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DTC Description
 
 
DTC DETECTION LOGIC
DTCM.U.T.-III SE screen terms
(Trouble diagnosis content)
DTC detecting condition
U2140-83CAN comm err (ECM)
[Controller area network communication error (engine control module)]
Diagnosis conditionIgnition switch: ON
SignalCAN communication signals
ThresholdCAN signal from ECM is unmatched between CAN signal and calculated value. (Due to noise on CAN)
Diagnosis delay time2 seconds or more
 
 
POSSIBLE CAUSE
  • CAN communication system
  • ECM
 
 
FAIL-SAFE
Although AWD control is canceled, the vehicle can drive at 2WD condition.
 
 
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.
: .
 
2.DTC REPRODUCTION PROCEDURE
With M.U.T.-III SE
  1. Turn the ignition switch ON.
  2. Drive at 10 km/h (6 MPH) or more for approximately 5 minutes in urban areas.
  3. Stop the vehicle.
  4. Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is DTC “U2140-83” detected?
Proceed to diagnosis procedure. Refer to Diagnosis Procedure.
-1To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident.
-2Confirmation after repair: INSPECTION END