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DTC Description
 
 
DESCRIPTION
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.
 
 
DTC DETECTION LOGIC
DTCM.U.T.-III SE screen terms
(Trouble diagnosis content)
DTC detection condition
U010100LOST COMM (TCM)
(Lost Communication with TCM)
Diagnosis conditionIgnition switch ON
Signal (terminal)CAN communication signal
ThresholdECM is not transmitting or receiving CAN communication signal of OBD (emission-related diagnosis) with TCM
Diagnosis delay time2 seconds or more
 
 
POSSIBLE CAUSE
Harness or connectors (CAN communication line is open or shorted)
 
 
FAIL-SAFE
Not applicable
 
 
DTC Confirmation Procedure
1.PERFORM DTC CONFIRMATION PROCEDURE
  1. Turn ignition switch ON and wait at least 3 seconds.
  2. Check DTC.
Is DTC detected?
Proceed to DTC Diagnosis Procedure.
-1To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident.
-2Confirmation after repair: INSPECTION END