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Diagnosis Procedure
1.CHECK FUSE
  1. Turn the electric motor switch OFF.
  2. Check that the following fuse is not blown (open)
    Power sourceFuse No.Capacity
    Battery#2520 A
Is the fuse blown (open)?
Replace fuse after repairing the applicable circuit.
.
 
2.CHECK AV CONTROL UNIT BATTERY POWER SUPPLY
  1. Turn the electric motor switch OFF.
  2. Disconnect AV control unit harness connector.
  3. Check the voltage between AV control unit harness connector and ground.
    Without BOSE
    (+)(−)Voltage
    AV control unit
    ConnectorTerminal
    M10119GroundBattery voltage
    With BOSE
    (+)(−)Voltage
    AV control unit
    ConnectorTerminal
    M12119GroundBattery voltage
Is the inspection result normal?
.
Perform trouble diagnosis for battery power supply circuit.
 
3.CHECK GROUND CIRCUIT
  1. Turn the electric motor switch OFF.
  2. Check the continuity between AV control unit and ground.
    Without BOSE
    (+)(−)Continuity
    AV control unit
    ConnectorTerminal
    M10120GroundExisted
    With BOSE
    (+)(−)Continuity
    AV control unit
    ConnectorTerminal
    M12120GroundExisted
Is the inspection result normal?
INSPECTION END
Repair or replace malfunctioning parts.