Diagnosis Procedure
1.
CHECK REAR SONAR SENSOR SIGNAL LH inner CIRCUIT (SHORT)
Turn ignition switch OFF.
Disconnect sonar control unit connector and rear sonar sensor signal LH inner connector.
Check continuity between sonar control unit harness connector and ground.
Sonar control unit
Ground
Continuity
Connector
Terminal
B20
21
Not existed
Is the inspection result normal?
Replace the rear sonar sensor signal LH inner. Refer to
Removal and Installation
.
Repair the harness or connector.
![[Previous]](../../../buttons/fprev.png)
![[Next]](../../../buttons/fnext.png)
Replace the rear sonar sensor signal LH inner. Refer to Removal and Installation
. 
Repair the harness or connector.