light NISSAN NAVARA 2005 Repair User Guide

ATC-98
TROUBLE DIAGNOSIS
High-pressure Side is Too Low and Low-pressure Side is Too High
Both High- and Low-pressure Sides are Too Low
Gauge indication Refrigerant cycle Probable cause Corrective action
High-pressure side is too low and
low-pressure side is too high.High- and low-pressure sides
become equal soon after com-
pressor operation stops.Compressor pressure opera-
tion is improper.
¯
Damaged inside compressor
packings.Replace compressor.
No temperature difference
between high- and low-pres-
sure sides.Compressor pressure opera-
tion is improper.
¯
Damaged inside compressor
packings.Replace compressor.
AC356A
Gauge indication Refrigerant cycle Probable cause Corrective action
Both high- and low-pressure sides
are too low.
lThere is a big temperature
difference between liquit
tand outlet and inlet. Outlet
temperature is extremely
low.
lLiquid tank inlet and expan-
sion valve are frosted.Liquid tank inside is slightly
clogged.
lReplace liquid tank.
lCheck lubricant for contami-
nation.
lTemperature of expansion
valve inlet is extremely low
as compared with areas
near liquid tank.
lExpansion valve inlet may
be frosted.
lTemperature difference
occurs somewhere in high-
pressure side.High-pressure pipe located
between liquit tank and expan-
sion valve is clogged.
lCheck and repair malfunc-
tioning parts.
lCheck lubricant for contami-
nation.
Expansion valve and liquid
tank are warm or only cool
when touched.Low refrigerant charge.
¯
Leaking fittings or compo-
nents.Check refrigerant system for
leaks. Refer toATC-150,
"Checking for Refrigerant
Leaks".
There is a big temperature dif-
ference between expansion
valve inlet and outlet while the
valve itself is frosted.Expansion valve closes a little
compared with the specifica-
tion.
¯
1. Improper expansion valve
adjustment.
2. Malfunctioning expansion
valve.
3. Outlet and inlet may be
clogged.
lRemove foreign particles by
using compressed air.
lCheck lubricant for contami-
nation.
An area of the low-pressure
pipe is colder than areas near
the evaporator outlet.Low-pressure pipe is clogged
or crushed.
lCheck and repair malfunc-
tioning parts.
lCheck lubricant for contami-
nation.
Air flow volume is too low. Evaporator is frozen.
lCheck intake sensor circuit.
Refer toAT C - 11 4 , "
Intake
Sensor Circuit".
lReplace compressor.
lRepair evaporator fins.
lReplace evaporator.
lRefer toAT C - 8 0 , "Blower
Motor Circuit".
AC353A

ATC-112
TROUBLE DIAGNOSIS
Optical Sensor Circuit
EJS006BY
COMPONENT DESCRIPTION
The optical sensor is located in the center of the defroster grille. It
detects sunload entering through windshield by means of a photo
diode. The sensor converts the sunload into a current value which is
then input into the front air control.
OPTICAL INPUT PROCESS
The front air control includes a processing circuit which averages the variations in detected sunload over a
period of time. This prevents adjustments in the ATC system operation due to small or quick variations in
detected sunload.
For example, consider driving along a road bordered by an occasional group of large trees. The sunload
detected by the optical sensor will vary whenever the trees obstruct the sunlight. The processing circuit aver-
ages the detected sunload over a period of time, so that the (insignificant) effect of the trees momentarily
obstructing the sunlight does not cause any change in the ATC system operation. On the other hand, shortly
after entering a long tunnel, the system will recognize the change in sunload, and the system will react accord-
ingly.
DIAGNOSTIC PROCEDURE FOR SUNLOAD SENSOR
SYMPTOM: Sunload sensor circuit is open or shorted. (44 or 46 is
indicated on front air control as a result of conducting self-diagnosis).
1.CHECK CIRCUIT CONTINUITY BETWEEN SUNLOAD SENSOR AND FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disconnect front air control connector and sunload sensor con-
nector.
3. Check continuity between sunload sensor harness connector
M63 terminal 1 and 2 and front air control harness connector
M61 terminal 29 and 37.
4. Check continuity between sunload sensor harness connector
M63 terminal 1 and 2 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair harness or connector.
MJIB0172E
MJIB0181E
1 - 29 : Continuity should exist.
2 - 37 : Continuity should exist.
1, 2 - Ground. : Continuity should not exist.
MJIB0086E

