ignition INFINITI FX35 2004 Service Manual

NAVIGATION SYSTEM
AV-123
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Revision: 2004 November 2004 FX35/FX45
Terminals and Reference Value for Display Control UnitAKS00BMZ
Terminal
(Wire color)
ItemSignal
input/
outputCondition
Reference valueExample of
symptom
+–Igni-
tion
switchOperation
1 (W/L) GroundBattery
Power supplyInput OFF – Battery voltageSystem does not
work properly.
2 (W/G) GroundPower Sup-
ply (Inverter) Output ON – Approx. 9VScreen is not
shown
3 (B) Ground Ground – ON – Approx. 0V –
4 (BR/W) GroundPower Sup-
ply (Signal) Output ON – Approx. 9VScreen is not
shown
5 (P) Ground(Inverter)
Ground – ON – Approx. 0VScreen is not
shown
6 (OR) GroundReverse
signalInput ONSelector lever in R
positionApprox. 12V
Impossible to
gain direction of
vehicle. Selector lever
except R positionApprox. 0V
7 (P/L) Ground(Signal)
Ground – ON – Approx. 0V –
10 (LG/R) GroundACC power
supplyInput ACC – Battery voltageSystem does not
work properly.
12 (G/R) Ground Ignition signal Input ON – Battery voltageA/C operation is
not possible.
Vehicle informa-
tion setting is not
possible.
13 (B) Ground sysco – ON – Approx. 0V –
14 (R/L) GroundIllumination
signalInput OFFLighting switch is
ON.Approx. 12VAudio unit illumi-
nation does not
come on when
lighting switch is
ON. Lighting switch is
OFF.Approx. 0V
16 (R/G) GroundVehicle
speed signal
(8–pulse)Input ONWhen vehicle speed
is approx. 40 km/h
(25 MPH)Value of vehicle
information is
not accurately
displayed.
25 (L) – CAN H – – – – –
26 (R) – CAN L – – – – –
28 (B/R) GroundCommunica-
tion signal (+)Input/
OutputON –System does not
work properly.
29 –Shield
ground–– – – –
PKIA1935E
SKIA0175E

NAVIGATION SYSTEM
AV-127
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Revision: 2004 November 2004 FX35/FX45
Terminals and Reference Value for DisplayAKS00BN0
Terminal
(Wire color)
ItemSignal
input/
outputCondition
Reference valueExample of
symptom
+–Ignition
switchOperation
1 (B) Ground Ground – ON – Approx. 0V –
2 (W/G) GroundPower supply
(Inverter) Input ON – Approx. 9VScreen is not
shown
3 (BR/W) GroundPower supply
(Signal) Input ON – Approx. 9VScreen is not
shown
6 (L/W) 7RGB signal (G:
green)Input ONSelect “Display
Diagnosis (DCU)”
of CONFIRMA-
TION/ADJUST-
MENT function.RGB screen
looks reddish.
7 – Shield ground – – – – –
8 (R) 21Horizontal syn-
chronizing (HP)
signalOutput ON –RGB screen
is not shown.
9 (B) 21RGB area (YS)
signalInput ONPress the “TRIP”
button.Rear view is
not displayed.
11 ( P U ) 2 3Display communi-
cation signal
(DCU-DSP)Input ON –Though a
screen is dis-
played, it is
impossible to
adjust bright-
ness.
13 (P) Ground(Inverter)
Ground – ON – Approx. 0V –
14 (P/L) Ground(Signal)
Ground – ON – Approx. 0V –
17 (L/R) 7RGB signal (R:
red)Input ONSelect “Display
Diagnosis (DCU)”
of CONFIRMA-
TION/ADJUST-
MENT function.RGB screen
looks bluish.
SKIA4981E
SKIA4983E
SKIA0162E
SKIA4364E
SKIA4980E

