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Diagnosis Procedure
1.PERFORM CONFIRMATION PROCEDURE AGAIN
With M.U.T.-III SE
  1. Turn electric motor switch ON.
  2. Erase DTC.
  3. Turn electric motor switch ON and wait at least 30 seconds or more.
  4. Perform confirmation procedure again. Refer to DTC Description.
Is DTC "B1328‐13" detected again?
Check the intermittent incident, Refer to Intermittent IncidentIntermittent Incident.
 
2.CHECK MICROPHONE SIGNAL CIRCUITS
  1. Turn electric motor switch OFF.
  2. Disconnect AV control unit harness connector and microphone harness connector.
  3. Check the continuity between AV control unit harness connector and microphone harness connector.
    AV control unitMicrophoneContinuity
    ConnectorTerminalConnectorTerminal
    M10240R2045Existed
  4. Check the continuity between AV control unit harness connector and ground.
    AV control unitGroundContinuity
    ConnectorTerminal
    M10240Not existed
Is the inspection result normal?
Replace AV control unit. Refer to Removal and Installation.
Repair or replace harness or connectors.