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DTC Description
 
 
DTC DETECTION LOGIC
DTC No.M.U.T.-III SE screen terms
(Trouble diagnosis content)
DTC detection condition
U132754MAC key update
(Message Authentication Code key update)
Diagnosis condition—
Signal (terminal)—
ThresholdMAC key is not written after chassis control module replacement.
Diagnosis delay time—
 
 
POSSIBLE CAUSE
  • Writing of MAC key has not been executed
  • Chassis control module
 
 
FAIL-SAFE
The following functions are suspended.*
  • Brake auto hold function
  • Drive mode selector function
  • Innovative operation mode function
*: Depends on the DTC detection status
 
 
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
With M.U.T.-III SE
  1. Turn the electric motor switch ON.
  2. Perform “MAC Diagnosis” of “CHASSIS CONTROL” using M.U.T.-III SE.
Is DTC U1327-54 detected as the current malfunction?
Refer to Diagnosis ProcedureDiagnosis Procedure.
-1To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident.
-2Confirmation after repair: INSPECTION END