2005 NISSAN NAVARA radio

AV-4
SYSTEM DESCRIPTION
SYSTEM DESCRIPTION
PFP:00000
System FunctionsEKS00Q5X
Refer to Owner's Manual for audio system operating instructions.
AUDIO
Speed Sensitive Volume (6CD Player Type)
Volume level of this system gone up and down automatically in proportion to the vehicle speed. And the con-
trol level can be selected by the customer.
NATS AUDIO LINK (WITHOUT NAVIGATION SYSTEM)
Description
The link with the NATS IMMU implies that the audio unit can basically only be operated if connected to the
matching NATS IMMU to which the audio unit was initially fitted on the production line.
Since radio operation is impossible after the link with the NATS is disrupted theft of the audio unit is basically
useless since special equipment is required to reset the audio unit.
Initialization Process for Audio Units That Are Linked to The NATS IMMU
New audio units will be delivered to the factories in the “NEW” state, i.e. ready to be linked with the vehicle's
NATS. When the audio unit in “NEW” state is first switched on at the factory, it will start up communication with
the vehicle's immobilizer control unit (IMMU) and send a code (the “audio unit Code”) to the IMMU. The IMMU
will then store this code, which is unique to each audio unit, in its (permanent) memory.
Upon receipt of the code by the IMMU, the NATS will confirm correct receipt of the audio unit code to the audio
unit. Hereafter, the audio unit will operate as normal.
During the initialization process, “NEW” is displayed on the audio unit display. Normally though, communica-
tion between audio unit and IMMU takes such a short time (300 ms) that the audio unit seems to switch on
directly without showing “NEW” on its display.
Normal Operation
Each time the audio unit is switched on afterwards, the audio unit code will be verified between the audio unit
and the NATS before the audio unit becomes operational. During the code verification process, “WAIT” is
shown on the audio unit display. Again, the communication takes such a short time (300 ms) that the audio
unit seems to switch on directly without showing “WAIT” on its display.
When The Radio Is Locked
In case of a audio unit being linked with the vehicle's NATS (immobilizer system), disconnection of the link
between the audio unit and the IMMU will cause the audio unit to switch into the lock (“SECURE”) mode in
which the audio unit is fully inoperative. Hence, repair of the audio unit is basically impossible, unless the
audio unit is reset to the “NEW” state for which special decoding equipment is required.
Clarion has provided their authorized service representatives with so called “decoder boxes” which can bring
the audio unit back to the “NEW” state, enabling the audio unit to be switched on after which repair can be per-
formed. Subsequently, when the repaired audio unit is delivered to the final user again, it will be in the “NEW”
state to enable re-linking the audio unit to the vehicle's immobilizer system. As a result of the above, repair of
the audio unit can only be done by an authorized Clarion representative (when the owner of the vehicle
requests repair and can show personal identification).
Service Procedure
Item Service procedure Description
Battery disconnection No additional action required. –
Radio needs repair Repair needs to be done by authorized
representative of radio manufacturer since
radio cannot be operated unless it is reset
to NEW state, using special decoding
equipment.–
Replacement of radio by new part No additional action required. Radio is delivered in NEW state.
Transferring radio to another vehicle/
replacement of radio by an “old” partRadio needs to be reset to NEW state by
authorized representative of radio manu-
facturer.–
Replacement of IMMU Radio needs to be reset to NEW state by
authorized representative of Clarion.After switching on the radio, it will display
“SECURE” after 1 minute.

SYSTEM DESCRIPTION
AV-5
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AV
Personal Audio Setting
The radio is designed to store several settings (volume, bass, treble, preset stations) with every NATS ignition
key used. Up to a maximum of 4 NATS keys can be registered. During the communication mentioned under
“Anti-Theft System”, the radio will recognize the used ignition key and select the accompanying settings.
VEHICLE INFORMATION SYSTEM
lThe status of audio system, fuel consumption, rear view monitor and navigation system are displayed.
lNAVI control unit receives the data signal from ECM, combination meter via CAN communication. It calcu-
lates the values of fuel economy, and trip computer from the received information and displays them.
