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Home >> Infiniti >> 2009 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0327 To P0850 >> DTC P0603: ECM Power Supply >> DTC Confirmation Procedure

DTC Confirmation Procedure

  1. If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next step.
    1. Turn ignition switch OFF and wait at least 10 seconds.
    2. Turn ignition switch ON.
    3. Turn ignition switch OFF and wait at least 10 seconds.
  2. Start engine and let it idle for 1 second.
  3. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
  4. Repeat steps  1 and  2 for 4 times.
  5. Check 1st trip DTC.
  6. If 1st trip DTC is detected, go to "DIAGNOSIS PROCEDURE ".
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