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Diagnosis Procedure
1.CHECK FRONT SONAR SENSOR SIGNAL LH INNER CIRCUIT (OPEN)
  1. Turn ignition switch OFF.
  2. Disconnect sonar control unit connector and front sonar sensor LH inner connector.
  3. Check continuity between sonar control unit harness connector and front sonar sensor LH inner connector
    Sonar control unitFront sonar sensor LH innerContinuity
    ConnectorTerminalConnectorTerminal
    B202E3052Existed
Is the inspection result normal?
.
Repair the harness or connector.
 
2.CHECK FRONT SONAR SENSOR LH INNER GROUND CIRCUIT
Check continuity between sonar control unit harness connector and front sonar sensor LH inner harness connector.
Sonar control unitFront sonar sensor LH innerContinuity
ConnectorTerminalConnectorTerminal
B2013E3053Existed
Is the inspection result normal?
.
Repair the harness or connector.
 
3.CHECK FRONT SONAR SENSOR SIGNAL LH INNER
  1. Connect sonar control unit connector and front sonar sensor LH 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
    B202B2013
    • 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 front sonar sensor LH inner. Refer to Removal and Installation.