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DTC Description
 
 
DTC DETECTION LOGIC
DTCM.U.T.-III SE screen terms
(Trouble diagnosis content)
DTC detection condition
U214F57CAN comm err (BCM)
[CAN comm err (BCM)]
Diagnosis condition—
Signal (terminal)—
ThresholdMAC communication error
Diagnosis delay time—
83Diagnosis conditionIgnition switch ON
Signal (terminal)CAN communication signal
ThresholdECM is not transmitting or receiving CAN communication signal other than OBD (emission related diagnosis).
Diagnosis delay time2 seconds or more
87Diagnosis conditionIgnition switch ON
Signal (terminal)CAN communication signal
ThresholdECM is not transmitting or receiving CAN communication signal other than OBD (emission related diagnosis).
Diagnosis delay time2 seconds or more
 
 
POSSIBLE CAUSE
 
 
U214F-57
  • MAC communication error
  • ECM used in other vehicles is installed in the vehicle
  • ECM
 
 
U214F-83,87
  • Harness or connectors (CAN communication line is open or shorted)
  • BCM
 
 
FAIL-SAFE
Not applicable
 
 
DTC CONFIRMATION PROCEDURE
 
 
U214F-57
1.CHECK DTC PRIORITY
If DTC U214F is displayed with DTC U1327, first perform the trouble diagnosis for DTC U1327.
Is DTC U1327 detected?
Proceed to DTC Description.
.
 
2.CHECK MAC DIAGNOSIS
With M.U.T.-III SE
  1. Ignition switch ON.
  2. Perform “MAC Diagnosis” mode of “ENGINE” using M.U.T.-III SE.
Is DTC U214F detected?
Refer to Diagnosis Procedure.
-1To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident.
-2Confirmation after repair: INSPECTION END
 
 
 
U214F-83,87
1.CHECK DTC PRIORITY
If DTC U214F is displayed with DTC P0607, first perform the confirmation procedure (trouble diagnosis) for DTC P0607.
Is DTC P0607 detected?
Proceed to DTC Description.
.
 
2.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
  1. Turn ignition switch OFF and wait at least 10 seconds.
  2. Turn ignition switch ON.
  3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.
: .
 
3.PERFORM DTC CONFIRMATION PROCEDURE
  1. Turn ignition switch ON and wait at least 3 seconds.
  2. Check 1st trip DTC.
Is DTC U214F detected?
Refer to Diagnosis Procedure.
-1To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident.
-2Confirmation after repair: INSPECTION END