Audio Unit Repair Procedures

Removal

Wear gloves to protect your hands.

Using a flat-tip screwdriver, wrap protective tape around the tip and apply protective tape around the relevant parts to prevent damage. Use a plastic panel removal tool to remove the interior trim parts so as not to damage the surface. Be careful not to bend or scratch the trim and panels.

1. 1
   Disconnect the negative (-) battery terminal.
2. 2
   Remove the center instrument panel (A) from the airbag.

   

3. 3
   Disconnect the connectors (A) from the center panel.

   

4. 4
   Remove the head unit (A) after loosening the mounting screws.

   

5. 5
   Disconnect the connectors and cable (A) from the head unit.

   

Installation

1. 1
   Connect the connectors and cable.
2. 2
   Install the head unit and center panel.
3. 3
   Connect the negative (-) battery terminal.

   Check if the connector is connected incorrectly. Check the audio system.

Inspection

1. Check the specified value of the AVN head unit connectors under the specified condition. Connector A

   No.	Name	Terminal Description	Condition	Specified condition
   A1	Rear Left Speaker (+)	Rear left speaker+	Vehicle communication required	Analog output
   A2	Front Left Speaker (+)	Front left speaker+	Vehicle communication required	Analog output
   A3	Front Right Speaker (+)	Front right speaker+	Vehicle communication required	Analog output
   A4	Rear Right Speaker (+)	Rear right speaker+	Vehicle communication required	Analog output
   A5	-	-	?	?
   A6	-	-	?	?
   A7	-	-	?	?
   A8	Illumination (+)	Vehicle dimmer +	Vehicle communication required	?
   A9	Latch	Latch	Vehicle communication required	?
   A10	Rear Left Speaker (-)	Rear left speaker-	Vehicle communication required	Analog output
   A11	Front Left Speaker (-)	Front left speaker-	Vehicle communication required	Analog output
   A12	Front Right Speaker (-)	Front right speaker-	Vehicle communication required	Analog output
   A13	Rear Right Speaker (-)	Rear right speaker-	Vehicle communication required	Analog output
   A14	-	-	?	?
   A15	-	-	?	?
   A16	-	-	?	?
   A17	Illumination (-)	Vehicle dimmer -	Vehicle communication required	?
   A18	External Antenna	Remote power supply for antenna	Battery on	9 V ~ 18 V

   
   Connector B

   No.	Name	Terminal Description	Condition	Specified condition
   B1	-	-	?	?
   B2	-	-	?	?
   B3	-	-	?	?
   B4	Steering Wheel Remote Control	Steering Wheel Remote Control	Steering wheel switch pressed	0.5 V ~ 3 V
   B5	-	-	?	?
   B6	USB D (+)	USB D+	USB device inserted	3.2 V ~ 3.45 V
   B7	USB/iPod VDD	USB/iPod power	USB/iPod device inserted	4.9 V ~ 5.1 V
   B8	AUX R Input	AUX right audio signal	Audio playback on external auxiliary device (when using Aux connector)	Signal synchronized with audio is output.
   B9	Auxiliary Ground	AUX reference ground	Always	Below 1 ohm
   B10	Microphone (+) (Bluetooth)	Bluetooth microphone +	Input voice signal through microphone	Waveform synchronized with voice data through microphone
   B11	ACC	Accessory	Engine switch on (ACC)	11 V ~ 14 V
   B12	Battery (+)	Battery	Always	11 V ~ 14 V
   B13	-	-	?	?
   B14	-	-	?	?
   B15	-	-	?	?
   B16	Vehicle Speed	Vehicle speed sensor signal	Engine switch on (IGN), vehicle moving slowly	Approx. 5 V level pulse generation
   B17	Remote control ground	Steering wheel remote control Gnd	Always	Below 1 ohm
   B18	USB D (-)	USB D-	USB device inserted	3.2 V ~ 3.45 V
   B19	USB/iPod Ground	iPod detection line	iPod device inserted	GROUND
   B20	AUX Detection	AUX input signal detection	Auxiliary device inserted	0 V (low) > 5 V (high)
   B21	AUX Left Input	AUX left audio signal	Audio playback on external auxiliary device (when using Aux connector)	Signal synchronized with audio is output.
   B22	Microphone (-) (Bluetooth)	Bluetooth microphone-	Input voice signal through microphone	Waveform synchronized with voice data through microphone
   B23	-	-	?	?
   B24	Power Ground	Ground	Always	Below 1 ohm