AV-128
NAVIGATION SYSTEM
Revision: 2004 November 2004 FX35/FX45
18 (L) 7RGB signal (B:
blue)Input ONSelect “Display
Diagnosis (DCU)”
of CONFIRMA-
TION/ADJUST-
MENT function.RGB screen
looks yellow-
ish.
19 (G) 21RGB synchroniz-
ing signalInput ONPress the “TRIP”
button.NAVI screen
is rolling.
20 (W) 21Vertical synchro-
nizing (VP) signalOutput ONSelector lever in
R position.Rear view
monitor
screen is roll-
ing.
21 – Shield ground – – – – –
22 (LG) 23Display communi-
cation signal
(DSP-DCU)Output ON –Though a
screen is dis-
played, it is
impossible to
adjust bright-
ness.
23 – Shield ground – – – – –Terminal
(Wire color)
ItemSignal
input/
outputCondition
Reference valueExample of
symptom
+–Ignition
switchOperation
SKIA4982E
SKIA0164E
SKIA0161E
SKIA4363E

AV-130
NAVIGATION SYSTEM
Revision: 2004 November 2004 FX35/FX45
On Board Self-Diagnosis FunctionAKS00BN2
DESCRIPTION

Diagnosis function consists of the self-diagnosis mode performed automatically and the CONFIRMATION/
ADJUSTMENT mode operated manually.

Self-diagnosis mode checks for connections between the units constituting this system, analyzes each
individual unit at the same time, and displays the results on the LCD screen.

CONFIRMATION/ADJUSTMENT mode is used to perform trouble diagnosis that require operation and
judgment by an operator (malfunction that cannot be automatically judged by the system), to check/
change the set value, and to display the History of Errors of the navigation system.
DIAGNOSIS ITEM
NOTE:
Make the status that is set by D/N function be shown.
Mode Description
Self-diagnosis (DCU) Display control unit diagnosis
Self-diagnosis (NAVI)

NAVI Control unit diagnosis (DVD-ROM drive will not be diagnosed
when no map DVD-ROM is in it)

Analyzes connection between the NAVI control unit and the GPS
antenna connection between the NAVI control unit and each unit, and
operation of each unit.
Confirmation/
AdjustmentDisplay diagnosisOn display control unit mode, color tone and shading of the screen can be
checked by the display of a color bar and a gray scale.
Vehicle signalsOn display control unit mode, analyzes the following vehicle signals: Vehi-
cle speed signal, light signal
NOTE , ignition switch signal, and reverse sig-
nal.
Auto Climate Control A/C self-diagnosis of A/C system.
NavigationDisplay diagnosisOn NAVI C/U mode, color tone and shading of the screen can be checked
by the display of a color bar and a gray scale.
Vehicle signalsOn NAVI C/U mode, analyzes the following vehicle signals: Vehicle speed
signal, light signal, ignition switch signal, and reverse signal.
History of ErrorsDiagnosis results previously stored in the memory (before turning ignition
switch ON) are displayed in this mode. Time and location when/where the
errors occurred are also displayed.
Naviga-
tionDisplay Lon-
gitude & Lat-
itudeDisplay the map. Use the joystick to adjust position. Longitude and latitude
will be displayed.
Speed Cali-
brationUnder ordinary conditions, the navigation system distance measuring
function will automatically compensate for minute decreases in wheel and
tire diameter caused by tire wear or low -pressure. Speed calibration
immediately restores system accuracy in cases such as when distance
calibration is needed because of the use of tire chains in inclement
weather.
Angle
adjustmentCorrects difference between actual turning angle of a vehicle and turning
angle of the car mark on the display.
Initialize
LocationThis mode is for initializing the current location. Use when the vehicle is
transported a long distance on a trailer, etc.
CAN DIAG SUPPOPT MONITOR Display status of CAN communication.

NAVIGATION SYSTEM
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Revision: 2004 November 2004 FX35/FX45
SELF–DIAGNOSIS RESULT
Quick reference table
1. Select a malfunctioning diagnosis No. in the diagnosis result quick reference table.
2. Find estimated malfunctioning system in the diagnosis No. table and perform check by referring to AV-
11 6 , "Wiring Diagram — COMM —" .
3. Turn the ignition switch OFF and perform self-diagnosis again.
*: DCU = Display control unit
CAUTION:

When A/C and AV switch has a malfunction, you cannot start. Refer to AV- 1 7 1 , "Unable to Oper-
ate All of A/C and AV switch (Unable to start Self-Diagnosis)" .

