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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?
.
Repair the harness or connector.
 
3.CHECK REAR SONAR SENSOR SIGNAL RH SIDE
  1. Connect sonar control unit connector and rear sonar sensor RH side 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
    B4950B2014
    • 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 side. Refer to Removal and Installation.