With Surround Sound

B2721 CENTER SENSOR [RL]

DTC Logic


DTC DETECTION LOGIC








Diagnosis Procedure

Regarding Wiring Diagram information, refer to "Wiring Diagram" With Surround Sound.

1. CHECK REAR SONAR SENSOR LH INNER CIRCUIT CONTINUITY

1.Turn ignition switch OFF.
2.Disconnect sonar control unit connector and rear sonar sensor LH inner connector.
3.Check continuity between sonar control unit connector M70 and rear sonar sensor LH inner connector
B457.





4.Check continuity between sonar control unit connector M70 and ground.





Is the inspection result normal?
YES- GO TO 2.
NO- Repair or replace harness or connectors.

2. CHECK REAR SONAR SENSOR LH INNER SIGNAL CIRCUIT SHORT TO BATTERY

1.Turn ignition switch ON.
2.Check voltage between sonar control unit connector M70 and ground.





Is the inspection result normal?
YES- Replace rear sonar sensor LH inner. Refer to "Removal and Installation" With Surround Sound.
NO- Repair or replace harness or connectors.
Revision: March 20122013 Infiniti JX