NAVIGATION SYSTEM
Refer to Owner's Manual or navigation system Owner's Manual for navigation system operating instructions.
Location Detection Principle
The navigation system periodically calculates the vehicle's current
position according to the following three signals:
lTravel distance of the vehicle as determined by the vehicle
speed sensor
lTurning angle of the vehicle as determined by the gyroscope
(angular velocity sensor)
lDirection of vehicle travel as determined by the GPS antenna
(GPS information)
The current position of the vehicle is then identified by comparing the
calculated vehicle position with map data read from the map DVD-
ROM, which is stored in the DVD-ROM drive (map-matching), and
indicated on the screen as a vehicle mark. More accurate data is judged and used by comparing vehicle posi-
tion detection results found by the GPS with the result by map-matching.
The current vehicle position will be calculated by detecting the dis-
tance the vehicle moved from the previous calculation point and its
direction.
lTravel distance
Travel distance calculations are based on the vehicle speed
sensor input signal. Therefore, the calculation may become
incorrect as the tires wear down. To prevent this, an automatic
distance correction function has been adopted.
lTravel direction
Change in the travel direction of the vehicle is calculated by a
gyroscope (angular velocity sensor) and a GPS antenna (GPS
information). They have both advantages and disadvantages.
More accurate traveling direction is detected because priorities are set for the signals from these two
devices according to the situation.
No communication from IMMU to radio 1. If NATS is malfunctioning, check NATS
system.
2. After NATS is repaired, reset radio to
NEW state by authorized representative
of Clarion.After switching on the radio, the radio will
display “SECURE” after 1 minute. Further
use of radio is impossible until communica-
tion is established again, or after radio is
reset by authorized representative of Clar-
ion.
When initialized between ECM and IMMU. Radio needs to be reset to NEW status by
authorized representative of Clarion.After switching on the radio, it will display
“SECURE” after 1 minute. Item Service procedure Description
SKIB1058E
Type Advantage Disadvantage
Gyroscope
(angular velocity sensor)Can detect the vehicle's turning angle
quite accurately.Direction errors may accumulate when vehicle is
driven for long distances without stopping.
GPS antenna
(GPS information)Can detect the vehicle's travel direction
(North/South/East/West).Correct direction cannot be detected when vehi-
cle speed is low.
SEL684V

SYSTEM DESCRIPTION
AV-7
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AV
GPS (Global Positioning System)
GPS (Global Positioning System) was developed for and is con-
trolled by the US Department of Defense. The system utilizes GPS
satellites (NAVSTAR), sending out radio waves while flying on an
orbit around the earth at an altitude of approximately 21,000 km
(13,000 miles).
The GPS receiver calculates the vehicle's position in three dimen-
sions (latitude/longitude/altitude) according to the time lag of the
radio waves received from four or more GPS satellites (three-dimen-
sional positioning). If radio waves were received only from three
GPS satellites, the GPS receiver calculates the vehicle's position in
two dimensions (latitude/longitude), utilizing the altitude data calcu-
lated previously with radio waves from four or more GPS satellites
(two-dimensional positioning).
Position correction by GPS is not available while the vehicle is stopped.
Accuracy of GPS will deteriorate under the following conditions:
lIn two-dimensional positioning, GPS accuracy will deteriorate when altitude of the vehicle position
changes.
lThe accuracy can be even lower depending on the arrangement of the GPS satellites utilized for the posi-
tioning.
lPosition detection is not possible when vehicle is in an area where radio waves from the GPS satellite do
not reach, such as in a tunnel, parking lot in a building, and under an elevated highway. Radio waves from
the GPS satellites may not be received when some object is located over the GPS antenna.
NOTE:
lEven a high-precision three dimensional positioning, the detection result has an error about 10 m (33 ft).
lBecause the signals of GPS satellite is controlled by the Tracking and Control Center in the United States,
the accuracy may be degraded lower intentionally or the radio waves may stop.
Traffic Information (RDS-TMC)
NOTE:This system is built-in NAVI control unit.
The Traffic Information broadcast allows to you to avoid delays due to traffic incidents.
