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Diagnosis Procedure
1.CHECK TEL VOICE SIGNAL CIRCUIT
  1. Turn the electric motor switch OFF.
  2. Disconnect AV control unit and TCU harness connector.
  3. Turn the electric motor switch ON.
  4. Check the voltage between AV control unit harness connector and ground.
    (+)(−)Voltage
    (Approx.)
    AV control unit
    ConnectorTerminal
    M102*1
    M124*2
    		32Ground0 V
    52
    *1: Without BOSE
    *2: With BOSE
Is the inspection result normal?
Replace AV control unit. Refer to Removal and Installation.
Repair or replace harness or connector.