2005 NISSAN NAVARA ECU

ATC-116
CONTROL UNIT
CONTROL UNIT
PFP:27500
Removal and InstallationEJS006C0
REMOVAL
1. Remove cluster lid C. Refer toIP-11, "CLUSTER LID C".
2. Remove the four screws securing the front air control to cluster
lid C.
3. Remove the front air control.
INSTALLATION
Installation is in the reverse order of removal.
LBIA0416E

ATC-128
HEATER PUMP
HEATER PUMP
PFP:92264
ComponentsEJS006CC
Heater Pump
Removal and InstallationEJS006DC
REMOVAL
1. Partially drain the engine cooling system. Refer toCO-8, "DRAINING ENGINE COOLANT".
2. Disconnect the heater pump electrical connector.
3. Disconnect the two heater hoses.
4. Remove the heater pump from the bracket securing the heater pump to the cowl top.
CAUTION:
Do not disassemble the heater pump, replace the heater pump as an assembly.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
lThe heater pump rubber mount must be fully seated on the bracket.
lDo not disassemble the heater pump, replace the heater pump as an assembly.
LBIA0414E
1. Cowl top 2. Heater pump electrical connector 3. Heater pump
4. Heater hose 5. Heater hose

ATC-152
REFRIGERANT LINES
3. Move probe along component approximately 25 to 50 mm (1 to
2 in)/sec.
CHECKING PROCEDURE
To prevent inaccurate or false readings, make sure there is no refrigerant vapor, shop chemicals, or cigarette
smoke in the vicinity of the vehicle. Perform the leak test in calm area (low air/wind movement) so that the
leaking refrigerant is not dispersed.
1. Turn engine OFF.
2. Connect a suitable A/C manifold gauge set (SST) to the A/C service valves.
3. Check if the A/C refrigerant pressure is at least 345 kPa (3.45 bar, 3.52 kg/cm
2,50psi)above16°C. If
less than specification, recover/evacuate and recharge the system with the specified amount of refriger-
ant.
NOTE:
At temperatures below 16°C, leaks may not be detected since the system may not reach 345 kPa (3.45
bar, 3.52 kg/cm
2,50psi).
4. Perform the leak test from the high-pressure side (compressor discharge a to evaporator inlet g) to the
low-pressure side (evaporator drain hose h to shaft seal l). Refer toATC-140, "
Components". Perform a
leak check for the following areas carefully. Clean the component to be checked and move the leak
detected probe completely around the connection/component.
Compressor
Check the fitting of high- and low-pressure flexible hoses, relief valve and shaft seal.
Liquid tank
Check the refrigerant pressure sensor.
Service valves
Check all around the service valves. Ensure service valve caps are secured on the service valves (to pre-
vent leaks).
NOTE:
After removing A/C manifold gauge set from service valves, wipe any residue from valves to prevent any
false readings by leak detector.
Cooling unit (Evaporator)
With engine OFF, turn blower fan on “High” for at least 15 seconds to dissipate any refrigerant trace in the
cooling unit. Wait a minimum of 10 minutes accumulation time (refer to the manufacturer’s recommended
procedure for actual wait time) before inserting the leak detector probe into the drain hose.
Keep the probe inserted for at least 10 seconds. Use caution not to contaminate the probe tip with water
or dirt that may be in the drain hose.
5. If a leak detector detects a leak, verify at least once by blowing compressed air into area of suspected
leak, then repeat check as outlined above.
6. Do not stop when one leak is found. Continue to check for additional leaks at all system components.
If no leaks are found, perform steps 7 - 10.
7. Start engine.
8. Set the heater A/C control as follows;
a. A/C switch: ON
b. MODE control dial: VENT (Ventilation)
c. Intake door position: Recirculation
d. Max. cold temperature
e. Fan speed: High
9. Run engine at 1,500 rpm for at least 2 minutes.
SHA708EA

