Nissan Quest E52. Manual - part 56

AV

STEERING SWITCH SIGNAL A CIRCUIT (TEL ADAPTER UNIT TO AUDIO UNIT)

AV-103

< DTC/CIRCUIT DIAGNOSIS >

[DISPLAY AUDIO]

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STEERING SWITCH SIGNAL A CIRCUIT (TEL ADAPTER UNIT TO AUDIO
UNIT)

Description

INFOID:0000000009651958

• Transmits the steering switch signal to TEL adapter unit.
• Transmits the steering switch signal to audio unit via TEL adapter unit.

Diagnosis Procedure

INFOID:0000000009651959

1.

CHECK STEERING SWITCH SIGNAL A CIRCUIT (TEL ADAPTER UNIT TO AUDIO UNIT)

1.

Turn ignition switch OFF.

2.

Disconnect audio unit connector and TEL adapter unit connector.

3.

Check continuity between audio unit harness connector and TEL adapter unit harness connector.

4.

Check continuity between audio unit harness connector and ground.

Is inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK AUDIO UNIT VOLTAGE

1.

Connect audio unit connector and TEL adapter unit connector.

2.

Turn ignition switch ON.

3.

Check voltage between audio unit harness connector terminals.

Is inspection result normal?

YES

>> Replace TEL adapter unit. Refer to 

AV-118, "Removal and Installation"

.

NO

>> Replace audio unit. Refer to 

AV-112, "Removal and Installation"

.

Audio unit

TEL adapter unit

Continuity

Connector

Terminal

Connector

Terminal

M92

6

M138

17

Existed

Audio unit

Ground

Continuity

Connector

Terminal

M92

6

Not existed

Probe

Standard

Voltage

(Approx.)

(+)

(

−

)

Audio unit

Connector

Terminal

Connector

Terminal

M92

6

M92

15

0 - 3.4 V

3.3 V

AV-104

< DTC/CIRCUIT DIAGNOSIS >

[DISPLAY AUDIO]

STEERING SWITCH SIGNAL B CIRCUIT (TEL ADAPTER UNIT TO AUDIO UNIT)

STEERING SWITCH SIGNAL B CIRCUIT (TEL ADAPTER UNIT TO AUDIO
UNIT)

Description

INFOID:0000000009651960

• Transmits the steering switch signal to TEL adapter unit.
• Transmits the steering switch signal to audio unit via TEL adapter unit.

Diagnosis Procedure

INFOID:0000000009651961

1.

CHECK STEERING SWITCH SIGNAL B CIRCUIT (TEL ADAPTER UNIT TO AUDIO UNIT)

1.

Turn ignition switch OFF.

2.

Disconnect audio unit connector and TEL adapter unit connector.

3.

Check continuity between audio unit harness connector and TEL adapter unit harness connector.

4.

Check continuity between audio unit harness connector and ground.

Is inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK AUDIO UNIT VOLTAGE

1.

Connect audio unit connector and TEL adapter unit connector.

2.

Turn ignition switch ON.

3.

Check voltage between audio unit harness connector terminals.

Is inspection result normal?

YES

>> Replace TEL adapter unit. Refer to 

AV-118, "Removal and Installation"

.

NO

>> Replace audio unit. Refer to 

AV-112, "Removal and Installation"

.

Audio unit

TEL adapter unit

Continuity

Connector

Terminal

Connector

Terminal

M92

16

M138

18

Existed

Audio unit

Ground

Continuity

Connector

Terminal

M92

16

Not existed

Probe

Standard

Voltage

(Approx.)

(+)

(

−

)

Audio unit

Connector

Terminal

Connector

Terminal

M92

16

M92

15

0 - 3.4 V

3.3 V

AV

STEERING SWITCH SIGNAL GND CIRCUIT (TEL ADAPTER UNIT TO AUDIO 

UNIT)

AV-105

< DTC/CIRCUIT DIAGNOSIS >

[DISPLAY AUDIO]

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STEERING SWITCH SIGNAL GND CIRCUIT (TEL ADAPTER UNIT TO AU-
DIO UNIT)

Description

INFOID:0000000009651962

• Transmits the steering switch signal to TEL adapter unit.
• Transmits the steering switch signal to audio unit via TEL adapter unit.

