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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?
.
Repair the harness or connector.
 
3.CHECK REAR SONAR SENSOR SIGNAL LH OUTER
  1. Connect sonar control unit connector and rear sonar sensor LH outer 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
    B2022B2014
    • 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 LH outer. Refer to Removal and Installation.