ATC-150
REFRIGERANT LINES
CAUTION:
Replace the O-rings on the A/C low-pressure flexible A/C hose and the high-pressure A/C pipe with
new ones. Apply compressor oil to the O-rings for installation.
Removal and Installation for Expansion ValveEJS006CZ
REMOVAL
1. Discharge the refrigerant. Refer toATC-138, "HFC-134a (R-134a) Service Procedure".
2. Remove the heater and cooling unit assembly. Refer toATC-126, "
REMOVAL".
3. Remove the heater core and evaporator pipes grommet.
4. Remove the expansion valve.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
lReplace the O-rings on then expansion valve and the A/C refrigerant pipes with new ones, then
apply compressor oil to them for installation.
lAfter charging refrigerant, check for leaks.
Checking for Refrigerant LeaksEJS006D1
Perform a visual inspection of all refrigeration parts, fittings, hoses and components for signs of A/C lubricant
leakage, damage and corrosion. A/C lubricant leakage may indicate an area of refrigerant leakage. Allow
extra inspection time in these areas when using either an electronic refrigerant leak detector or fluorescent
dye leak detector.
If dye is observed, confirm the leak with an electronic refrigerant leak detector. It is possible a prior leak was
repaired and not properly cleaned.
When searching for leaks, do not stop when one leak is found but continue to check for additional leaks at all
system components and connections.
When searching for refrigerant leaks using an electronic leak detector, move the probe along the suspected
leak area at 1 to 2 inches per second and no further than 1/4 inch from the component.
CAUTION:
Moving the electronic leak detector probe slower and closer to the suspected leak area will improve
the chances of finding a leak.
Checking System for Leaks Using the Fluorescent Leak DetectorEJS006D2
1. Check A/C system for leaks using the UV lamp and safety goggles [SST: J-42220] in a low sunlight area
(area without windows preferable). Illuminate all components, fittings and lines. The dye will appear as a
bright green/yellow area at the point of leakage. Fluorescent dye observed at the evaporator drain open-
ing indicates an evaporator core assembly (tubes, core or expansion valve) leak.
2. If the suspected area is difficult to see, use an adjustable mirror or wipe the area with a clean shop rag or
cloth, with the UV lamp for dye residue.
3. After the leak is repaired, remove any residual dye using dye cleaner [SST: J-43872] to prevent future mis-
diagnosis.
4. Perform a system performance check and verify the leak repair with an approved electronic refrigerant
leak detector.
NOTE:
Other gases in the work area or substances on the A/C components, for example, anti-freeze, windshield
washer fluid, solvents and lubricants, may falsely trigger the leak detector. Make sure the surfaces to be
checked are clean.
Cleanwithadryclothorblowoffwithshopair.
Do not allow the sensor tip of the detector to contact with any substance. This can also cause false readings
and may damage the detector.Expansion valve bolts : 4 N·m (0.41 kg-m, 35 in-lb)
A/C refrigerant pipe to expansion valve bolt : Refer toATC-140, "
Components"
.

AV-34
TERMINALS AND REFERENCE VALUE FOR CONTROL UNIT
TERMINALS AND REFERENCE VALUE FOR CONTROL UNIT
PFP:00000
Audio Unit (1CD Player Type)EKS00Q6B
Te r m i n a l
(Wire color)
ItemSignal
input/
outputCondition
Reference value
+-Ignition
switchOperation
2
(O)Ground Illumination signal Input ONLighting switch is ON. Approx. 12 V
Lighting switch is OFF. Approx. 0 V
3
(Y)Ground Battery power supply Input ON – Battery voltage
4
(Y)–TELmute – – – –
6
(V)Ground ACC power supply Input ACC – Battery voltage
7
(BR)5
(L)Audio signal front LH Output ON Sound output
8
(W)GroundVehicle speed signal
(2-pulse)Input ONWhen vehicle speed is
approx. 40 km/h (25
MPH).
9
(L)10
(V)Audio signal rear LH Output ON Sound output
12
(SB)– Immobilizer – – – –
13
(LG)11
(V)Audio signal front RH Output ON Sound output
15
(GR)16
(V)Audio signal rear RH Output ON Sound output
19
(W)–TELin(-) – – – –
SKIB1990E
ELF1080D
SKIB1990E
SKIB1990E
SKIB1990E

