Geely Emgrand X7. Manual part — 504

11.2.6.4 Audio head unit can be turned on but the speakers are inoperative

Circuit diagram:

NL11-2009b

B

A

BA

BA

BA

AB

4

IP

2

2

DR

17

DR17

DR16

DR16

DR22

DR

2

2

DR

3

2

DR32

DR06

DR06

BA

DR07

DR07

3

IP

22

8
IP
2

2

7
IP
22

2
IP
22

1
IP
22

5

IP

22

6

IP

2

2

FR-

右高音扬声器

右前门扬声器

左后门扬声器

右后门扬声器

左前门扬声器

左高音扬声器

收放机

RL-

RL+

RP-

RP+

FL+

FL-

FR+

Diagnostic steps:

1

Operate the audio unit.

A. Operate the audio head unit master control panel,adjust the channel, so that front and rear and

left and right channels are in the middle.

Confirm whether all the speakers are inoperative?

2

Inspect audio output of the audio wire harness connector IP22 and the grounding
resistor.

No

Go to step 4

Yes

Right reardoor

speaker

Left rear door

speaker

Radio-cassette

player

Lefthigh-pitch speaker

Left front door

speaker

Right front door speaker

Righthigh-pitch speaker

2015

(a) Dismantle main host of sound

equipment.

(b) Disconnect audio main machine

harness connector IP22.

(c) Use multimeter to measure

resistance between all audio
output terminal of wire harness
connector IP22 of main host of
sound equipment and grounding.

Standard resistant value :10 KΩ or
higher

Confirm if the resistance conforms to
standard value.

NL11-2010b

7

5

3

1

2

8

6

4

IP22 收放机线束连接器2

7

5

3

1

2

8

6

4

3

Repair the short circuit fault between the audio head unit wire harness connector IP22
and the body grounding.

A. Confirm that the open circuit between Terminal 5 of the harness connector IP22 of the audio
unit and ground wire of the body is fixed.

Confirm whether the radio is working correctly.

4

Inspect the loudspeaker circuit that does not work.

A. Dismantle audio main machine

harness connector IP22

B. Measure the resistance of the

loudspeaker from the harness
connector IP22 with a universal
meter.

NL11-2010b

7

5

3

1

2

8

6

4

IP22 收放机线束连接器2

7

5

3

1

2

8

6

4

Yes

Go to step 8

No

Yes

The system is normal.

No

Go to step 8

IP22 Radio-cassette player

harness connector2

IP22Radio-cassette player

harness connector2

2016

Standard Resistance

Test speakers

Test terminal

Standard

resistance

Left rear speaker

Instrument harness connector IP22-No 8, 7

terminal

4Ω

Right rear loudspeakers

Instrument harness connector IP22-No 2, 1

terminal

4Ω

Left front door window

high pitch speaker

Instrument harness connector IP22-No 5, 6

terminal

2-3Ω

Driver door speaker

Instrument harness connector IP22-No 5, 6

terminal

2-3Ω

Right front door and

window high-pitch

speaker

Instrument harness connector IP22-No 4, 3

terminal

2-3Ω

Driver door speaker

Instrument harness connector IP22-No 4, 3

terminal

2-3Ω

Confirm whether the resistance is normal.

5

Inspect the open circuit fault between the loudspeaker circuits.

(a) Disconnect audio main machine

harness connector IP22.

(b) Disconnect the inoperative

speaker connector.

(c) According to the following items,

use multimeter to measure
connetor terminal of speaker
which doesn't work.

NL11-2011b

A

B

DR22/32 后扬声器线束连接器

Yes

Go to step 7

No

DR22/32rear speaker harness

connector

2017

NL11-2012b

DR07/17 前门高音扬声器线束连接器

A

B

A

B

NL11-2013b

A

B

DR06/16 前门扬声器线束连接器

Position Multimeter

connection

Specified

conditions

Left rear

speaker

Terminals A and B of door wire harness connector DR22 and
the instrument wire harness connector respectively
IP22 No. 7. 8 terminal

Less than 1 Ω

Right rear

loudspeakers

Terminals A and B of door wire harness connector DR32 and
the instrument wire harness connector respectively
IP22 No 1. 2 terminal

Less than 1 Ω

Left front door

window high

pitch speaker

Terminals A and B of door wire harness connector DR07 and
terminal No. 5 and 6 of instrument wire harness connector
IP22

Less than 1 Ω

Right front

door and

window

high-pitch

speaker

Terminals A and B of door wire harness connector DR17 and
terminal No. 4 and 3 of instrument wire harness connector
IP22

Less than 1 Ω

Driver door

speaker

Terminals A and B of door wire harness connector DR06 and
terminal No. 5 and 6 of instrument wire harness connector

Less than 1 Ω

DR07/17front doorhigh-pitch speaker

harness connector

DR06/16 front door speaker harness

connector

2018