIRCUIT FOR OPEN AND SHORT .
  2. NG: GO TO 14.