Infiniti QX56 (Z62). Manual - part 85

AV-194

< DTC/CIRCUIT DIAGNOSIS >

STEERING SWITCH SIGNAL A CIRCUIT

Standard

Between terminals 14 and 17

ENTER switch ON

: 2003 – 2043 

Ω

 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

: 716 – 730 

Ω

 switch ON

: 318 – 324 

Ω

VOL UP switch ON

: 120 – 122 

Ω

VOL DOWN switch ON

: 0 

Ω

JSNIA0112GB

AV

STEERING SWITCH SIGNAL B CIRCUIT

AV-195

< DTC/CIRCUIT DIAGNOSIS >

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STEERING SWITCH SIGNAL B CIRCUIT

Description

INFOID:0000000006216369

Transmits the steering switch signal to AV control unit.

Diagnosis Procedure

INFOID:0000000006216370

1.

CHECK STEERING SWITCH SIGNAL B CIRCUIT

1.

Disconnect AV control unit connector and spiral cable connector. 

2.

Check continuity between AV control unit harness connector and spiral cable harness connector.

3.

Check continuity between AV control 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-14, "Exploded View"

.

3.

CHECK AV CONTROL UNIT VOLTAGE

1.

Connect AV control unit connector and spiral cable connector.

2.

Turn ignition switch ON.

3.

Check voltage between AV control unit harness connector.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace AV control unit. Refer to 

AV-212, "Removal and Installation"

.

4.

CHECK STEERING SWITCH

1.

Turn ignition switch OFF.

2.

Check steering switch. Refer to 

AV-195, "Component Inspection"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace steering wheel. Refer to 

ST-33, "Exploded View"

.

Component Inspection

INFOID:0000000006216371

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

AV control unit

Spiral cable

Continuity

Connector

Terminal

Connector

Terminal

M208

16

M33

31

Existed

AV control unit

Ground

Continuity

Connector

Terminal

M208

16

Not existed

(+)

(

−

)

Voltage

(Approx.)

AV control unit

AV control unit

Connector

Terminal

Connector

Terminal

M208

16

M208

15

5.0 V

AV-196

< DTC/CIRCUIT DIAGNOSIS >

STEERING SWITCH SIGNAL B CIRCUIT

Standard

Between terminals 14 and 17

ENTER switch ON

: 2003 – 2043 

Ω

 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

: 716 – 730 

Ω

 switch ON

: 318 – 324 

Ω

VOL UP switch ON

: 120 – 122 

Ω

VOL DOWN switch ON

: 0 

Ω

JSNIA0112GB

AV

STEERING SWITCH GROUND CIRCUIT

AV-197

< DTC/CIRCUIT DIAGNOSIS >

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STEERING SWITCH GROUND CIRCUIT

Description

INFOID:0000000006216372

Transmits the steering switch signal to AV control unit.

Diagnosis Procedure

INFOID:0000000006216373

1.

CHECK STEERING SWITCH SIGNAL GROUND CIRCUIT

1.

Disconnect AV control unit connector and spiral cable connector. 

2.

Check continuity between AV control unit harness connector and spiral cable harness connector.

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. Refer to 

SR-14, "Exploded View"

.

3.

CHECK GROUND CIRCUIT

1.

Connect AV control unit connector.

2.

Check continuity between AV control unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace AV control unit. Refer to 

AV-212, "Removal and Installation"

.

4.

CHECK STEERING SWITCH

1.

Turn ignition switch OFF.

2.

Check steering switch. Refer to 

AV-197, "Component Inspection"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace steering wheel. Refer to 

ST-33, "Exploded View"

.

Component Inspection

INFOID:0000000006216374

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

AV control unit

Spiral cable

Continuity

Connector

Terminal

Connector

Terminal

M208

15

M33

33

Existed

AV control unit

Ground

Continuity

Connector

Terminal

M208

15

Existed