2009 NISSAN LATIO radio

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CONTENTS
AUDIO, VISUAL, NAVIGATION & TELEPHONE SYS-
TEM
SERVICE INFORMATION .. ..........................2
PRECAUTIONS .............................................. .....2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
2
PREPARATION .............................................. .....3
Commercial Service Tool .................................... ......3
AUDIO ............................................................ .....4
Component Parts Location .................................. ......4
System Description ............................................. ......4
Schematic ........................................................... ......6
Wiring Diagram - AUDIO - ................................... ......8
Audio Unit (Base System) Harness Connector
Terminal Layout .................................................. ....
16
Terminal and Reference Value for Audio Unit
(Base System) ..................................................... ....
16
Audio Unit (Mid Level and Premium System) Har-
ness Connector Terminal Layout ........................ ....
17
Terminal and Reference Value for Audio Unit (Mid
Level and Premium System) ............................... ....
17
Subwoofer Harness Connector Terminal Layout
(Premium Audio System) .................................... ....
20
Terminal and Reference Value for Subwoofer
(Premium Audio System) .................................... ....
20
Satellite Radio Tuner Ha rness Connector Termi-
nal Layout ............................................................ ....
20
Terminal and Reference Value for Satellite Radio
Tuner ................................................................... ....
21
Trouble Diagnosis ............................................... ....21
Noise Inspection .................................................. ....22
Power Supply Circuit Inspection ......................... ....23
Satellite Radio Tuner (Fac tory Installed) Power
and Ground Supply Circuit Inspection ................. ....
24
Satellite Radio Tuner (Fac tory Installed) Commu-
nication Circuit Inspection ................................... ....
25
Satellite Radio Tuner (Fac tory Installed) Left
Channel Audio Signal Circuit Inspection ............. ....
27 Satellite Radio Tuner (Fac
tory Installed) Right
Channel Audio Signal Circuit Inspection ............. ....
27
Steering Switch Check (With Bluetooth) .............. ....28
Sound Is Not Heard from Front Door Speaker
(Base System) ..................................................... ....
30
Sound Is Not Heard from Rear Door Speaker
(Base System) ..................................................... ....
31
Sound Is Not Heard from Front Door Speaker or
Tweeter (Mid Level and Premium System) .............
32
Sound Is Not Heard from Rear Door Speaker (Mid
Level and Premium System) ............................... ....
33
Sound Is Not Heard from Subwoofer (Premium
System) ............................................................... ....
35
Removal and Installation ..................................... ....37
AUDIO ANTENNA ............................................. 42
Location of Antenna ............................................. ....42
Removal and Installation of Roof Antenna ..............42
TELEPHONE ..................................................... 44
Component Parts and Harness Connector Loca-
tion ....................................................................... ....
44
System Description .............................................. ....44
Wiring Diagram - H/PHON - ................................ ....46
Bluetooth Control Unit Harness Connector Termi-
nal Layout ............................................................ ....
48
Terminal and Reference Value for Bluetooth Con-
trol Unit ................................................................ ....
48
Bluetooth Control Unit Se lf-Diagnosis Function ......49
Workflow .............................................................. ....50
Power Supply and Ground Circuit Inspection for
Bluetooth Control Unit .. ...........................................
50
Basic Inspection of Hands-Free Phone ............... ....51
Steering Wheel Audio Co ntrol Switch Does Not
Operate ................................................................ ....
52
Voice Activated Control Fu nction Does Not Oper-
ate ........................................................................ ....
53
Removal and Installation ..................................... ....55

