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Diagnosis Procedure
1.PERFORM DTC CONFIRMATION PROCEDURE AGAIN
With M.U.T.-III SE
  1. Turn ignition switch ON.
  2. Erase DTC.
  3. Perform DTC confirmation procedure again. Refer to DTC Description.
Is DTC B2721-49 detected again?
Replace sonar control unit. Refer to Removal and Installation.
INSPECTION END