Traffic jams, roadwork, closed roads around your current location, etc. are represented graphically on the map
by icons depicting the nature of the event.
Incidents on the route are automatically brought to your attention when they are approached.
The Traffic Information feature gives you the opportunity to forecast traffic incidents, determine how serious
they are and, via the guidance mode, allows you to detour around traffic incidents.
The navigation system receives traffic information from best available sources and enables the RDS-TMC
(Radio Data System-Traffic Information Channel) to inform and guide you.
The RDS-TMC broadcast is fed by a dedicated FM tuner so that you can still tune your radio station while Traf-
fic Information is being broadcasted.
HANDS-FREE PHONE
lNAVI control unit has Bluetooth module. It can perform wireless hands-free telephone calls using a cellu-
lar phone in vehicle compartment.
l5 or more portable phones can be registered into the NAVI control unit.
SEL526V

SYSTEM DESCRIPTION
AV-9
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AV
GPS ANTENNA
lGPS antenna (1)
lDisplay (2)
The GPS antenna receives and amplifies the radio waves from the
GPS satellites, and then transmits the GPS signal to NAVI control
unit.
DISPLAY UNIT
lImages on the display include RGB image such as map screen
and rear-view image displayed when set the select lever to R
range.
lNAVI control unit controls images on the display.
AV S W I T C H
For operation panel, centralized switch integrated with the audio and
NAVI operation has been adopted. The operation signal is sent to
NAVI control unit via communication.
SKIB4501E
SKIB3893E
SKIB4069E

AV-52
DIAGNOSIS SYSTEM
Error History Display Item
Some error items may be displayed simultaneously according to the cause. If some error items are displayed
simultaneously, the detection of the cause can be performed by the combination of display items
Display Item DescriptionPossible malfunction location/Action to
take
CAN_COMM_CIRCUITCAN communication malfunction is
detectedPerform the diagnosis using CONSULT-
II, and then repair the malfunctioning
parts by diagnostic results.
Refer toAV-47, "
DIAGNOSIS
RESULTS".
CONTROL UNIT (CAN)CAN initial diagnosis malfunction is
detectedReplace NAVI control unit
CONTROL UNIT (AV)AV communication circuit initial diagno-
sis malfunction is detectedReplace NAVI control unit
lCAN_COMM_CIRCUIT (AV)
lAudio Unit Connection Error
lAmplifier Connection Error
lRDS-TMC Error
lAudio unit power supply and ground
circuit malfunction is detected
lMalfunctionisdetectedoncommuni-
cation circuit between AV switch and
audio unit
lMalfunctionisdetectedoncommuni-
cation signal between audio unit and
NAVI control unit
lAudio unit power supply and ground
circuit
lCommunication circuit between AV
switch and audio unit
lAV switch
lAudio unit
lNAVI control unit
lCAN_COMM_CIRCUIT (AV)
lSwitches Connection Error
lAV switch power supply and ground
circuit malfunction is detected
lMalfunctioning is detected on com-
munication circuit AV switch and
NAVI control unit
lAV switch power supply and ground
circuit
lAV switch
lNAVI control unit
Front Display Connection Error
lDisplay unit power supply and ground
circuit malfunction is detected
lMalfunctionisdetectedoncommuni-
cation circuit between Display unit
and NAVI control unit
lMalfunctionisdetectedoncommuni-
cation signal between Display unit
and NAVI control unit
lDisplay unit power supply and ground
circuit
lCommunication circuit between Dis-
play unit and NAVI control unit
lDisplay unit
lNAVI control unit
GPS Antenna ErrorGPS antenna connection malfunction is
detected
lGPS antenna connection line condi-
tion
lGPS antenna
lGPS antenna feeder
lNAVI control unit
lCAN_COMM_CIRCUIT (AV)
lSwitches Connection Error
lAudio Unit Connection Error
lAmplifier Connection Error
lRDS-TMC Error
lMalfunctionisdetectedoncommuni-
cation circuit between NAVI control
unit and AV switch
lMalfunctionisdetectedoncommuni-
cation signal between NAVI control
unit and AV switch
lCommunication circuit between NAVI
control unit and AV switch
lNAVI control unit
lAV switch
FLASH-ROM Error Of Control Unit
NAVI control unit malfunction is
detectedReplace NAVI control unit
Connection Of Gyro
GPS Communication Error
GPS malfunction is detectedIf the symptom such as the GPS receiv-
ing malfunction occurs, intermittent mal-
function caused by strong radio
interference may be detected. If the
malfunction always occurs, replace
NAVI control unit. GPS ROM Error
GPS RAM Error
GPS RTC Error

DIAGNOSIS SYSTEM
AV-57
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AV
Self-Diagnostic Results Display Item
Some error items may be displayed simultaneously according to the cause. If some error items are displayed
simultaneously, the detection of the cause can be performed by the combination of display items.
