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DTC Description
 
 
DTC DETECTION LOGIC
DTC No.M.U.T.-III SE screen items
(Trouble diagnosis content)
DTC Detection Condition
U132754MAC key update
(Message Authentication Code key update)
Diagnosis condition-
Signal (terminal)-
ThresholdMAC key is not written after TCM replacement.
Diagnosis delay time-
 
 
POSSIBLE CAUSE
  • Writing of MAC key has not been executed
  • TCM
 
 
FAIL-SAFE
—
 
 
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
With M.U.T.-III SE
  1. Ignition switch ON.
  2. Perform “MAC Diagnosis” of “TRANSMISSION” using M.U.T.-III SE.
Is DTC U1327-54 detected as the current malfunction?
Refer to Diagnosis Procedure.
-1To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident.
-2Confirmation after repair: INSPECTION END