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SN-100 < DTC/CIRCUIT DIAGNOSIS > [WITHOUT PARK ASSIST] B272D-12 FRONT BUZZER B272D-12 FRONT BUZZER DTC Description INFOID:0000000010735606 DTC DETECTION LOGIC POSSIBLE CAUSE Harness between sonar control unit and buzzer (frontward) FAIL-SAFE • Obstacle detection function is stopped DTC CONFIRMATION PROCEDURE 1. PERFORM DTC CONFIRMATION PROCEDURE With CONSULT 1. Turn ignition switch ON. 2. Turn ignition switch OFF and wait at least 30 seconds. 3. Turn ignition switch ON and wait at least 30 seconds or more. 4. Select “Self Diagnostic Result” mode of “SONAR” using CONSULT. 5. Check DTC. Is DTC B272D-12 detected? YES >> Proceed to . NO-1 >> To check malfunction symptom before repair: Refer to GI-44, "Intermittent Incident" . NO-2 >> Confirmation after repair: INSPECTION END Diagnosis Procedure INFOID:0000000010735607 1. CHECK BUZZER (FRONTWARD) POWER SUPPLY CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect sonar control unit connector and buzzer (frontward) connector. 3. Turn ignition switch ON. 4. Check voltage between sonar control unit harness connector and ground. Is the inspection result normal? YES >> GO TO 2. NO >> Repair harness or connector. 2. CHECK BUZZER DRIVE SIGNAL CIRCUIT Check voltage between sonar control unit harness connector and ground. DTC Trouble diagnosis (Trouble diagnosis contents) Detection condition B272D-12 FRONT BUZZER SHORT-BAT A short circuit is detected in harness between sonar control unit and Sonar control unit Ground Reference value (Approx.) Connector Terminal B101 19 0 V |