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• to audio unit terminal 21 (with premium system)
• through body grounds M57 and M61 and
• to subwoofer terminal 3 (with premium system)
• through body grounds B7 and B19.
Then audio signals are supplied
• through audio unit terminals 2, 3, 4, 5, 11, 12, 13, and 14
• to terminals + and - of front door speaker LH and RH and
• to terminals + and - of tweeter LH and RH and
• to terminals + and - of rear door speaker LH and RH and
• to terminals 2 and 6 of subwoofer (with premium system).
Steering Wheel Audio Contro l Switches (with Bluetooth)
When one of steering wheel audio control switches is pus hed, the resistance in steering switch circuit changes
depending on which button is pushed.
Satellite Radio Tuner (Pre-wiring) The satellite radio tuner pre-wiring allows connection of a satellite radio tuner.
Power is supplied at all times
• through 20A fuse (No. 27, located in the fuse and fusible link box)
• to satellite radio tuner pre-wiring terminal 32.
With the ignition switch in the ACC or ON position, power is supplied
• through 10A fuse (No. 20, located in the fuse and fusible link box)
• to satellite radio tuner pre-wiring terminal 36.
Then audio signals are supplied
• through satellite radio tuner pre-wiring terminals 21, 22, 23 and 24
• to audio unit terminals 41, 42, 43 and 44.
Satellite Radio Tuner (Factory Installed)
Power is supplied at all times
• through 20A fuse (No. 27, located in the fuse and fusible link box)
• to satellite radio tuner terminal 32.
With the ignition switch in the ACC or ON position, power is supplied
• through 10A fuse (No. 20, located in the fuse and fusible link box)
• to satellite radio tuner terminal 36.
Ground is supplied through the case of the satellite radio tuner.
Then audio signals are supplied
• through satellite radio tuner terminals 21, 22, 23 and 24
• to audio unit terminals 41, 42, 43 and 44.
Ground is supplied through the case of the satellite radio tuner.
SPEED SENSITIVE VOLUME SYSTEM (MID LEVEL AND PREMIUM SYSTEM) Volume level of this system goes up and down automatica lly in proportion to the vehicle speed. The control
level can be selected by the customer. Refer to Owner's Manual for operating instructions.

AUDIO
AV-19
< SERVICE INFORMATION >
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*1: With premium system
*2: With Bluetooth 42 (R) 41 (G)
Audio left
channel
sound signal
from satel-
lite radio
tuner Input ON
Receive audio
signal No sound from sat-
ellite radio tuner
left channel.
44 (B) 43 (W) Audio right
channel
sound signal
from satel-
lite radio
tuner Input ON
Receive audio
signal No sound from sat-
ellite radio tuner
right channel.
45 – Shield
ground (au-
dio signal) – – – 0V –
46 – Shield
ground (da-
ta) – – – 0V –
48 (B) Ground Satellite ra-
dio tuner re-
quest to
audio unit Input ON
Turn audio unit
ON 5VSatellite radio tun-
er does not oper-
ate properly.
49 (L) Ground Audio RX Input ON Operate audio
volume Satellite radio tun-
er audio informa-
tion does not
display properly.
50 (Y) Ground Audio TX Output ON Operate audio
volume Satellite radio tun-
er audio informa-
tion does not
display properly.
Terminal
(Wire color) ItemSignal
input/
output Condition
Reference value
(Approx.) Example of symp-
tom
+ – Ignition
switch Operation SKIA0177E
SKIA0177E
SKIA4403E
SKIA4402E

AUDIO
AV-21
< SERVICE INFORMATION >
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Terminal and Reference Valu
e for Satellite Radio Tuner INFOID:0000000004306965
Trouble Diagnosis INFOID:0000000004306966
NOTE:
The subwoofer (premium system) may be inoperative if the audio unit harness connectors have not been con-
nected in the proper sequence (when the battery remain s connected). The proper sequence is to connect M44
Terminal
(Wire color) ItemSignal
input/
output Condition
Voltage
(Approx.)
+ – Ignition
switch Operation
22 (R) 21 (G) Audio signal LH Output ON Receive audio signal.
24 (B) 23 (W) Audio signal RH Output ON Receive audio signal. 25 – Shield – – – –
26 – Data ground ON 0V
28 (B) Ground REQ1
(SAT-AUDIO) Output ONSet to the satellite radio
mode
29 (R/L) Ground Communication signal
(SAT-AUDIO) Output ONSet to the satellite radio
mode
30 (R/W) Ground Communication signal
(AUDIO-SAT) Input ON
Set to the satellite radio
mode
32 (R) GroundBattery power supply
InputOFF
− Battery voltage
36 (L) ACC power supply ACC
37 – Antenna signal – – – SKIB3609E
SKIB3609E
SKIB3825E
SKIB3824E
SKIB3826E