Display Item DescriptionPossible malfunction location/Action to
take
CAN_COMM_CIRCUIT [U1000]CAN communication malfunction is
detectedPrint out the self-diagnostic results and
GO TOLAN-3, "
Precautions When
Using CONSULT-II".
CONTROL UNIT (CAN) [U1010]CAN initial diagnosis malfunction is
detectedReplace NAVI control unit
CONTROL UNIT (AV) [U1310]AV communication circuit initial diagno-
sis malfunction is detectedReplace NAVI control unit
lAV COMM CIRCUIT [U1300]
lSWITCH CONN [U1240]
lAUDIO H/U CONN [U1249]
lAMP CONN [U124E]
lRDS CONN [U124F]
lMalfunction is detected on communi-
cation circuit between AV switch and
NAVI control unit
lMalfunction is detected on communi-
cation signal between AV switch and
NAVI control unit
lCommunication circuit between AV
switch and NAVI control unit
lAV switch
lNAVI control unit
lAV COMM CIRCUIT [U1300]
lAUDIO H/U CONN [U1249]
lAMP CONN [U124E]
lRDS CONN [U124F]
lAudio unit power supply and ground
circuit malfunction is detected
lMalfunction is detected on communi-
cation circuit between AV switch and
audio unit
lMalfunction is detected on communi-
cation signal between AV switch and
NAVI control unit
lAudio unit power supply and ground
circuit
lCommunication circuit between AV
switch and audio unit
lAudio unit
lAV switch
lNAVI control unit
FRONT DISP CONN [U1243]
lDisplay unit power supply and ground
circuit malfunction is detected
lMalfunction is detected on communi-
cation circuit between display unit
and NAVI control unit
lMalfunction is detected on communi-
cation signal between display unit
and NAVI control unit
lDisplay unit power supply and ground
circuit
lCommunication circuit between dis-
play unit and NAVI control unit
lDisplay unit
lNAVI control unit
GPS ANTENNA CONN [U1244]GPS antenna connection malfunction is
detected
lGPS antenna connection line condi-
tion
lGPS antenna
lNAVI control unit
lAV COMM CIRCUIT [U1300]
lSWITCH CONN [U1240]
lAV switch power supply and ground
circuit malfunction is detected
lMalfunction is detected on communi-
cation signal between AV switch and
NAVI control unit
lAV switch power supply and ground
circuit
lAV switch
lNAVI control unit
Control Unit FLASH-ROM [U1200]
NAVI control unit malfunction is
detectedReplace NAVI control unit
GYRO NO CONN [U1201]
GPS COMM [U1204]
GPS malfunction is detectedIf the symptom such as the GPS receiv-
ing malfunction occurs, intermittent mal-
function caused by strong radio
interference may be detected. If the
malfunction always occurs, replace
NAVI control unit. GPS ROM [U1205]
GPS RAM [U1206]
GPS RTC [U1207]

TROUBLE DIAGNOSIS
AV-61
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AV
TROUBLE DIAGNOSISPFP:00004
Navigation SystemEKS00Q6O
RGB ImageEKS00Q6P
Symptoms Check items Possible malfunction location/Action to take
AV switch cannot be operatedAll switches cannot be operatedPerform the self-diagnosis using CONSULT-II
Refer toAV-56, "
SELF-DIAG RESULTS".
