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Home >> Infiniti >> 2011 >> M56 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 86 (Automatic Transaxle) >> DTC/Circuit Diagnosis >> DTC U1000: Can Comm Circuit >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

WARNING: This page is about a different car, the 2012 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.
DTC Trouble diagnosis name DTC is detected if... Possible cause
U1000 CAN Communication Line TCM is not transmitting or receiving CAN communication signal for 2 seconds or more:
  • Harness or connectors (CAN communication line is open or shorted.)
  • TCM
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