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Diagnosis Procedure
1.CHECK REAR SONAR SENSOR SIGNAL LH SIDE CIRCUIT (1)
  1. Turn ignition switch OFF.
  2. Disconnect sonar control unit connector and rear sonar sensor LH side connector.
  3. Turn ignition switch ON.
  4. Check voltage between sonar control unit harness connector and ground.
    Sonar control unit(-)Voltage (Approx. )
    ConnectorTerminal
    B4949Ground0 V
Is the inspection result normal?
Repair harness or connector.
 
2.CHECK REAR SONAR SENSOR SIGNAL LH SIDE CIRCUIT (2)
  1. Turn ignition switch OFF.
  2. Check continuity between rear sonar sensor LH side harness connector and ground.
Rear sonar sensor LH sideGroundContinuity
ConnectorTerminal
B4632Not existed
Is the inspection result normal?
Replace the rear sonar sensor LH side. Refer to Removal and Installation.
Repair the harness or connector.