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Home >> Infiniti >> 2003 >> QX4 4WD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0605: Engine Control Module Malfunction >> Diagnostic Procedure
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Diagnostic Procedure

  1. If using CONSULT-II, go to next step. If using generic scan tool, go to step  3.
  2. Turn ignition on. Select SELF-DIAG RESULTS mode with CONSULT-II. Press ERASE. Repeat DTC CONFIRMATION TEST . If 1st trip DTC is detected, replace ECM. See ENGINE CONTROL MODULE REPLACEMENT  under ENGINE CONTROL MODULE. If 1st trip DTC is not detected, test is complete.
  3. Turn ignition on. Select MODE 4 with scan tool. Press ERASE. Repeat DTC CONFIRMATION TEST . If 1st trip DTC is detected, replace ECM. See ENGINE CONTROL MODULE REPLACEMENT  under ENGINE CONTROL MODULE. If 1st trip DTC is not detected, test is complete.
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