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DTC Description
 
 
DTC DETECTION LOGIC
DTCM.U.T.-III SE screen terms
(Trouble diagnosis content)
DTC detection condition
U225987CAN comm err (steering control unit)
[CAN comm err (steering control unit)]
Diagnosis 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
  • Harness or connectors (CAN communication line is open or shorted)
  • EPS control unit
 
 
FAIL-SAFE
Not applicable
 
 
DTC CONFIRMATION PROCEDURE
1.CHECK DTC PRIORITY
If DTC U2259 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 U2259 detected?
Refer to Diagnosis Procedure.
-1To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident.
-2Confirmation after repair: INSPECTION END