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Diagnosis Procedure
1.PERFORM MAC KEY WRITING
With M.U.T.-III SE
  1. Perform “MAC key writing”. Refer to Description.
  2. Perform “MAC Diagnosis” of “SONAR” using M.U.T.-III SE.
Is DTC U1327-54 detected as the current malfunction?
.
INSPECTION END
 
2.PERFORM MAC KEY WRITING AGAIN (SECOND TIMES)
With M.U.T.-III SE
  1. Restart M.U.T.-III SE.
  2. Perform “MAC Key writing” again. Refer to Description.
  3. Perform “MAC Diagnosis” of “SONAR” using M.U.T.-III SE.
Is DTC U1327-54 detected as the current malfunction?
.
INSPECTION END
 
3.PERFORM MAC KEY WRITING AGAIN (THIRD TIMES)
With M.U.T.-III SE
  1. Restart M.U.T.-III SE.
  2. Perform “MAC Key writing” again. Refer to Description.
  3. Perform “MAC Diagnosis” of “SONAR” using M.U.T.-III SE.
Is DTC U1327-54 detected as the current malfunction?
Replace sonar control unit. Refer to Removal and Installation.
INSPECTION END