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DTC Description
 
 
DTC DETECTION LOGIC
DTCM.U.T.-III SE screen terms
(Trouble diagnosis content)
DTC detection condition
U010000LOST COMM (ECM A)
(Lost Communication With ECM/PCM A)
Diagnosis conditionWhen the ignition switch is ON
SignalCAN communication signal
ThresholdTCM is unable to receive the CAN communications signal from ECM
Diagnosis delay time2 seconds
 
 
POSSIBLE CAUSE
  • ECM
  • TCM
  • Harness or connector (CAN communication line is open or shorted)
 
 
FAIL-SAFE
  • Selector shock is large
  • Start is slow
  • Acceleration is slow
  • Lock-up is not performed
 
 
DTC CONFIRMATION PROCEDURE
1.PREPARATION BEFORE WORK
If another “DTC CONFIRMATION PROCEDURE” occurs just before, the ignition switch is OFF and wait for at least 10 seconds, then perform the next test.
: .
 
2.PERFORM DTC CONFIRMATION PROCEDURE
  1. Start the engine and wait for at least 5 seconds.
  2. Check the DTC.
Is “U0100–00” detected?
Go to Diagnosis ProcedureDiagnosis Procedure.
-1To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident.
-2Confirmation after repair: INSPECTION END