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Diagnosis Procedure
1.CHECK REAR SONAR SENSOR SIGNAL RH SIDE CIRCUIT (OPEN)
  1. Turn ignition switch OFF.
  2. Disconnect sonar control unit connector and rear sonar sensor RH side connector.
  3. Check continuity between sonar control unit harness connector and rear sonar sensor RH side connector.
    Sonar control unitRear sonar sensor RH sideContinuity
    ConnectorTerminalConnectorTerminal
    B4950B4642Existed
Is the inspection result normal?
.
Repair the harness or connector.
 
2.CHECK REAR SONAR SENSOR RH SIDE GROUND CIRCUIT
Check continuity between sonar control unit harness connector and rear sonar sensor RH side harness connector.
Sonar control unitRear sonar sensor RH sideContinuity
ConnectorTerminalConnectorTerminal
B2014B4643Existed
Is the inspection result normal?
Replace the rear sonar sensor RH side. Refer to Removal and Installation.
Repair the harness or connector.