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Home >> Infiniti >> 2008 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - DTCS P1148 To P2A03 >> DTC P1568: ICC Function >> On Board Diagnosis Logic
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On Board Diagnosis Logic

NOTE:
  • If DTC P1568 is displayed with DTC U1000, U1001, first perform the trouble diagnosis for DTC U1000, U1001. Refer to "ON BOARD DIAGNOSIS LOGIC ".
  • If DTC P1568 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to "ON BOARD DIAGNOSIS LOGIC ".
  • If DTC P1568 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to "ON BOARD DIAGNOSIS LOGIC ".
DTC DETECTING CONDITION CHART

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1568
1568
ICC function ECM detects a difference between signals from ICC unit is out of specified range.
  • Harness or connectors (The CAN communication line is open or shorted.)
  • ICC unit
  • ECM