When display has a malfunction, you cannot start. Refer to AV- 1 6 7 , "Screen is Not Shown" .
Self-Diagnosis Codes
Self-Diagnosis Mode (NAVI)AKS00BN4
OPERATION PROCEDURE
1. Start the engine.
2. Turn the audio system off.
3. While pressing the “MUTE/II ” button, turn the volume control
dial clockwise or counterclockwise for 30 clicks or more. (When
the self-diagnosis mode is started, a short beep will be heard.)

Shifting from current screen to previous screen is performed
by pressing “PREV” button.
4. The initial trouble diagnosis screen will be shown, and items
“Self-Diagnosis (DCU)”, “Self-Diagnosis (NAVI)”, “Confirmation/
Adjustment” and “CAN DIAG SUPPORT MONITOR” will
become selective.
Screen switch
Diagnosis
No.
Switch color DCU* Display Audio unit NavigationGPS
antenna
Red×1
Gray××2
××3
×××4
Diagnosis
No.Possible causeReference
page
1 Display control unit malfunctionAV-183
2 Display communication line between display control unit and display. AV-156
3Audio unit power supply and ground circuit.
Audio communication line between display control unit and audio unit.AV-154
4NAVI control unit power supply and ground circuit.
AV communication line between and display control unit and NAVI control unit.AV-153
SKIA4971E
SKIA4207E

NAVIGATION SYSTEM
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Revision: 2004 November 2004 FX35/FX45
SELF–DIAGNOSIS RESULT
Quick Reference Table
1. Select an malfunctioning diagnosis number. in the diagnosis result quick reference table.
2. Find estimated malfunctioning system in the diagnosis number. table and perform check by referring to
AV- 11 6 , "
Wiring Diagram — COMM —" .
3. Turn the ignition switch OFF and perform self-diagnosis again.
*: Navigation = NAVI control unit
CAUTION:

When A/C and AV switch has a malfunction, you cannot start. Refer to AV- 1 7 1 , "Unable to Operate
All of A/C and AV switch (Unable to start Self-Diagnosis)" .

When display has a malfunction, you cannot start. Refer to AV- 1 6 7 , "Screen is Not Shown" .
Self-diagnosis Codes
Screen switch
Diagnosis No.
Switch color Navigation* GPS antenna
Red×1
Gray×2
Yellow×3
×4
××5
Diagnosis
No.Possible causeReference
page
1 NAVI control unit malfunctionRefer to
AV-182
2 No map DVD-ROM is inserted in the NAVI control unit.Refer to
AV-158
3When “DVD-ROM error. Please check disc.” is shown.
1. Eject map DVD-ROM and check if it is compatible with the system.
2. Check ejected DVD-ROM for dirt, damage, and warpage.
3. If no error is found, insert a known good map DVD-ROM of the same type and perform self-diagno-
sis again. If same result is shown, the NAVI control unit is malfunctioning. If result is normal, the map
DVD-ROM is malfunctioning.Refer to
AV-158
4If “Error found in DVD-ROM or DVD-ROM driver in control unit. Please perform diagnosis in accor-
dance with service manual” is shown, carry out same inspection as diagnosis No. 3.Refer to
AV-158
5GPS antenna system
1. Visually check for a broken wire in the GPS antenna coaxial cable.
2. Disconnect GPS antenna connector, and make sure approximately 5V is supplied from the NAVI
control unit. If not, the NAVI control unit is malfunctioning. If 5V is supplied, replace the GPS
antenna. If the connection is still malfunction after the replacement of the GPS antenna, the NAVI
control unit is malfunctioning.Refer to
AV-159

NAVIGATION SYSTEM
AV-137
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Revision: 2004 November 2004 FX35/FX45

When RGB signal error occurred in the RGB system, tone of the color bar will change as follows.

