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Diagnosis Procedure
1.CHECK REAR SONAR SENSOR SIGNAL RH SIDE CIRCUIT (1)
  1. Turn ignition switch OFF.
  2. Disconnect sonar control unit connector and rear sonar sensor RH side connector.
  3. Turn ignition switch ON.
  4. Check voltage between sonar control unit harness connector and ground.
    Sonar control unit(-)Voltage (Approx. )
    ConnectorTerminal
    B4950Ground0 V
Is the inspection result normal?
Repair harness or connector.
 
2.CHECK REAR SONAR SENSOR SIGNAL RH SIDE CIRCUIT (2)
  1. Turn ignition switch OFF.
  2. Check continuity between rear sonar sensor RH side harness connector and ground.
Rear sonar sensor RH sideGroundContinuity
ConnectorTerminal
B4642Not existed
Is the inspection result normal?
.
Repair the harness or connector.
 
3.PERFORM DTC CONFIRMATION PROCEDURE AGAIN
With M.U.T.-III SE
  1. Turn ignition switch ON.
  2. Erase DTC.
  3. Perform DTC confirmation procedure again. Refer to DTC Description.
Is DTC B2731-88 detected again?
Replace the rear sonar sensor RH side. Refer to Removal and Installation.
INSPECTION END