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Nissan Altima HL32 Hybrid. Manual - part 12

AV-40

< ECU DIAGNOSIS >

[BASE AUDIO]

SATELLITE RADIO TUNER

(B)

Ground

Communication signal
(AUDIO-SAT)

Input

Set to the satellite radio
mode

(Y/R)

Ground

Battery power supply

Input

OFF

−

Battery voltage

(GR/W)

ACC power supply

ACC

(B)

–

Antenna signal

–

Terminal

(Wire color)

Item

Signal
input/
output

Condition

Voltage

(approx.)

–

Ignition

switch

Operation

SKIB3826E

AUDIO SYSTEM

AV-41

< SYMPTOM DIAGNOSIS >

[BASE AUDIO]

SYMPTOM DIAGNOSIS

AUDIO SYSTEM

AUDIO UNIT
AUDIO UNIT : Symptom Table

INFOID:0000000004219411

CD
CD : Symptom Table

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SATELLITE RADIO TUNER
SATELLITE RADIO TUNER : Symptom Table

INFOID:0000000004219413

Symptom

Possible cause

Reference page

Inoperative

• Audio unit power circuit
• Audio unit

•

AV-15

•

AV-46

Steering switch does not operate

• Steering switch
• Audio unit

•

AV-23

•

AV-46

All speakers do not sound

• Audio unit power circuit
• Audio unit

•

AV-15

•

AV-46

One or several speakers do not sound

• Front door speaker
• Tweeter
• Rear speaker

•

AV-17

•

AV-19

•

AV-21

Symptom

Possible cause

Reference page

CD cannot be inserted.

Audio unit

AV-46

CD cannot be ejected.

The CD cannot be played.

The sound skips, stops suddenly, or is distorted.

Symptom

Possible cause

Reference page

Inoperative

• Satellite radio tuner power or ground circuit
• Satellite radio tuner communication circuit
• Satellite radio tuner

•

AV-15

•

AV-25

•

AV-137

Right or left channel does not sound

• Satellite radio tuner right channel audio signal circuit
• Satellite radio tuner left channel audio signal circuit
• Satellite radio tuner

•

AV-27

•

AV-27

•

AV-137

AV-42

< SYMPTOM DIAGNOSIS >

[BASE AUDIO]

NORMAL OPERATING CONDITION

NORMAL OPERATING CONDITION

Description

INFOID:0000000004219414

The majority of the audio concerns are the result of outside causes (bad CD, electromagnetic interference,

etc.).

NOISE

The following noise results from variations in field strength, such as fading noise and multi-path noise, or

external noise from trains and other sources. It is not a malfunction.

• Fading noise: This noise occurs because of variations in the field strength in a narrow range due to moun-

tains or buildings blocking the signal.

• Multi-path noise: This noise results from the waves sent directly from the broadcast station arriving at the

antenna at a different time from the waves which reflect off mountains or buildings.

The vehicle itself can be a source of noise if noise prevention parts or electrical equipment is malfunctioning.

Check if noise is caused and/or changed by engine speed, ignition switch turned to each position, and opera-

tion of each piece of electrical equipment, and determine the cause.

NOTE:

The source of the noise can be found easily by listening to the noise while removing the fuses of electrical

components, one by one.

Type of Noise and Possible Cause

Occurrence condition

Possible cause

Occurs only when engine is ON.

A continuous growling noise occurs. The speed of
the noise varies with changes in the engine speed.

• Ignition components

The occurrence of the noise is linked with the operation of the fuel pump.

• Fuel pump condenser

Noise only occurs when various
electrical components are oper-
ating.

A cracking or snapping sound occurs with the op-
eration of various switches.

• Relay malfunction, audio unit malfunction

The noise occurs when various motors are operat-
ing.

• Motor case ground
• Motor

The noise occurs constantly, not just under certain conditions.

• Rear defogger coil malfunction
• Open circuit in printed heater
• Poor ground of antenna feeder line

A cracking or snapping sound occurs while the vehicle is being driven, especially when
it is vibrating excessively.

• Ground wire of body parts
• Ground due to improper part installation
• Wiring connections or a short circuit

PRECAUTIONS

AV-43

< PRECAUTION >

[BASE AUDIO]

PRECAUTION

PRECAUTIONS

Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSION-
ER"

INFOID:0000000004219415

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along

with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain

types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS

system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front

air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.

Information necessary to service the system safely is included in the SR and SB section of this Service Man-

ual.

WARNING:

• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision which would result in air bag inflation, all maintenance must be performed by

an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag

Module, see the SR section.

• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this

Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-

ness connectors.

Necessary for Steering Wheel Rotation After Battery Disconnect

INFOID:0000000004499295

NOTE:

• Before removing and installing any control units, first turn the push-button ignition switch to the LOCK posi-

tion, then disconnect both 12-volt battery cables.

• After finishing work, confirm that all control unit connectors are connected properly, then re-connect both 12-

volt battery cables.

• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.

If a DTC is detected, perform trouble diagnosis according to self-diagnosis results.

This vehicle is equipped with a push-button ignition switch and a steering lock unit.

If the 12-volt battery is disconnected or discharged, the steering wheel will lock and cannot be turned.

If turning the steering wheel is required with the 12-volt battery disconnected or discharged, follow the proce-

dure below before starting the repair operation.

OPERATION PROCEDURE

1. Connect both 12-volt battery cables.

NOTE:

Supply power using jumper cables if 12-volt battery is discharged.

2. Carry the Intelligent Key or insert it to the key slot and turn the push-button ignition switch to ACC position.

(At this time, the steering lock will be released.)

3. Disconnect both 12-volt battery cables. The steering lock will remain released with both 12-volt battery

cables disconnected and the steering wheel can be turned.

4. Perform the necessary repair operation.
5. When the repair work is completed, re-connect both 12-volt battery cables. With the brake pedal released,

turn the push-button ignition switch from ACC position to ON position, then to LOCK position. (The steer-

ing wheel will lock when the push-button ignition switch is turned to LOCK position.)

6. Perform self-diagnosis check of all control units using CONSULT-III.

Precaution for Trouble Diagnosis

INFOID:0000000004499296

AV COMMUNICATION SYSTEM

• Do not apply voltage of 7.0 V or higher to the measurement terminals.

• Use the tester with its open terminal voltage being 7.0 V or less.

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