When the color of the screen looks unusual, refer to AV- 1 6 2 , "Color of RGB Image is Not Proper (All
screens Looks Bluish)" ,AV- 1 6 3 , "Color of RGB Image is Not Proper (All Screens Looks Reddish)" and
AV- 1 6 4 , "
Color of RGB Image is Not Proper (All Screens Looks Yellowish)" .
VEHICLE SIGNALS

A comparison check can be made of each actual vehicle signal
and the signals recognized by the system.
CAUTION:
In case of confirming light signal, set D/N mode to ON/OFF
of lighting switch (normal setting).

OFF: D (Day mode)

ON: N (Night mode)
Unless above setting, light signal (ON/OFF) may not be
accurately displayed.

If vehicle speed is NG, refer to AV- 1 5 0 , "Vehicle Speed Signal Check for Display Control Unit" .

If light is NG, refer to AV- 1 5 2 , "Illumination Signal Check for Display Control Unit" .

If IGN is NG, refer to AV- 1 5 2 , "Ignition Signal Check for Display Control Unit" .

If reverse is NG, refer to AV- 1 5 3 , "Reverse Signal Check for Display Control Unit" .
AUTO CLIMATE CONTROL

Refer to ATC Automatic Air Conditioner AT C - 5 3 , "Self-diagnosis Function" for details. R (red) signal error : Screen looks bluish
G (green) signal error : Screen looks reddish
B (blue) signal error : Screen looks yellowish
SKIA5628E
Diagnosis item Display Condition Remarks
Vehicle speedON Vehicle speed > 0 MPH (0 km/h)
Changes in indication may be delayed by
approx. 1.5 seconds. This is normal. OFF Vehicle speed = 0 MPH (0 km/h)
– Ignition switch in ACC position
IGNON Ignition switch ON
–
OFF Ignition switch ACC
ReverseON Selector lever in R position
Changes in indication may be delayed by
approx. 1.5 seconds. This is normal. OFF Selector lever except R position
– Ignition switch in ACC position
LightON Lighting switch ON
–
OFF Lighting switch OFF

NAVIGATION SYSTEM
AV-139
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Revision: 2004 November 2004 FX35/FX45
VEHICLE SIGNALS

A comparison check can be made of each actual vehicle signal
and the signals recognized by the system.
CAUTION:
In case of confirming light signal, set D/N mode to ON/OFF
of light switch (normal setting).

OFF: D (Day mode)

ON: N (Night mode)
Unless above setting, light signal (ON/OFF) may not be
accurately displayed.

If vehicle speed is NG, refer to AV- 1 4 9 , "Vehicle Speed Signal Check for NAVI Control Unit" .

If light is NG, refer to AV- 1 5 1 , "Illumination Signal Check for NAVI Control Unit" .

If IGN is NG, refer to AV- 1 5 2 , "Ignition Signal Check for NAVI Control Unit" .

If reverse is NG, refer to AV- 1 5 2 , "Reverse Signal Check for NAVI Control Unit" .
HISTORY OF ERRORS
SKIA5628E
Diagnosis item Display Condition Remarks
Vehicle speedON Vehicle speed > 0 MPH (0 km/h)
Changes in indication may be delayed by
approx. 1.5 seconds. This is normal. OFF Vehicle speed = 0 MPH (0 km/h)
– Ignition switch in ACC position
IGNON Ignition switch ON
–
OFF Ignition switch ACC
ReverseON Selector lever in R position
Changes in indication may be delayed by
approx. 1.5 seconds. This is normal. OFF Selector lever except R position
– Ignition switch in ACC position
LightON Lighting switch ON
–
OFF Lighting switch OFF
SKIA0366E

AV-140
NAVIGATION SYSTEM
Revision: 2004 November 2004 FX35/FX45
DIAGNOSIS BY HISTORY OF ERRORS
The “Self-diagnosis” results indicate whether an error occurred during the period from when the ignition switch
is turned to ON until “Self-diagnosis” is completed.
If an error occurred before the ignition switch was turned to ON and does not occur again until the “Self-diag-
nosis” is completed, the diagnosis result will be judged normal. Therefore, those errors in the past, which can-
not be found by the “Self-diagnosis”, must be found by diagnosing the “History of Errors”.
The History of Errors displays the time and place of the most recent occurrence of that error. However, take
note of the following points.

