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Diagnosis Procedure
1.CHECK REAR SONAR SENSOR SIGNAL RH INNER CIRCUIT (OPEN)
  1. Turn ignition switch OFF.
  2. Disconnect sonar control unit connector and rear sonar sensor RH inner connector.
  3. Check continuity between sonar control unit harness connector and rear sonar sensor RH inner connector
    Sonar control unitRear sonar sensor RH innerContinuity
    ConnectorTerminalConnectorTerminal
    B209B4582Existed
Is the inspection result normal?
.
Repair the harness or connector.
 
2.CHECK REAR SONAR SENSOR RH INNER GROUND CIRCUIT
Check continuity between sonar control unit harness connector and rear sonar sensor RH inner harness connector.
Sonar control unitRear sonar sensor RH innerContinuity
ConnectorTerminalConnectorTerminal
B2014B4583Existed
Is the inspection result normal?
.
Repair the harness or connector.
 
3.CHECK REAR SONAR SENSOR SIGNAL RH INNER
  1. Connect sonar control unit connector and rear sonar sensor RH inner connector.
  2. Turn ignition switch ON.
  3. Check the signal between sonar control unit terminals as per the following condition.
    +−ConditionVoltage
    Sonar control unit
    ConnectorTerminalConnectorTerminal
    B209B2014
    • Shift position is in R position.
    • When the sensor is detecting an obstacle
Is the inspection result normal?
Replace the sonar control unit. Refer to Removal and Installation.
Replace the rear sonar sensor RH inner. Refer to Removal and Installation.