Infiniti G37 Coupe. Manual - part 108

AV

STEERING SWITCH SIGNAL B CIRCUIT

AV-185

< COMPONENT DIAGNOSIS >

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C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

Standard

Between terminals 14 and 17

  

switch 

ON

: 716 – 730 

Ω

MENU DOWN switch ON

: 318 – 324 

Ω

MENU UP switch ON

: 120 – 122 

Ω

SOURCE switch ON

: 0 

Ω

Between terminals 15 and 17

 switch ON

: 318 – 324 

Ω

VOL UP switch ON

: 120 – 122 

Ω

VOL DOWN switch ON

: 0 

Ω

JSNIA0216GB

AV-186

< COMPONENT DIAGNOSIS >

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STEERING SWITCH SIGNAL GND CIRCUIT

STEERING SWITCH SIGNAL GND CIRCUIT

Description

INFOID:0000000001559056

Transmits the steering switch signal to AV control unit.

Diagnosis Procedure

INFOID:0000000001559057

1.

CHECK STEERING SWITCH SIGNAL GND CIRCUIT

1.

Disconnect AV control unit connector and spiral cable connector. 

2.

Check continuity between AV control unit harness connector terminal 15 and spiral cable harness connec-
tor terminal 33.

3.

Connect AV control unit connector.

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.

3.

CHECK GROUND CIRCUIT

1.

Connect AV control unit connector.

2.

Check continuity between AV control unit harness connector terminal 15 and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace AV control unit.

4.

CHECK STEERING SWITCH

1.

Turn ignition switch OFF.

2.

Check steering switch. Refer to 

AV-186, "Component Inspection"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace steering switch.

Component Inspection

INFOID:0000000001559058

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

Standard

15 - 33

: Continuity should exist.

15 - Ground

: Continuity should exist.

Between terminals 14 and 17

 

 switch ON

: 716 – 730 

Ω

MENU DOWN switch ON

: 318 – 324 

Ω

MENU UP switch ON

: 120 – 122 

Ω

SOURCE switch ON

: 0 

Ω

Between terminals 15 and 17

 switch ON

: 318 – 324 

Ω

JSNIA0216GB

AV

STEERING SWITCH SIGNAL GND CIRCUIT

AV-187

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

VOL UP switch ON

: 120 – 122 

Ω

VOL DOWN switch ON

: 0 

Ω

AV-188

< ECU DIAGNOSIS >

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AV CONTROL UNIT

ECU DIAGNOSIS

AV CONTROL UNIT

Reference Value

INFOID:0000000001559059

VALUES ON THE DIAGNOSIS TOOL

CONSULT-III 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 nor-
mal.

Off

Vehicle speed =0 km/h (0 MPH)

PKB SIG

On

Parking brake is applied.

Changes in indication may be delayed. This is nor-
mal.

Off

Parking brake is released.

ILLUM SIG

On

Light switch ON

—

Off

Light switch OFF

IGN SIG

On

Ignition switch ON

—

Off

Ignition switch in ACC position

REV SIG

On

Shift the selector lever to “R” position

Changes in indication may be delayed. This is nor-
mal.

Off

Shift the selector lever other than “R” 
position

JPNIA0009ZZ

Terminal

(Wire color)

Description

Condition

Reference value

(Approx.)

+

–

Signal name

Input/

Output

6

(G)

15

(B)

Steering switch signal A

Input

Ignition 

switch 

ON

Keep pressing SOURCE 
switch.

 0 V

Keep pressing 

 switch.

0.7 V

Keep pressing 

 switch.

1.3 V

Keep pressing 

 

  

switch

2 V

Except for above.

3.3 V

7

(V)

Ground

ACC power supply

Input

Ignition 

switch 

ACC

—

Battery voltage

9

(L)

Ground

Illumination signal

Input

OFF

Lighting switch is OFF.

0 V

Lighting switch is ON.

12 V