Nissan Quest E52. Manual - part 54

AV

MICROPHONE SIGNAL CIRCUIT

AV-95

< DTC/CIRCUIT DIAGNOSIS >

[DISPLAY AUDIO]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

Is the inspection result normal?

YES

>> Replace TEL adapter unit. Refer to 

AV-118, "Removal and Installation"

.

NO

>> Replace microphone. Refer to 

AV-120, "Removal and Installation"

.

Probe

Condition

Standard

Reference value

(+)

(+)

TEL adapter unit

Connector

Terminal

Connector

Terminal

M138

7

M138

8

Give  a  voice.

Waveform according to 
voice is input.

PKIB5037J

AV-96

< DTC/CIRCUIT DIAGNOSIS >

[DISPLAY AUDIO]

CONTROL SIGNAL CIRCUIT

CONTROL SIGNAL CIRCUIT

Description

INFOID:0000000009651947

TEL adapter unit identifies the vehicle model according to the control signal and performs the control.

Diagnosis Procedure

INFOID:0000000009651948

1.

CHECK CONTINUITY CONTROL SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect TEL adapter unit connector.

3.

Check continuity between TEL adapter unit harness connector and ground.

Is the inspection result normal?

YES

>> Replace TEL adapter unit. Refer to 

AV-118, "Removal and Installation"

.

NO

>> Repair harness or connector.

TEL adapter unit

Ground

Standard

Reference value

(Approx.)

Connector

Terminals

M138

22

3.1 V or less

0 V

24

27

AV

STEERING SWITCH SIGNAL A CIRCUIT (STEERING SWITCH TO TEL ADAPT-

ER UNIT)

AV-97

< DTC/CIRCUIT DIAGNOSIS >

[DISPLAY AUDIO]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

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

Description

INFOID:0000000009651949

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

Diagnosis Procedure

INFOID:0000000009651950

1.

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

1.

Turn ignition switch OFF.

2.

Disconnect TEL adapter unit connector and spiral cable connector. 

3.

Check continuity between TEL adapter unit harness connector and spiral cable harness connector.

4.

Check continuity between TEL adapter unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK SPIRAL CABLE

Check spiral cable.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace spiral cable. Refer to 

SR-15, "Removal and Installation"

.

3.

CHECK TEL ADAPTER UNIT VOLTAGE

1.

Connect TEL adapter unit connector and spiral cable connector.

2.

Turn ignition switch ON.

3.

Check voltage between TEL adapter unit harness connector.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace TEL adapter unit. Refer to 

AV-118, "Removal and Installation"

.

4.

CHECK STEERING SWITCH

1.

Turn ignition switch OFF.

2.

Check steering switch. Refer to 

AV-98, "Component Inspection"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace steering wheel. Refer to 

ST-12, "Removal and Installation"

.

TEL adapter unit

Spiral cable

Continuity

Connector

Terminal

Connector

Terminal

M138

12

M33

24

Existed

TEL adapter unit

Ground

Continuity

Connector

Terminal

M138

12

Not existed

Probe

Standard

Voltage

(Approx.)

(+)

(

−

)

TEL adapter unit

Connector

Terminal

Connector

Terminal

M138

12

M138

14

0 - 5.25 V

5.0 V

AV-98

< DTC/CIRCUIT DIAGNOSIS >

[DISPLAY AUDIO]

STEERING SWITCH SIGNAL A CIRCUIT (STEERING SWITCH TO TEL ADAPT-

ER UNIT)

Component Inspection

INFOID:0000000009651951

Measure the resistance between the steering switch connector terminals 14 to 17 and 15 to 17.

Standard

Between terminals 14 and 17

 

 switch ON

: 708 – 737 

Ω

MENU DOWN switch ON

: 314 – 327 

Ω

MENU UP switch ON

: 118 – 123 

Ω

SOURCE switch ON

: Less than 1 

Ω

Between terminals 15 and 17

 switch ON

: 314 – 327 

Ω

VOL UP switch ON

: 118 – 123 

Ω

VOL DOWN switch ON

: Less than 1 

Ω

JSNIA0216GB