Nissan Pathfinder (2008 year). Manual — part 66

AV-368

< COMPONENT DIAGNOSIS >

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STEERING SWITCH

STEERING SWITCH

Description

INFOID:0000000001450648

When one of the steering wheel audio control switches is pushed, the resistance in the steering wheel audio
control switch circuit changes depending on which button is pushed.

Diagnosis Procedure

INFOID:0000000001450649

1.

CHECK STEERING WHEEL AUDIO CONTROL SWITCH RESISTANCE

1.

Turn ignition switch OFF.

2.

Disconnect steering wheel audio control switch connector M102.

3.

Check resistance between steering switch connector terminals.

Do the steering wheel audio control switches check OK?

YES

>> GO TO 2

NO

>> Replace steering wheel audio control switch. Refer to

AV-435, "Removal and Installation"

.

2.

CHECK HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect AV control unit connector M42 and spiral cable con-
nector M30.

3.

Check continuity between AV control unit harness connector
M42 (A) and spiral cable harness connector M30 (B).

4.

Check continuity between AV control unit connector M42 (A) and ground.

Are the continuity results as specified?

YES

>> GO TO 3

NO

>> Repair harness.

Terminal

Signal name

Condition

Resistance

(

Ω

)

(Approx.)

16

17

Seek (down)

Depress

switch.

165

Volume (down)

Depress VOL down switch.

487

Phone/Send

Depress

switch.

0

20

17

Seek (up)

Depress

switch.

165

Volume (up)

Depress VOL up switch.

487

Mode/End

Depress

switch.

0

WKIA4457E

A

B

Continuity

Connector

Terminal

Connector

Terminal

M42

6

M30

24

Yes

15

31

16

32

A

—

Continuity

Connector

Terminal

M42

6

Ground

No

15

16

ALNIA0332GB

AV

STEERING SWITCH

AV-369

< COMPONENT DIAGNOSIS >

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C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

3.

SPIRAL CABLE CHECK

1.

Disconnect spiral cable connector M102.

2.

Check continuity between spiral cable harness connector M30
(A) and M102 (B).

Does the spiral cable check OK?

YES

>> Inspection End.

NO

>> Replace spiral cable. Refer to

SR-6, "Removal and Installation"

.

Spiral cable

Continuity

Connector

Terminal

Connector

Terminal

M30

24

M102

20

Yes

31

17

32

16

ALNIA0333GB

AV-370

< COMPONENT DIAGNOSIS >

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MICROPHONE SIGNAL CIRCUIT

MICROPHONE SIGNAL CIRCUIT

Description

INFOID:0000000001450650

Voice signals are transmitted from the microphone to the AV control unit using the microphone signal circuits.

Diagnosis Procedure

INFOID:0000000001450651

1.

VERIFY MICROPHONE POWER AND GROUND SUPPLY

Check power and ground supply to the microphone. Refer to

AV-343, "MICROPHONE : Diagnosis Procedure"

.

Did the power and ground supply check OK?

YES

>> GO TO 2

NO

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

• Repair harness or connector.

2.

CHECK HARNESS BETWEEN AV CONTROL UNIT AND MICROPHONE

1.

Turn ignition switch OFF.

2.

Disconnect AV control unit connector and microphone connec-
tor.

3.

Check continuity between AV control unit harness connector
M46 (A) and microphone harness connector R8 (B).

4.

Check continuity between AV control unit harness connector
M46 (A) and ground.

Are the continuity test results as specified?

YES

>> GO TO 3

NO

>> Repair harness or connector.

3.

CHECK MICROPHONE SIGNAL

Check signal between AV control unit harness connector M46 termi-
nals 74 and 75 with CONSULT-III or oscilliscope.

Are voltage readings as specified?

A

B

Continuity

Connector

Terminal

Connector

Terminal

M46

75

R8

1

Yes

74

2

73

4

A

—

Continuity

Connector

Terminal

M46

75

Ground

No

74

73

ALNIA0552GB

Connector

(+)

(-)

Reference signal

Terminal

Terminal

M46

75

74

While speaking into MIC

ALNIA0553GB

PKIB5037J

AV

MICROPHONE SIGNAL CIRCUIT

AV-371

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C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

YES

>> Replace AV control unit. Refer to

AV-423, "Removal and Installation"

.

NO

>> Replace microphone. Refer to

AV-436, "Removal and Installation"

.

AV-372

< ECU DIAGNOSIS >

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AV CONTROL UNIT

ECU DIAGNOSIS

AV CONTROL UNIT

Reference Value

INFOID:0000000001450652

VALUES ON THE DIAGNOSIS TOOL

CONSULT-III data monitor item

TERMINAL LAYOUT

PHYSICAL VALUES

Display Item

Dis-
play

Vehicle status

Remarks

VHCL SPD SIG

ON

Vehicle speed >0 km/h (0 MPH)

Changes in indication may be delayed. This is
normal.

OFF

Vehicle speed =0 km/h (0 MPH)

PKB SIG

ON

Parking brake is applied.

Changes in indication may be delayed. This is
normal.

OFF

Parking brake is released.

