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SN-164 < DTC/CIRCUIT DIAGNOSIS > [WITH PARK ASSIST] B2721-12 CENTER SENSOR [RL] B2721-12 CENTER SENSOR [RL] DTC Description INFOID:0000000010736653 DTC DETECTION LOGIC POSSIBLE CAUSE • Harness or connectors (Center sensor rear LH circuit) 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 B2721-12 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:0000000010736654 1. CHECK CENTER SENSOR SIGNAL REAR LH CIRCUIT FOR SHORT (1) 1. Turn ignition switch OFF. 2. Disconnect sonar control unit harness connector and center sensor rear LH harness connector. 3. Turn ignition switch ON. 4. Check the voltage between sonar control unit harness connector and ground. Is the inspection result normal? YES >> GO TO 2. NO >> Repair or replace malfunctioning parts. 2. CHECK CENTER SENSOR SIGNAL REAR LH CIRCUIT FOR SHORT (2) Check the continuity between center sensor rear LH harness connector and ground. DTC Trouble diagnosis (Trouble diagnosis contents) Detecting condition B2721-12 CENTER SENSOR [RL] SHORT-BAT Short circuit to power supply is detected in harness between sonar Terminals Voltage (Approx.) (+) ( − ) Sonar control unit Connector Terminal B129 20 Ground 0 V |