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Diagnosis Procedure
1.CHECK REAR SONAR SENSOR SIGNAL LH OUTER CIRCUIT (OPEN)
  1. Turn ignition switch OFF.
  2. Disconnect sonar control unit connector and rear sonar sensor LH outer connector.
  3. Check continuity between sonar control unit harness connector and rear sonar sensor LH outer connector.
    Sonar control unitRear sonar sensor LH outerContinuity
    ConnectorTerminalConnectorTerminal
    B2022B4572Existed
Is the inspection result normal?
.
Repair the harness or connector.
 
2.CHECK REAR SONAR SENSOR LH OUTER GROUND CIRCUIT
Check continuity between sonar control unit harness connector and rear sonar sensor LH outer harness connector.
Sonar control unitRear sonar sensor LH outerContinuity
ConnectorTerminalConnectorTerminal
B2014B4573Existed
Is the inspection result normal?
Replace the rear sonar sensor LH outer. Refer to Removal and Installation.
Repair the harness or connector.