ILLUM SIG

ON

Block the light beam from the auto
light optical sensor when the light
SW is ON.

—

OFF

Expose the auto light optical sensor
to light when the light SW is OFF or
ON.

IGN SIG

ON

Ignition switch ON

—

OFF

Ignition switch in ACC position

REV SIG

ON

Selector lever in R position

Changes in indication may be delayed. This is
normal.

OFF

Selector lever in any position other
than R

AWNIA0148ZZ

Terminal

(Wire color)

Description

Condition

Reference value

(Approx.)

+

–

Signal name

Input/

Output

1

(SB)

Ground

Amp. ON signal

Output

Ignition

switch

ON

—

12V

2

(R)

3

(B)

Pre-amp. audio signal front
LH

Output

Ignition

switch

ON

Audio output

SKIB3609E

AV

AV CONTROL UNIT

AV-373

< ECU DIAGNOSIS >

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C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

4

(L)

5

(Y)

Pre-amp. audio signal rear
LH

Output

Ignition

switch

ON

Audio output

6

(Y)

15

Steering switch signal A

Input

Ignition

switch

ON

Pressing

switch

0V

Pressing

switch

0.75V

Pressing VOL up switch

2V

Except for above

5V

7

(G/Y)

Ground

ACC power supply

Input

Ignition

switch

ACC

−

Battery voltage

9

(V)

Ground

Illumination signal

Input

OFF

Lighting switch is OFF

0V

Lighting switch is ON

12V

10

—

Shield

—

—

—

—

11

(G)

12

(W)

Pre-amp. audio signal front
RH

Output

Ignition

switch

ON

Audio output

13

(R)

14

(B)

Audio signal rear RH

Output

Ignition

switch

ON

Audio output

15

Ground

Steering switch signal
ground

—

Ignition

switch

ON

—

0V

16

(BR)

15

Steering switch signal B

Input

Ignition

switch

ON

Pressing

switch

0V

Pressing

switch

0.75V

Pressing VOL down switch

2V

Except for above

5V

19

(Y)

Ground

Battery power supply

Input

Ignition

switch

OFF

—

Battery voltage

20

(B)

Ground

Ground

—

Ignition

switch

ON

—

0V

Terminal

(Wire color)

Description

Condition

Reference value

(Approx.)

+

–

Signal name

Input/

Output

SKIB3609E

SKIB3609E

SKIB3609E

AV-374

< ECU DIAGNOSIS >

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AV CONTROL UNIT

21

(L)

24

RGB signal (R: red)

Output

Ignition

switch

ON

Start confirmation/adjust-
ment mode, and then dis-
play color bar by selecting
“Color Spectrum Bar” on
DISPLAY DIAGNOSIS
screen.

22

(G)

24

RGB signal (G: green)

Output

Ignition

switch

ON

Start confirmation/adjust-
ment mode, and then dis-
play color bar by selecting
“Color Spectrum Bar” on
DISPLAY DIAGNOSIS
screen.

23

(Y)

24

RGB signal (B: blue)

Output

Ignition

switch

ON

Start confirmation/adjust-
ment mode, and then dis-
play color bar by selecting
“Color Spectrum Bar” on
DISPLAY DIAGNOSIS
screen.

24

Ground

RGB signal ground

—

Ignition

switch

OFF

—

0V

25

(R)

26

RGB synchronizing signal

Output

Ignition

switch

ON

—

26

Ground

RGB synchronizing signal
ground

—

Ignition

switch

ON

—

0V

27

(G)

Ground

RGB area (YS) signal

Output

Ignition

switch

ON

At RGB image displayed

5V

At rear view camera image
displayed

Terminal

(Wire color)

Description

Condition

Reference value

(Approx.)

+

–

Signal name

Input/

Output

SKIB2238J

SKIB2236J

SKIB2237J

SKIB3603E

PKIB4948J

AV

AV CONTROL UNIT

AV-375

< ECU DIAGNOSIS >

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C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

28

(B)

Ground

Horizontal synchronizing
(HP) signal

Input

Ignition

switch

ON

—

29

(W)

Ground

Vertical synchronizing (VP)
signal

Input

Ignition

switch

On

—

30

Ground

Communication signal
(CONT

→

DISP)

Output

Ignition

switch

ON

When adjusting display-
brightness

31

(LG)

Ground

Communication signal
(DISP

→

CONT)

Input

Ignition

switch

ON

When adjusting display-
brightness

32

—

Shield

—

—

—

—

34

Ground

Antenna amp. ON signal

Output

Ignition

switch

ACC

—

12V

35

—

Amplified window antenna
signal

Input

—

—

—

42

(W)

58

(B)

DVD audio signal LH

Input

Ignition

switch

ON

When DVD player is oper-
ating

43

(R)

59

(G)

DVD audio signal RH

Input

Ignition

switch

ON

When DVD player is oper-
ating

Terminal

(Wire color)

Description

Condition

Reference value

(Approx.)

+

–

Signal name

Input/

Output

SKIB3601E

SKIB3598E

PKIB5039J

PKIB5039J

SKIB3609E

SKIB3609E