35, " Sound Is Not Heard from S
ubwoofer (Premium System) " .
• The majority of the audio malfunctions are the result of outside causes (damaged CD, electromagnetic inter-
ference, etc.). Check the symptom s below to diagnose the malfunction.
• 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 oper-
ation of each piece of electrical equipment, and then determine the cause.
NOTE:
Noise resulting 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 s ent directly from the broadcast station arriving at the
antenna at a different time from the waves that reflect off of mountains or buildings.
Noise Inspection INFOID:0000000004306967
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 Symptom Check item
Audio system does not work properly. • Audio unit power supply circuit. Refer to
AV-23, " Power Supply
Circuit Inspection " .
• Audio unit. Refer to "Trouble Diagnosis" .
No sound can be heard from all speakers. Audio unit. Refer to "Trouble Diagnosis" .
No sound can be heard from one or several speakers. • Open or short in audio signal circuit between audio unit and front
speaker. Refer to AV-30, " Sound Is Not Heard from Front Door
Speaker (Base System) " or
AV-32, " Sound Is Not Heard from
Front Door Speaker or Tweeter (Mid Level and Premium Sys-
tem) " .
• Front speaker. Refer to AV-30, " Sound Is Not Heard from Front
Door Speaker (Base System) " or
AV-32, " Sound Is Not Heard
from Front Door Speaker or Tweeter (Mid Level and Premium
System) " .
• Open or short in audio signal circuit between audio unit and rear
speaker. Refer to AV-31, " Sound Is Not Heard from Rear Door
Speaker (Base System) " or
AV-33, " Sound Is Not Heard from
Rear Door Speaker (Mid Level and Premium System) " .
• Rear speaker. Refer to AV-31, " Sound Is Not Heard from Rear
Door Speaker (Base System) " or
AV-33, " Sound Is Not Heard
from Rear Door Speaker (Mid Level and Premium System) " .
• Tweeter (mid level and premium system) AV-32, " Sound Is Not
Heard from Front Door Speaker or Tweeter (Mid Level and Pre-
mium System) " or
AV-33, " Sound Is Not Heard from Rear Door
Speaker (Mid Level and Premium System) " .
• Subwoofer (premium system). Refer to AV-35, " Sound Is Not
Heard from Subwoofer (Premium System) " .
• Audio unit. Refer to AV-23, " Power Supply Circuit Inspection " .
No sound can be heard from radio or noise is heard. • Antenna feeder. Refer to
AV-42 .
• Antenna. Refer to AV-42 .
• Audio unit. Refer to AV-23, " Power Supply Circuit Inspection " .

OK >> GO TO 4.
NG >> • Check connector housings for disconnected or loose
terminals.
• Repair harness or connector. OK >> Inspection End.
NG >> • Check connector housings for disconnected or loose
terminals.
• Repair harness or connector.
Satellite Radio Tuner (Factory Installed) Power and Ground Supply Circuit Inspection
INFOID:0000000004306969OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of blown fuse before installing new fuse. Refer to PG-3 .
OK >> GO TO 3.Unit
Terminal No.
OFF ACC ON
(+)
(-)
Connector Terminal
Subwoof-
er B29 1 Ground 0V Battery
voltage Battery
voltage Unit
Terminal No.
OFF ACC ON
(+)
(-)
Connector Terminal
Satellite
radio tuner
(factory in-
stalled) B30
32 Ground
Battery
voltage Battery
voltage Battery
voltage
36 Ground 0V Battery
voltage Battery
voltage

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NG >> • Check connector housings for disconnected or loose terminals.
• Repair harness or connector. OK >> Inspection End.
NG >> • Check connector housings for disconnected or loose
terminals.
• Repair harness, connector or satellite radio tuner (factory installed) case ground.
Satellite Radio Tuner (Factory Insta lled) Communication Circuit Inspection INFOID:0000000004306970OK >> GO TO 2.
NG >> Repair harness or connector. OK >> GO TO 3.
NG >> Repair harness or connector.

OK >> GO TO 4.
NG >> Repair harness or connector. OK >> GO TO 5.
NG >> Replace audio unit. Refer to AV-37, " Removal and
Installation " .
OK >> GO TO 6.
NG >> Replace audio unit. Refer to AV-37, " Removal and
Installation " .
OK >> Replace satellite radio tuner. Refer to
AV-37, " Removal
and Installation " .
NG >> Replace audio unit. Refer to AV-37, " Removal and
Installation " .
Continuity should exist.
Continuity should not exist. Terminal
and Reference Value for Satel-
lite Radio Tuner " .
Terminal
and Reference Value for Satel-
lite Radio Tuner " .
Terminal
and Reference Value for Satel-
lite Radio Tuner " .