Nissan Altima L32. Manual - part 10

AV-32

< COMPONENT DIAGNOSIS >

[BASE AUDIO]

REAR SPEAKER

REAR SPEAKER

Description

INFOID:0000000004206379

The audio unit sends audio signals to the rear speakers using the rear speaker circuits.

Diagnosis Procedure

INFOID:0000000004206380

1.

HARNESS CHECK

1. Disconnect audio unit connector M43 (A) and suspect speaker

connector.

2. Check continuity between audio unit harness connector M43 (A)

and suspect speaker harness connector (B).

3. Check continuity between audio unit harness connector M43 (A)

and ground.

Are the continuity results as specified?

YES

>> GO TO 2

NO

>> • Check connector housings for disconnected or loose terminals.

• Repair harness or connector.

2.

REAR SPEAKER SIGNAL CHECK

A

B

Continuity

Connector

Terminal

Connector

Terminal

M43

4

B26

1

Yes

5

2

13

B44

1

14

2

A

—

Continuity

Connector

Terminal

M43

4

Ground

No

5

13

14

AWNIA0033ZZ

AV

REAR SPEAKER

AV-33

< COMPONENT DIAGNOSIS >

[BASE AUDIO]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

1. Connect audio unit connector and rear tweeter connector.

2. Turn ignition switch to ACC.

3. Push “POWER” switch.

4. Check the signal between audio unit harness connector termi-

nals with CONSULT-III or oscilloscope.

Is the audio signal voltage as specified?

YES

>> Replace rear speaker. Refer to 

AV-75, "Removal and

Installation - Coupe"

.

NO

>> Replace audio unit. Refer to 

AV-72, "Removal and

Installation"

.

(+)

(-)

Condition

Reference

signal

Connec-

tor

Terminal

Terminal

M43

4

5

Receive 
audio sig-
nal

13

14

AWNIA0034ZZ

SKIA0177E

AV-34

< COMPONENT DIAGNOSIS >

[BASE AUDIO]

STEERING SWITCH

STEERING SWITCH

Description

INFOID:0000000004206381

When one of the steering wheel audio control switches is pushed, the resistance in steering switch circuit

changes depending on which button is pushed.

Diagnosis Procedure

INFOID:0000000004206382

1.

CHECK STEERING SWITCH RESISTANCE

1. Disconnect steering switch connector M88.

2. Check resistance between steering switch connector terminals.

Do the steering switches check OK?

YES

>> GO TO 2

NO

>> Replace steering switch. Refer to 

AV-225, "Removal and Installation"

.

2.

CHECK HARNESS

1. Turn ignition switch OFF.

2. Disconnect audio unit connector M43 and spiral cable connector

M30.

3. Check continuity between audio unit harness connector M43 (A)

and spiral cable harness connector M30 (B).

4. Check continuity between audio unit connector M43 (A) and ground.

Are the continuity results as specified?

YES

>> GO TO 3

NO

>> Repair harness.

3.

SPIRAL CABLE CHECK

Terminal

Signal name

Condition

Resistance 

(

Ω)

(Approx.)

15

17

Seek (down)

Depress (station) down switch.

165

Volume (down)

Depress volume down switch.

487

14

Seek (up)

Depress (station) up switch.

165

Source

Depress source switch.

0

Volume (up)

Depress volume up switch.

487

AWNIA0035ZZ

A

B 

Continuity

Connector

Terminal

Connector

Terminal

M43

6

M30

31

Yes

16

24

15

33

A

—

Continuity

Connector

Terminal

M43

6

Ground

No

15

16

AWNIA0036ZZ

AV

STEERING SWITCH

AV-35

< COMPONENT DIAGNOSIS >

[BASE AUDIO]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

1. Disconnect spiral cable connector M88.

2. Check continuity between spiral cable harness connector M30

(A) and M88 (B).

Does the spiral cable check OK?

YES

>> Inspection End.

NO

>> Replace spiral cable. Refer to 

SR-8, "Removal and Installation"

.

A

B

Continuity

Connector

Terminal

Connector

Terminal

M30

24

M88

14

Yes

31

15

33

17

ALNIA0931GB