Toyota
Nissan Versa
 Sedan Service Manual
Electrical & power control » LAN System (LAN) » Trouble diagnosis
Condition of Error Detection

DTC (e.g. U1000 and U1001) of CAN communication is indicated on SELF-DIAG RESULTS on CONSULT if a CAN communication signal is not transmitted or received between units for 2 seconds or more.

CAN COMMUNICATION SYSTEM ERROR

  • CAN communication line open (CAN-H, CAN-L, or both)
  • CAN communication line short (ground, between CAN communication lines, other harnesses)
  • Error of CAN communication control circuit of the unit connected to CAN communication line

WHEN DTC OF CAN COMMUNICATION IS INDICATED EVEN THOUGH CAN COMMUNICATION SYSTEM IS NORMAL

  • Removal/installation of parts: Error may be detected when removing and installing CAN communication unit and related parts while turning the ignition switch ON. (A DTC except for CAN communication may be detected.)
  • Fuse blown out (removed): CAN communication of the unit may cease.
  • Voltage drop: Error may be detected if voltage drops due to discharged battery when turning the ignition switch ON (Depending on the control unit which carries out CAN communication).
  • Error may be detected if the power supply circuit of the control unit, which carries out CAN communication, malfunctions (Depending on the control unit which carries out CAN communication).
  • Error may be detected if reprogramming is not completed normally.

NOTE: CAN communication system is normal if DTC of CAN communication is indicated on SELF-DIAG RESULTS of CONSULT under the above conditions. Erase the memory of the self-diagnosis of each control unit.

    More about «Trouble diagnosis»:

    Condition of Error Detection

    Symptom When Error Occurs in CAN Communication System

    Self-Diagnosis

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