Diagnosis Procedure

INFOID:0000000009651963

1.

CHECK STEERING SWITCH SIGNAL GROUND CIRCUIT (TEL ADAPTER UNIT TO AUDIO UNIT)

1.

Turn ignition switch OFF.

2.

Disconnect audio unit connector and TEL adapter unit connector.

3.

Check continuity between audio unit harness connector and TEL adapter unit harness connector.

Is inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK GROUND CIRCUIT

1.

Connect audio unit connector.

2.

Check continuity between audio unit harness connector and ground.

Is inspection result normal?

YES

>> Replace TEL adapter unit. Refer to 

AV-118, "Removal and Installation"

.

NO

>> Replace audio unit. Refer to 

AV-112, "Removal and Installation"

.

Audio unit

TEL adapter unit

Continuity

Connector

Terminal

Connector

Terminal

M92

15

M138

19

Existed

Audio unit

Ground

Continuity

Connector

Terminal

M92

15

Existed

AV-106

< SYMPTOM DIAGNOSIS >

[DISPLAY AUDIO]

AUDIO SYSTEM SYMPTOMS

SYMPTOM DIAGNOSIS

AUDIO SYSTEM SYMPTOMS

Symptom Table

INFOID:0000000009651964

AUDIO SYSTEM

RELATED TO USB

NOTE:
Check that there is no malfunction of USB equipment main body before performing a diagnosis.

iPod

®

 is a trademark of Apple inc., registered in the U.S. and other countries.

RELATED TO CAMERA

Symptoms

Check items

Possible malfunction location / Action to take

Audio unit does not start.

—

Audio unit power supply and ground circuit. Refer to 

AV-90, 

"AUDIO UNIT : Diagnosis Procedure"

.

Audio sound is not heard or vol-
ume is small.

Sound is not heard only from the 
specific places.

Sound signal circuit of malfunctioning system.

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

No sound from all speakers.

Audio unit power supply and ground circuit. Refer to 

AV-90, 

"AUDIO UNIT : Diagnosis Procedure"

.

Only a certain speaker (front right, 
front left, rear right, or rear left, etc.) 
does not output sound.

• Poor connector connection of speaker.
• Sound signal circuit malfunction between audio unit and 

speaker.

• Malfunction in speaker.
• Malfunction in audio unit.

Noise is mixed with audio. 

Noise comes out from all speakers.

Malfunction in audio unit.

Noise comes out only from a certain 
speaker (front right, front left, rear 
right, or rear left, etc.).

• Poor connector connection of speaker.
• Sound signal circuit malfunction between audio unit and 

speaker.

• Malfunction in speaker.
• Poor installation of speaker (e.g. backlash and looseness)
• Malfunction in audio unit.

Noise is mixed with radio only 
(when the car hits a bump or while 
driving over bad roads).

Poor connector connection of antenna or antenna feeder.

Radio is not received or poor re-
ception.

• Other audio sounds are normal.
• Any radio cannot be received or 

poor reception is caused even af-
ter moving to a service area with 
good reception (e.g. a place with 
clear view and no obstacles gen-
erating external noises). 

• Antenna amp. ON signal circuit malfunction.
• Poor connector connection of antenna or antenna feeder.    

Satellite radio is not received.

 It change to satellite radio mode.

• Antenna feeder (satellite radio)
• Satellite antenna (antenna base)

 It does not change to satellite radio 
mode.

Audio unit
Refer to 

AV-112, "Removal and Installation"

.

Symptoms

Check items

Possible malfunction location / Action to take

iPod

®

 or USB memory can not 

be recognized.

—

• USB harness malfunction.
• USB connector malfunction.