Infiniti G35 (V35) Sedan. Manual - part 70

AV-52

< COMPONENT DIAGNOSIS >

[BASE AUDIO WITHOUT NAVIGATION]

COMMUNICATION SIGNAL CIRCUIT (CONT-SAT)

COMMUNICATION SIGNAL CIRCUIT (CONT-SAT)

Description

INFOID:0000000000964571

Satellite radio tuner and AV control unit are connected with a serial communication. They transmit the opera-
tion signal from AV control unit to satellite radio tuner, and transmit the display signal from satellite radio tuner
to AV control unit. 

Diagnosis Procedure

INFOID:0000000000964572

1.

CHECK CONTINUITY COMMUNICATION SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect satellite radio tuner connector and AV control unit connector.

3.

Check continuity between satellite radio tuner harness connector terminals 9, 10 and AV control unit har-
ness connector terminals 29, 30.

4.

Check continuity between satellite radio tuner harness connector terminals 9, 10 and ground.

Is inspection result OK?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK COMMUNICATION SIGNAL

1.

Connect satellite radio tuner connector and AV control unit connector.

2.

Turn ignition switch ON.

3.

Check signal between satellite radio tuner harness connector terminal 9 and ground.

Is inspection result OK?

YES

>> GO TO 3.

NO

>> Replace satellite radio tuner.

3.

CHECK COMMUNICATION SIGNAL

Check signal between satellite radio tuner harness connector terminal 10 and ground.

Is inspection result OK?

YES

>> Replace satellite radio tuner.

NO

>> Replace AV control unit.

9 - 29

: Continuity should exist.

10 - 30

: Continuity should exist.

9, 10 - Ground

: Continuity should not exist.

9 - Ground

SKIA9300J

10 - Ground

SKIA9301J

AV

REQUEST SIGNAL CIRCUIT (SAT

→

CONT)

AV-53

< COMPONENT DIAGNOSIS >

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REQUEST SIGNAL CIRCUIT (SAT

→

CONT)

Description

INFOID:0000000000964573

Request signal transmits the signal to recognize the connection of satellite radio tuner from satellite radio
tuner to AV control unit.

Diagnosis Procedure

INFOID:0000000000964574

1.

CHECK CONTINUITY REQUEST SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect satellite radio tuner connector and AV control unit connector.

3.

Check continuity between satellite radio tuner unit harness connector terminal 8 and AV control unit har-
ness connector terminal 28.

4.

Check continuity between satellite radio tuner harness connector terminal 8 and ground.

Is inspection result OK?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK COMMUNICATION SIGNAL

1.

Connect satellite radio tuner connector and AV control unit connector.

2.

Turn ignition switch ON.

3.

Check signal between satellite radio tuner harness connector terminal 8 and ground.

Is inspection result OK?

YES

>> Replace AV control unit.

NO

>> Replace satellite radio tuner.

8 - 28

: Continuity should exist.

8 - Ground

: Continuity should not exist.

8 - Ground

SKIA9299J

AV-54

< COMPONENT DIAGNOSIS >

[BASE AUDIO WITHOUT NAVIGATION]

STEERING SWITCH SIGNAL A CIRCUIT

STEERING SWITCH SIGNAL A CIRCUIT

Description

INFOID:0000000000964575

Transmits the steering switch signal to AV control unit.

Diagnosis Procedure

INFOID:0000000000964576

1.

CHECK STEERING SWITCH SIGNAL A CIRCUIT

1.

Disconnect AV control unit connector and spiral cable connector. 

2.

Check continuity between AV control unit harness connector terminal 6 and spiral cable harness connec-
tor terminal 24.

3.

Check continuity between AV control unit harness connector terminals 6 and ground.

Is inspection result OK?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK SPIRAL CABLE

Check spiral cable. 

Is inspection result OK?

YES

>> GO TO 3. 

NO

>> Replace spiral cable.

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 terminals 6 and 15.

Is inspection result OK?

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-54, "Component Inspection"

.

Is inspection result OK?

YES

>> INSPECTION END

NO

>> Replace steering switch.

Component Inspection

INFOID:0000000000964577

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

6 - 24

: Continuity should exist.

6 - Ground

: Continuity should not exist.

6 - 15

: Approx. 3.3 V

AV

STEERING SWITCH SIGNAL A CIRCUIT

AV-55

< COMPONENT DIAGNOSIS >

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Standard

Between terminals 14 and 17

MENU DOWN switch ON

: 318 – 324 

Ω

MENU UP switch ON

: 120 – 122 

Ω

SOURCE switch ON

: 0 

Ω

Between terminals 15 and 17

VOL UP switch ON

: 120 – 122

Ω

VOL DOWN switch ON

: 0 

Ω

JSNIA0215GB