Nissan Leaf. Manual - part 120

AV

STEERING SWITCH

AV-471

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION WITH BOSE]

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STEERING SWITCH

Diagnosis Procedure

INFOID:0000000010122696

Regarding Wiring Diagram information, refer to 

AV-394, "Wiring Diagram"

.

1.

CHECK STEERING WHEEL AUDIO CONTROL SWITCH RESISTANCE

1. Turn power switch OFF.

2. Disconnect combination switch connector M112.

3. Check resistance between the terminals of combination switch connector M112.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace steering switches. Refer to 

AV-497, "Removal and Installation"

.

2.

CHECK COMBINATION SWITCH

Check continuity between combination switch connectors M112 and M92.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace spiral cable. Refer to 

SR-23, "Removal and Installation"

.

3.

CHECK HARNESS BETWEEN COMBINATION SWITCH AND AUDIO UNIT 

1. Disconnect AV control unit connector M100.

2. Check continuity between combination switch connector M92 and AV control unit connector M100.

Combination switch connector M112

Condition

Resistance 

Ω

(Approx.)

Terminal

Terminal

14

17

Depress SOURCE switch.

1

Depress  

switch.

121

Depress  

switch.

321

Depress  

switch.

723

Depress  

switch.

2023

15

Depress  

switch.

1

Depress  

switch.

121

Depress  

switch. 

321

Depress  

switch. 

723

Combination switch 

Continuity

Connector

Terminal

Connector

Terminal

M112

14

M92

24

Yes

15

31

17

33

AV-472

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION WITH BOSE]

STEERING SWITCH

3. Check continuity between combination switch connector M92 and ground.

Is the inspection result normal?

YES

>> Replace AV control unit. Refer to 

AV-488, "Removal and Installation"

.

NO

>> Repair or replace harness or connectors.

Combination switch

AV control unit 

Continuity

Connector

Terminal

Connector

Terminal

M92

24

M100

6

Yes

31

16

33

15

Combination switch

Ground

Continuity

Connector

Terminal

M92

24

—

No

31

33

AV

USB CONNECTOR

AV-473

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION WITH BOSE]

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USB CONNECTOR

Diagnosis Procedure

INFOID:0000000010122697

Regarding Wiring Diagram information, refer to 

AV-394, "Wiring Diagram"

.

1.

CHECK USB INTERFACE HARNESS CONTINUITY

1. Turn power switch OFF.

2. Disconnect AV control unit connector M107 and USB connector M53.

3. Check continuity between AV control unit connector M107 and USB connector M53.

4. Check continuity between AV control unit connector M107 and ground.

Is the inspection result normal?

YES

>> Replace the USB connector. Refer to 

AV-499, "Removal and Installation"

.

NO

>> Repair or replace harness or connectors.

AV control unit

USB 

Continuity

Connector

Terminal

Connector

Terminal

M107

78

M53

2

Yes

79

1

80

4

81

3

82

5

AV control unit

—

Continuity

Connector

Terminal

M107

78

Ground

No

80

AV-474

< SYMPTOM DIAGNOSIS >

[NAVIGATION WITH BOSE]

MULTI AV SYSTEM

SYMPTOM DIAGNOSIS

MULTI AV SYSTEM

Symptom Table

INFOID:0000000010122698

RELATED TO AUDIO

Symptoms

Check items

Probable malfunction location

The disk cannot be removed.

AV control unit

Malfunction in AV control unit.
Refer to 

AV-367, "On Board Diagnosis Function"

.

No sound comes out or the level of 
the sound is low.

No sound from all speakers.

• Speaker circuit shorted to ground.

Refer to 

AV-394, "Wiring Diagram"

.

• Bose amp. ON signal circuit malfunction.

Refer to 

AV-467, "Diagnosis Procedure"

.

• Bose speaker amp. power supply and ground cir-

cuits malfunction.
Refer to 

AV-453, "BOSE AMP. : Diagnosis Proce-

dure"

.

Only a certain speaker (front door 
speaker LH, front door speaker RH, 
tweeter LH, tweeter RH, rear door 
speaker LH, rear door speaker RH, sub-
woofer) does not output sound.

• Poor connector connection of speaker.
• Sound signal circuit malfunction between AV con-

trol unit and Bose speaker amp.
Refer to:

-

AV-456, "Diagnosis Procedure"

 (front door speak-

er).

-

AV-459, "Diagnosis Procedure"

 (tweeter).

-

AV-462, "Diagnosis Procedure"

 (rear door speak-

er).

-

AV-465, "Diagnosis Procedure"

 (subwoofer).

• Sound signal circuit malfunction between Bose 

speaker amp. and speaker.
Refer to:

-

AV-456, "Diagnosis Procedure"

 (front door speak-

er).

-

AV-459, "Diagnosis Procedure"

 (tweeter).

-

AV-462, "Diagnosis Procedure"

 (rear door speak-

er).

-

AV-465, "Diagnosis Procedure"

 (subwoofer).

• Malfunction in speaker.

Refer to:

-

AV-490, "Removal and Installation"

 (front door 

speaker).

-

AV-491, "Removal and Installation"

 (tweeter).

-

AV-492, "Removal and Installation"

 (rear door 

speaker).

-

AV-500, "Removal and Installation"

 (subwoofer).

• Malfunction in AV control unit.

Refer to 

AV-367, "On Board Diagnosis Function"

.

• Malfunction in Bose speaker amp.

Replace Bose speaker amp. Refer to 

AV-501, "Re-

moval and Installation"

.