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DTC Description
 
 
DTC DETECTION LOGIC
When ECM unable to transmit engine communication signal.
DTCM.U.T.-III SE screen terms
(Trouble diagnosis content)
DTC detection condition
U104000ENG COMM CIRCUIT
(Engine communication circuit)
Diagnosis conditionIgnition switch ON
Signal (terminal)Engine communication signal
ThresholdECM unable to transmit engine communication signal to generator
Diagnosis delay time—
 
 
POSSIBLE CAUSE
  • Harness or connectors (LIN communication circuit is open or shorted.)
  • ECM
 
 
FAIL-SAFE
Not applicable
 
 
DTC Confirmation Procedure
1.PRECONDITIONING
If another DTC Confirmation Procedure is conducted just before this procedure, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.
: .
 
2.PERFORM DTC CONFIRMATION PROCEDURE
  1. Turn ignition switch ON and wait at least 10 seconds.
  2. Check 1st trip DTC.
Is 1st trip DTC detected?
DTC Diagnosis Procedure
-1To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident.
-2Confirmation after repair: INSPECTION END