LEMON Manuals: Even more car manuals for everyone
Home >> Infiniti >> 2012 >> G37 IPL, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 77 (Engine Control System - DTCS U0101 Through P0153 (Sedan)) >> DTC U1003: Can Comm Circuit >> DTC Logic >> DTC Detection Logic

DTC Detection Logic

WARNING: This page is about a different variant/trim than selected.
NOTE: If DTC U1003 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607.
Refer to "DTC LOGIC ".
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
U1003 Lost communication with VVEL control module CAN communication signal other than OBD (emission related diagnosis) is not received between VVEL control module and ECM for 2 seconds or more.
  • Harness or connectors (VVEL CAN communication line is open or shorted)
  • ECM
  • VVEL control module