Hyundai Elantra (CN7): Audio / Audio Unit

Hyundai Elantra (CN7) 2021-2026 Service Manual / Body Electrical System / Audio / Audio Unit

Components and components location

Components

Audio

Connector Pin Information

No	Connector A	Connector B
1	Rear left speaker (+)	MM_CAN High
2	Front left speaker (+)	-
3	Front right speaker (+)	-
4	Rear right speaker (+)	Steering wheel remote
5	-	-
6	Door open	USB DATA (+)
7	IGN1	USB VOC
8	Illumination (+)	-
9	Detent	-
10	Rear left speaker (-)	Mic (+)
11	Front left speaker (-)	ACC
12	Front right speaker (-)	B+
13	Rear right speaker (-)	MM_CAN Low
14	-	-
15	-	-
16	-	Vehicle Speed
17	Illumination (-)	Steering wheel remote GND
18	-	USB DATA (-)
19		USB GND
20		-
21		-
22		Mic (-)
23		-
24		GND

[Display Audio]

Connector Pin Information

No	Connector A (Int AMP)	Connector A (Ext AMP)	Connector B
1	Rear left speaker (+)	-	-
2	Reart left speaker (-)	-	MIC Signal (+)
3	-	AMP Navi Voice (+)	-
4	-	AMP SPDIF (HI)	-
5	-	-	Antenna Powr
6	Camera Power	Camera Power	ILL (+)
7	Camera Video	Camera Video	MM CAN (HI)
8	-	-	-
9	-	-	-
10	-	-	B+
11	-	-	B+
12	Steering wheel remote	Steering wheel remote	GND
13	Front lift speaker (+)	-	GND
14	Front lift speaker (-)	-	MIC GND
15	Front right speaker (-)	-	MIC Signal (-)
16	Front right speaker (+)	-	-
17	-	AMP Navi Voice (-)	-
18	-	AMP SPDIF (LOW)	-
19	-	AMP SPDIF GND	-
20	Camera Power GND	Camera Power GND	MM CAN (LOW)
21	Camera Video GND	Camera Video GND	-
22	-	-	ACC
23	-	-	-
24	-	-	-
25	-	-	-
26	Steering wheel remote GND	Steering wheel remote GND	-
27	Rear right speaker (-)	-	-
28	Rear right speaker (+)	-	-
29	-	-	-
30	-	-	-
31	-	-	-
32	-	-	-
33	-	-	IGN 1
34	-	-	-
35	-	-	-
36	-	-
37	-	-
38	Speed	Speed

Repair procedures

Removal

•	Take care not to scratch the cluster fascia panel and related parts.

•	Wrap the protective tape on the tool to disassemble with the screwdriver or remover.

•	Use caution in keeping and handling during disassembling/assembling because it is easily contaminated with lubricant and oil.

1.	Disconnect the negative (-) battery terminal.

2.	Using a flat-tip screwdriver or remover, remove the photo sensor cover (A).

3.	Disconnect photo sensor connector and security sensor connector (A).

4.	Using a flat-tip screwdriver or remover, remove the cluster fascia upper garnish (A).

5.	Remove the cluster fascia side panel (A) after mounting screws.

6.	Remove the cluster fascia panel (A) after loosening mounting screws.

7.	Remove the audio head unit (A) after loosening the screws.

8.	Remove the audio head unit after disconnecting the connectors and cable (A).

Installation

1.	Connect the audio unit connectors and cable.

2.	Install the audio head unit.

3.	Install the cluster fascia panal.

4.	Install the cluster fascia side panal.

5.	Install the cluster fascia upper garnish.

6.	Install the photo sensor cover.

Connect the negative (-) battery terminal.

•	Make sure the connector are connected in properly.

•	Check the audio system.

❮Specifications

SpecificationsAudio Items AUDIO ModelRADIO/MP3Power supplyDC 14.4VParasitic currentMax 21W X 4Antenna80PF 75ΩTuning typePLL SYNTHESIZED TUNING

Speakers❯

Repair procedures Inspection1.Troubleshooting for Speaker(1)Basic inspection of speakerInspect the sound from speaker after verifying that the speaker mounting screws is removed and the wiring connector is connected precisely to remove vibration transmitted from body trims and surrounding parts.

Other information:

Hyundai Elantra (CN7) 2021-2026 Service Manual: Troubleshooting

TroubleshootingWireless Power Charger System Troubleshooting Trouble status Inspection item Inspection Not chargedCheck the mobile phone status R-1Amber LED blinks OvercurrentR-2OverheatingR-2Foreign matterR-2R-1.

Hyundai Elantra (CN7) 2021-2026 Service Manual: In-car Sensor