Only specified switch cannot be
operated
lPerform the self-diagnosis using CONSULT-II
Refer toAV-56, "
SELF-DIAG RESULTS".
–No malfunction
AV switch
–Malfunction is detected
Refer toAV-57, "
Self-Diagnostic Results Display
Item".
Map screen is not displayed
(RGB image other than map is
normal)–Perform the on board self-diagnosis
Refer toAV-47, "
DIAGNOSIS RESULTS".
Fuel economy information display
is malfunctioning–Perform the self-diagnosis using CONSULT-II
Refer toAV-56, "
SELF-DIAG RESULTS".
Voice guidance is not heard. –
lVoice guidance signal circuit
lAudio unit
lNAVI control unit
Traffic information (RDS-TMC) is
not receivedRadio broadcasts are received
lCommunication signal circuit
lAudio unit
lNAVI control unit
Radio broadcasts are not received
lWindow antenna or rod antenna
lAntenna feeder
lAntenna amp. ON signal circuit
lAudio unit
lNAVI control unit
Symptoms Check items Possible malfunction location/Action to take
Color of RGB image is not proper.Light blue (Cyan) tint
lRGB signal (R: red) circuit
lDisplay unit
lNAVI control unit
Purple (Magenta) tint and image is
rolling
lRGB signal (G: green) circuit
lDisplay unit
lNAVI control unit
Screen looks yellowish
lRGB signal (B: blue) circuit
lDisplay unit
lNAVI control unit
RGB image is not displayed
(Nothing is displayed on the
screen)
lAV switch cannot be operated
when it is pressed
lBacklight of display is turned onPerform the self-diagnosis using CONSULT-II
Refer toAV-56, "SELF-DIAG RESULTS".
l“MULTI AV” is not displayed on
“SELECT SYSTEM” screen of
CONSULT-II.lNAVI control unit power supply and ground circuit
lNAVI control unit
Backlight of display is not turned on
lDisplay unit power supply and ground circuit
lDisplay unit

PRECAUTIONS
BRC-3
[ABS]
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[ABS]PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EFS006DM
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. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WARNING:
lTo 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 per-
formed by an authorized NISSAN/INFINITI dealer.
lImproper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
lDo 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
harness connectors.
Precautions for Brake SystemEFS005TG
lRecommended fluid is brake fluid “DOT 3” or “DOT 4”.
lNever reuse drained brake fluid.
lBe careful not to splash brake fluid on painted areas.If brake fluid is splashed, wipe it off and flush area
with water immediately.
lNever use mineral oils such as gasoline or kerosene. They will ruin rubber parts of the hydraulic system.
lUse flare nut wrench when removing flare nuts, and use a flare
nut torque wrench when tighten flare nuts.
lBrake system is an important safety part.If a brake fluid leak is
detected, always disassemble the affected part.If a malfunction
is detected, replace part with new one.
lBefore working, turn ignition switch OFF and disconnect con-
nector of ABS actuator and electric unit (control unit) or the bat-
tery cables.
lWhen installing brake tube and hose, be sure to torque.
WARNING:
Clean brake pads and shoes with a waster cloth, then wipe with
a dust collector.
Precautions for Brake ControlEFS005TH
lJust after starting vehicle after ignition switch ON, brake pedal may vibrate or motor operating noise may
be heard from engine room. This is a normal status of operation check.
lStopping distance may be longer than that of vehicles without ABS when vehicle drives on rough, gravel,
or snow-covered (fresh, deep snow) roads.
lWhen an error is indicated by ABS or another warning lamp, collect all necessary information from cus-
tomer (what symptoms are present under what conditions) and check for simple causes before starting
diagnostic servicing. Besides electrical system inspection, check brake booster operation, brake fluid
level, and fluid leaks.
lIf tyre size and type are used in an improper combination, or brake pads are not Genuine NISSAN parts,
stopping distance or steering stability may deteriorate.
lIf there is a radio, antenna, or antenna lead-in wire (including wiring) near control module, ABS function
may have a malfunction or error.
lIf aftermarket parts (car stereo, CD player, etc.) have been installed, check for incidents such as harness
pinches, open circuits, and improper wiring.
SBR820BA