TERMINALS AND REFERENCE VALUE FOR CONTROL UNIT
AV-35
C
D
E
F
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MA
B
AV
Audio Unit (6CD Player Type) Without NAVIEKS00Q6C
20
(P)22
(L)Remote control signal A Input ONKeep pushing MODE
switch.Approx. 0 V
Keep pushing SEEK
UP switch.Approx. 1.7 V
Keep pushing VOL UP
switch.Approx. 3.3 V
Except for above. Approx. 5 V
21
(W)22
(L)Remote control signal B Input ONKeep pushing POWER
switch.Approx. 0 V
Keep pushing SEEK
DOWN switch.Approx. 1.7 V
Keep pushing VOL
DOWN switch.Approx. 3.3 V
Except for above. Approx. 5 V
22
(L)Ground Remote control ground – ON – Approx. 0 V
24
(L)–TELin(+) – – – – Terminal
(Wire color)
ItemSignal
input/
outputCondition
Reference value
+-Ignition
switchOperation
Terminal
(Wire color)
ItemSignal
input/
outputCondition
Reference value
+-Ignition
switchOperation
2
(BR)1
(L)Audio signal front LH Output ON Sound output
4
(LG)3
(V)Audio signal front RH Output ON Sound output
6
(Y)Ground Battery power supply Input ON – Battery voltage
8
(O)Ground Illumination signal Input ONLighting switch is ON. Approx. 12 V
Lighting switch is OFF. Approx. 0 V
10
(V)Ground ACC power supply Input ACC – Battery voltage
SKIB1990E
SKIB1990E

TERMINALS AND REFERENCE VALUE FOR CONTROL UNIT
AV-37
C
D
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F
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MA
B
AV
Audio Unit (With NAVI)EKS00Q6D
Terminal
(Wire color)
ItemSignal
input/
outputCondition
Reference value
+-Ignition
switchOperation
3
(Y)–Communication
signal (H)Input/
output–– –
4
(R)–Communication
signal (L)Input/
output–– –
10
(W)11
(O)TEL voice signal Input ON TEL voice output
12
(O)13
(W)Voice guidance signal Input ON Voice guidance output
17 Ground Shield (TEL voice) – ON – Approx. 0 V
18 Ground Shield (Guide voice) – ON – Approx. 0 V
22
(BR)23
(L)Audio signal front LH Output ON Sound output
24
(L)25
(V)Audio signal rear LH Output ON Sound output
26
(P)35
(L)Remote control signal A Input ONKeep pushing SOURCE
switch.approx. 0 V
Keep pushing MENU
UP switch.Approx. 1.2 V
Keep pushing MENU
DOWN switch.Approx. 2.5 V
Keep pushing ENTER
switch.Approx. 3.7 V
Except for above. Approx. 5 V
27
(V)Ground ACC power supply Input ACC – Battery voltage
28
(B)GroundIllumination control sig-
nalInput ONIllumination control
switch is operated by
lighting switch in ON
positionChanges between approx. 0 V
and approx. 12 V
SKIB1990E
SKIB1990E
SKIB1990E
SKIB1990E

AV-38
TERMINALS AND REFERENCE VALUE FOR CONTROL UNIT
NAVI Control Unit
EKS00Q6E
29
(O)Ground Illumination signal Input ONLighting switch is ON. Approx. 12 V
Lighting switch is OFF. Approx. 0 V
31
(LG)32
(V)Audio signal front RH Output ON Sound output
33
(GR)34
(V)Audio signal rear RH Output ON Sound output
36
(W)35
(L)Remote control signal B Input ONKeep pushing VOL
DOWN switch.Approx. 0 V
Keep pushing VOL UP
switch.Approx. 1.2 V
Keep pushing TEL, PTT
switch.Approx. 2.5 V
Keep pushing BACK
switch.Approx. 3.7 V
Except for above. Approx. 5 V
39
(Y)Ground Battery power supply Input ON – Battery voltage Terminal
(Wire color)
ItemSignal
input/
outputCondition
Reference value
+-Ignition
switchOperation
SKIB1990E
SKIB1990E
Terminal
(Wire color)
ItemSignal
input/
outputCondition
Reference value
+-Ignition
switchOperation
1
(B)Ground Ground – ON – Approx. 0 V
2
(Y)Ground Battery power supply Input ON – Battery voltage
5
(V)Ground ACC power supply Input ACC – Battery voltage
6
(B)Ground MIC. power supply Output ON – Approx. 5 V
7 Ground Shield (MIC.) – ON – Approx. 0 V
8
(W)Ground MIC. signal Input ON Sounds
9 Ground Shield (TEL voice) – ON – Approx. 0 V
PKIB5037J

AV-40
TERMINALS AND REFERENCE VALUE FOR CONTROL UNIT
50
(G)Ground RGB area (YS) signal Output ONSet the selector lever in
R position, and then
display the rear view
image.
Other than the above.
51
(R)GroundHorizontal
synchronizing (HP) sig-
nalInput ONSet the selector lever in
R position, and then
display the rear view
image.
52
(W)GroundVertical synchronizing
(VP) signalInput ONSet the selector lever in
R position, and then
display the rear view
image.
53
(W)GroundCommunication
signal (CONT-DISP)Output ONImage quality adjust-
ment
54
(O)GroundCommunication
signal (DISP-CONT)Input ONImage quality adjust-
ment
55 Ground Shield – ON – Approx. 0 V
61
(G)Ground Illumination signal Input ONLighting switch is ON. Approx. 12 V
Lighting switch is OFF. Approx. 0 V
63
(R)Ground Ignition signal Input ON – Battery voltage
64
(G)Ground Parking brake signal Input ONParking brake ON Approx. 0 V
Parking brake OFF Approx. 12 V Terminal
(Wire color)
ItemSignal
input/
outputCondition
Reference value
+-Ignition
switchOperationSKIB3599E
SKIB3600E
SKIB3601E
SKIB3598E
PKIB5039J
PKIB5039J