Correct time of the error occurrence may not be displayed when the GPS antenna substrate within the
NAVI control unit has malfunctioned.

Place of the error occurrence is represented by the position of the current-location mark at the time when
the error occurred. If the current-location mark has deviated from the correct position, then the place of
the error occurrence max be located correctly.

The maximum number of occurrences which can be stored is 50. For the 51st and later occurrences, the
displayed number remains 50.
When a reproducible malfunction occurred but its cause cannot be identified because several errors are
present, record the item, number and place (longitude/latitude) of error occurrence (or delete the History of
Errors), then turn the ignition switch from OFF to ON to reproduce the malfunction. Check the History of Errors
to find the items which show an increased number of occurrences, and diagnose the item.
Error itemPossible causes
Example of symptom
Action/symptom
Gyro sensor
disconnectedCommunications malfunction between NAVI control unit and inter-
nal gyro

Navigation location detection performance
has deteriorated.
(Angular velocity cannot be detected.)
Perform self-diagnosis.

When the NAVI control unit is judged normal by self-diagnosis,
the symptom may be intermittent, caused by strong radio inter-
ference.
GPS discon-
nectedCommunication error between NAVI control unit and internal GPS
substrate

Navigation location detection performance
has deteriorated.
(Location correction using GPS is not per-
formed.)

GPS receiving status remains gray.

Perform self-diagnosis.

When the NAVI control unit is judged normal by self-diagnosis,
the symptom may be intermittent, caused by strong radio inter-
ference.
GPS trans-
mission cable
malfunctionMalfunctioning transmission wires to NAVI control unit and internal
GPS substrate

During self-diagnosis, GPS diagnosis is not
performed.
Perform self-diagnosis.

When the NAVI control unit is judged normal by self-diagnosis,
the symptom may be intermittent, caused by strong radio inter-
ference.
GPS input
line connec-
tion errorMalfunctioning receiving wires to NAVI control unit and internal
GPS substrate

Navigation location detection performance
has deteriorated.
(Location correction using GPS is not per-
formed.)

GPS receiving status remains gray.

Perform self-diagnosis.

When the NAVI control unit is judged normal by self-diagnosis,
the symptom may be intermittent, caused by strong radio inter-
ference.
GPS TCX0
over
GPS TCX0
underOscillating frequency of the GPS substrate frequency synchroniz-
ing oscillation circuit exceeded (or below) the specification

Navigation location detection performance
has deteriorated.
(Location correction using GPS is not per-
formed.)

GPS receiving status remains gray.

Perform self-diagnosis.

When the NAVI control unit is judged normal by self-diagnosis,
the symptom may be intermittent, caused by strong radio inter-
ference, or the control unit may have been subjected to exces-
sively high or low temperatures.

AV-144
NAVIGATION SYSTEM
Revision: 2004 November 2004 FX35/FX45
A/C and AV Switch Self-Diagnosis FunctionAKS00BN6
DESCRIPTION
It can check ON/OFF operation of each switch in the A/C and AV switch and diagnose the input signals to the
steering switch (audio).
Starting the SELF-DIAGNOSIS MODE
1. Turn ignition switch from OFF to ACC.
2. Within 10 seconds press and hold the witches “MUTE/II ” and
“PREV” simultaneously for 3 seconds.
Diagnosis Function

It can illuminate all the indicators (LED) in the A/C and AV switch.

It can check for continuity of the switches by sounding the buzzer when the A/C and AV switch is pressed.

It can check for continuity of harness between A/C and AV switch and steering switch (audio).
NOTE:

Indicators (LED) of REC/FRE switch change to “FRE” → “REC” → “FRE” every time the REC/FRE switch
is pushed. (These two do not turn on at a time.)

Impossible to check rear window defogger switch operation (No beep sound even under normal status).
Exiting the SELF-DIAGNOSIS MODE

Turn ignition switch OFF.
SKIB0314E