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Diagnosis Procedure
1.CHECK REAR SONAR SENSOR SIGNAL LH OUTER CIRCUIT (1)
  1. Turn ignition switch OFF.
  2. Disconnect sonar control unit connector and rear sonar sensor LH outer connector.
  3. Turn ignition switch ON.
  4. Check voltage between sonar control unit harness connector and ground.
    Sonar control unit(-)Voltage (Approx. )
    ConnectorTerminal
    B2022Ground0 V
Is the inspection result normal?
Repair harness or connector.
 
2.CHECK REAR SONAR SENSOR SIGNAL LH OUTER CIRCUIT (2)
  1. Turn ignition switch OFF.
  2. Check continuity between rear sonar sensor LH outer harness connector and ground.
Rear sonar sensor LH outerGroundContinuity
ConnectorTerminal
B4572Not existed
Is the inspection result normal?
Replace the rear sonar sensor LH outer. Refer to Removal and Installation.
Repair the harness or connector.