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Home >> Infiniti >> 2004 >> M45 >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> DTC P0420, P0430: Three Way Catalyst Function >> Diagnostic Procedure >> 5. Check Injectors

5. Check Injectors

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  1. Stop engine and then turn ignition switch ON.
  2. Check voltage between ECM terminals 5, 6, 7, 13, 14, 15, 16, 17 and ground with CONSULT-II or tester.
    Fig 1: Checking Voltage Between ECM Terminals & Ground
    G00796011Courtesy of NISSAN MOTOR CO., U.S.A.

    Voltage: Battery voltage 

  3. Refer to WIRING DIAGRAM  for Injectors.

OK or NG 

  1. OK: GO TO 6.
  2. NG: Perform DIAGNOSTIC PROCEDURE  .