AV-1
AUDIO-VISUAL SYSTEM
K ELECTRICAL
CONTENTS
C
D
E
F
G
H
I
J
L
M
SECTIONAV
A
B
AV
AUDIO-VISUAL SYSTEM
PRECAUTIONS .......................................................... 3
Precautions for Supplemental Restraint System
(SRS)“AIRBAG”and“SEATBELTPRE-TEN-
SIONER” .................................................................. 3
Wiring Diagrams and Trouble Diagnosis .................. 3
SYSTEM DESCRIPTION ............................................ 4
System Functions ..................................................... 4
AUDIO ................................................................... 4
NATS AUDIO LINK (WITHOUT NAVIGATION
SYSTEM) .............................................................. 4
VEHICLE INFORMATION SYSTEM ..................... 5
NAVIGATION SYSTEM ......................................... 5
HANDS-FREE PHONE ......................................... 7
Component Description ............................................ 8
AUDIO UNIT ......................................................... 8
NAVI CONTROL UNIT .......................................... 8
GPS ANTENNA .................................................... 9
DISPLAY UNIT ...................................................... 9
AV SWITCH .......................................................... 9
Component Parts Location ..................................... 10
Location Of Antenna .............................................. 10
Schematic — AUDIO — / With 1CD Player Type... 12
Wiring Diagram — AUDIO — / With 1CD Player Type
... 13
Schematic — AUDIO — / With 6CD Player Type... 16
Wiring Diagram — AUDIO — / With 6CD Player Type
... 17
Schematic — NAVI — ............................................ 20
Wiring Diagram — NAVI — .................................... 21
Schematic — NAVI — / COMM .............................. 28
Wiring Diagram — NAVI — / COMM ...................... 29
Wiring Diagram — TELEPHONE (PRE WIRE) —
/ Without NAVI ........................................................ 32
CAN Communication .............................................. 33
SYSTEM DESCRIPTION .................................... 33
TERMINALS AND REFERENCE VALUE FOR CON-
TROL UNIT ............................................................... 34
Audio Unit (1CD Player Type) ................................ 34
Audio Unit (6CD Player Type) Without NAVI .......... 35Audio Unit (With NAVI) ........................................... 37
NAVI Control Unit ................................................... 38
Display Unit ............................................................ 41
DIAGNOSIS SYSTEM ............................................... 44
Navigation System Diagnosis Function .................. 44
On Bord Self-Diagnosis Function ........................... 44
DESCRIPTION .................................................... 44
DIAGNOSIS ITEM ............................................... 44
OPERATION PROCEDURE ................................ 45
Self Diagnosis Mode ............................................... 46
ERROR DETECTION RANGE OF SELF-DIAG-
NOSIS MODE ..................................................... 47
DIAGNOSIS RESULTS ....................................... 47
Confirmation/Adjustment Mode .............................. 48
SCREEN TROUBLE DIAGNOSIS ...................... 49
VEHICLE SIGNALS ............................................ 49
SPEAKER TEST ................................................. 50
NAVIGATION ....................................................... 50
ERROR HISTORY ............................................... 51
VEHICLE CAN DIAGNOSIS ............................... 53
AV COMM DIAGNOSIS ....................................... 54
HANDSFREE PHONE ........................................ 54
BLUETOOTH ....................................................... 54
DELETE UNIT CONNECTION LOG ................... 55
CONSULT-II Functions ........................................... 56
CONSULT-II FUNCTIONS ................................... 56
CONSULT-II BASIC OPERATION PROCEDURE
... 56
SELF-DIAG RESULTS ........................................ 56
DATA MONITOR ................................................. 58
AV COMM MONITOR .......................................... 59
ECU PART NUMBER .......................................... 60
TROUBLE DIAGNOSIS ............................................ 61
Navigation System .................................................. 61
RGB Image ............................................................. 61
Voice Activated Control System ............................. 62
Steering Wheel Switch ............................................ 63
Component Parts Inspection .................................. 63
STEERING WHEEL SWITCH UNIT INSPEC-

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
C
D
E
F
G
H
I
J
L
MA
B
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

AV-56
DIAGNOSIS SYSTEM
CONSULT-II Functions
EKS00Q6L
CONSULT-II FUNCTIONS
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II BASIC OPERATION PROCEDURE
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
1. Select “MULTI AV” on “SELECT SYSTEM” screen. If “MULTI
AV” is not indicated, check the following items.
lNAVI contorol unit power supply and ground circuit.
lCONSULT-II data link connector (DLC) circuit
Refer toGI-50, "
CONSULT-II Data Link Connector (DLC) Cir-
cuit".
2. Select diagnosis item on “SELECT DIAG MODE” screen.
SELF-DIAG RESULTS
The self-diagnosis is started and self-diagnostic results are dis-
played by touching “START” after selecting “SELF-DIAG RESULTS”.
lIn CONSULT-II self-diagnosis, self-diagnostic results and error
history are displayed collectively.
lThe current malfunction indicates “CRNT”. The past malfunction
indicates “PAST”.
lIf DTC [U1000], [U1300] are detected, “0” is displayed at TIME.
If it is normal the next time ignition switch is ON, add 1 to the
TIME.
Diagnosis mode Description Reference
SELF DIAG RESULTSPerforms the connection diagnosis of communication circuit between NAVI
control unit and navigation system and displays the current and past malfunc-
tions collectively.AV- 5 6
DATA MONITORThe diagnosis of vehicle signal that is input to the NAVI control unit can be
performed.AV- 5 8
CAN DIAG SUPPORT MNTR The transmitting/receiving of CAN communication can be monitored.LAN-15
AV COMM MONITOR The transmitting/receiving of navigation system can be monitored.AV- 5 9
ECU PART NUMBER The part number of NAVI control unit can be checked.AV- 6 0
SKIB3672E
SKIB3673E
SKIB3674E

AV-60
DIAGNOSIS SYSTEM
AUDIO
lWhen “AUDIO” is selected, the communication condition from
audio unit to each unit and malfunction counter are displayed.
lError counter displays OK if any malfunction is not detected in
the past. If the malfunction is detected, it displays 0. When turn-
ing the ignition switch ON, if it is normal, it displays 1. The upper
limitofthecounteris39.
ECU PART NUMBER
The part number of NAVI control unit is displayed.
ItemsDisplay
(PRESENT)Malfunction
counter
(PAST)
TRANSMIT DG OK / UNKWN OK / 0 - 39
SPEAKER AMP — —
TV TUNER — —
DVD PLAYER — —
MD DECK — —
CD CHANGER — —
MD CHANGER — —
SKIB4685E
SKIB3680E