AV-44
DIAGNOSIS SYSTEM
DIAGNOSIS SYSTEM
PFP:00000
Navigation System Diagnosis FunctionEKS00Q6H
lThere are 2 diagnosis functions (on board diagnosis and diagnosis using CONSULT-II), and it is neces-
sary to use them properly according to the condition. If the on board diagnosis starts, perform diagnosis
with on board diagnosis. If the on board diagnosis does not start (the cause being that the system is not
started, the switch operation is not activated, etc.), perform diagnosis using CONSULT-II.
lAt on board diagnosis, the NAVI control unit diagnosis function starts by switch operation and the NAVI
control unit performs the diagnosis for each unit of system.
lAt diagnosis using CONSULT-II, the NAVI control unit diagnosis function starts by the communication
between CONSULT-II and NAVI control unit, and the NAVI control unit performs the diagnosis for each
unit of system.
On Bord Self-Diagnosis FunctionEKS00Q6I
DESCRIPTION
lThe on board diagnosis function has a self-diagnosis mode for performing trouble diagnosis automatically
and a Confirmation/Adjustment mode for operating manually.
lSelf-diagnosis mode performs the diagnosis at NAVI control unit, connections between each unit that
composes the system, and connections between NAVI control unit and GPS antenna. It displays the
results on the display.
lConfirmation/Adjustment mode is used to monitor the vehicle signals requiring operation and judgement
by a technician (malfunctions that cannot be automatically judged by the system), the confirmation/adjust-
ment of setting value, the error history of system, and the communication condition of system.
DIAGNOSIS ITEM
Mode Description
Self Diagnosis
lNAVI control unit diagnosis (DVD-ROM drive will not be diagnosed when
no map DVD-ROM is in it.)
lThe connection diagnosis between NAVI control unit and GPS antenna
and the connection diagnosis between NAVI control unit and each unit
can be performed.
Confirma-
tion/Adjust-
mentDisplay DiagnosisThe tint can be confirmed by the color spectrum bar display. The shading
of color can be confirmed by the gradation bar display.
Vehicle SignalsDiagnosis of signals can be performed for vehicle speed, parking brake,
lights, ignition (ignition switch), and reverse.
Speaker Test The connection of a speaker can be confirmed by test tone.
NavigationSteering Angle
AdjustmentWhen there is a difference between the actual turning angle and the vehi-
cle mark turning angle, it can be adjusted.
Speed CalibrationWhen there is a difference between the current location mark and the
actual location, it can be adjusted.
Error HistoryThe system malfunction and its frequency that occurred in the past are dis-
played. When the malfunctioning item is selected, the time and place that
the selected malfunction last occurred are displayed.
Vehicle CAN Diagnosis The transmitting/receiving of CAN communication can be monitored.
AV COMM DiagnosisThe communication condition of each unit that composes the system can
be monitored.
Handsfree PhoneEach setting of hands-free volume adjustment, voice microphone test,
delete hands-free memory can be performed.
Bluetooth Passkey and device name can be confirmed/changed.
Delete Unit Commection Log The connection history and error history of unit can be deleted.

DIAGNOSIS SYSTEM
AV-49
C
D
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F
G
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MA
B
AV
SCREEN TROUBLE DIAGNOSIS
lIf RGB signal is malfunctioning, the tint of the color bar display is as follows.
VEHICLE SIGNALS
Acomparisoncheckcanbemadeofeachactualvehiclesignaland
the signals recognized by the system.
SKIB3662E
R (red) signal error : Light blue (Cyan) tint
G (green) signal error : Purple (Magenta) tint
B (blue) signal error : Yellow tint
SKIB3663E
Diagnosis itemDis-
playVehicle status Remarks
Vehicle speedON Vehicle speed > 0 km/h
Changes in indication may be delayed. This is normal. OFF Vehicle speed = 0 km/h
– Ignition switch ACC
Parking brakeON Parking brake is applied.
OFF Parking brake is released.
LightsON Lighting switch ON
–
OFF Lighting switch OFF
IgnitionON Ignition switch ON
–
OFF Ignition switch ACC
ReverseON Selector lever in R position
Changes in indication may be delayed. This is normal. OFFSelector lever in any position
other than R
– Ignition switch ACC