2008 INFINITI FX35 ESP

ATC-58
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
SYSTEM DESCRIPTION
Component Parts
Mode door control system components are:
 Unified meter and A/C amp.
 Mode door motor (LCU)
 A/C LAN system (PBR built-in mode door motor, air mix door motor and intake door motor)
 In-vehicle sensor
 Ambient sensor
 Sunload sensor
 Intake sensor
System Operation
The unified meter and A/C amp. receives data from each of the sensors. The unified meter and A/C amp.
sends air mix door, mode door and intake door opening angle data to the air mix door motor LCUs, mode door
motor LCU and intake door motor LCU.
The air mix door motors, mode door motor and intake door motor read their respective signals according to the
address signal. Opening angle indication signals received from the unified meter and A/C amp. and each of
the motor position sensors are compared by the LCUs in each door motor with the existing decision and open-
ing angles. Subsequently, HOT/COLD, DEF/VENT and FRE/ REC operation is selected. The new selection
data are returned to the unified meter and A/C amp.
Mode Door Control Specification
*1 ATC-29, "Discharge Air Flow"*2AT C - 5 0 , "Operational Check"*3ATC-43, "Self-Diagnosis Function",
see No. 4 to 6.
*4 ATC-86, "
Ambient Sensor Circuit"*5AT C - 8 8 , "In-vehicle Sensor Circuit"*6ATC-91, "Sunload Sensor Circuit"
*7 ATC-94, "Intake Sensor Circuit"*8AT C - 5 9 , "Air Mix Door Motor Circuit"*9ATC-43, "Self-Diagnosis Function",
see No. 13.
*10 ATC-54, "
LAN System Circuit"*11AT C - 11 3*12ATC-32, "How to Perform Trouble Di-
agnosis for Quick and Accurate Re-
pair"
SJIA1585E
RJIA1778E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

TROUBLE DIAGNOSISATC-61
< SERVICE INFORMATION >
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 Sunload sensor
 Intake sensor
System Operation
The unified meter and A/C amp. receives data from each of the sensors. The unified meter and A/C amp.
sends air mix door, mode door and intake door motor opening angle data to the air mix door motor LCUs,
mode door motor LCU and intake door motor LCU.
The air mix door motors, mode door motor and intake door motor read their respective signals according to the
address signal. Opening angle indication signals receiv ed from the unified meter and A/C amp. and each of
the motor position sensors are compared by the LCUs in each door motor with the existing decision and open-
ing angles. Subsequently, HOT/COLD, DEF/VENT and FRE/REC operation is selected. The new selection
data are returned to the unified meter and A/C amp.
Air Mix Door Control Specification
COMPONENT DESCRIPTION
Air Mix Door Motor
The air mix door motors are attached to the heater & cooling unit
assembly. It rotates so that the air mix door is opened or closed to a
position set by the unified meter and A/C amp. Motor rotation is then
conveyed through a shaft and the air mix door position feedback is
then sent to the unified meter and A/C amp. by PBR built-in air mix
door motor.
RJIA1781E
RJIA1782E
RJIA0893E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

AV-52
< SERVICE INFORMATION >
INTEGRATED DISPLAY SYSTEM
INTEGRATED DISPLAY SYSTEM
System DescriptionINFOID:0000000001328710
For system operation information, refer to Owner's Manual.
INTEGRATED DISPLAY SYSTEM
 Each control unit that comprises the system is connect ed with a communication circuit. It transmits/receives
data signals including request signals and response signals, and controls the system.
 The display control unit transmits/receives data signal s to/from each control unit with CAN communication. It
performs an arithmetical operation on fuel information va lues by using data obtained from the control units,
and then displays the calculated values on the screen.
 The display control unit receives door switch signals from the BCM with CAN communication, and displays a warning on the screen when driving over the set speed with a door half-shut.
 The display control unit receives vehicle speed signal s that are transmitted from the unified meter and A/C
amp., performs an arithmetical operation on drive information values, and then displays the calculated val-
ues on the screen.
 The images displayed on the monitor screen contain display control unit-generated RGB images.
 The display control unit controls image switching and image quality adjustments by communications with the
display.
Component DescriptionINFOID:0000000001328711
DISPLAY CONTROL UNIT
SKIB8651E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

AV-72
< SERVICE INFORMATION >
INTEGRATED DISPLAY SYSTEM
 *1: With telephone system
 *2: Without telephone system
Special Note for Trouble DiagnosisINFOID:0000000001328721
Prior to performing trouble diagnosis, make sure there are no corresponding description in the “Example of
Symptoms Possible No Malfunction”. Refer to AV-86, "
Example of Symptom Possible No Malfunction".
On Board Self-Diagnosis FunctionINFOID:0000000001328722
DESCRIPTION
 Trouble diagnosis function of navigation system has a Self Diagnosis mode by automatic operation and a
Confirmation/Adjustment mode by manual operation.
 Self Diagnosis mode checks for connections between the uni ts constituting this system, analyzes each indi-
vidual unit at the same time, and displays the results on the display.
 Confirmation/Adjustment mode displays trouble diagnos is that require an operation and a judgment by a
human (auto-decision cannot be performed by the system) , confirmation of preset value, and an error his-
tory.
DIAGNOSIS ITEM
8 (LG) Ground Communication
signal (–) Input/
Output ON —
12 (R/W) Ground Steering SW A Input ON Press and hold PTT
*1
switch Approx. 0 V
Press and hold MODE
*2
switch Approx. 0 V
Press and hold SEEK UP
switch Approx. 1.7 V
Press and hold VOL UP
switch Approx. 3.3 V
Except for above Approx. 5 V
13 (G/W) Ground Steering SW B Input ON Press and hold MODE
*1
switch Approx. 0 V
Press and hold POWER
*2
switch Approx. 0 V
Press and hold SEEK
DOWN switch Approx. 1.7 V
Press and hold VOL DOWN
switch Approx. 3.3 V
Except for above Approx. 5 V
14 (B/Y) Ground Steering SW ground — ON — Approx. 0 V Te r m i n a l
(Wire color) ItemSignal
input/
output Condition
Reference value
+– Ignition
switch Operation
SKIB7379E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

NAVIGATION SYSTEMAV-87
< SERVICE INFORMATION >
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NAVIGATION SYSTEM
System DescriptionINFOID:0000000001328739
 For Navigation System operation information, refer to Navigation System Owner's Manual.
 Each control unit that comprises the system is connect ed with a communication circuit. It transmits/receives
data signals including request signals and respons e signals, and controls the system.
 The display control unit transmits/receives data signals to/from each control unit with CAN communication. It
performs an arithmetical operation on fuel information values by using data obtained from the control units,
and then displays the calculated values on the screen.
 The display control unit receives door switch signal s from the BCM with CAN communication, and displays a
warning on the screen when driving over the set speed with a door half-shut.
 The display control unit receives vehicle speed signal s that are transmitted from the unified meter and A/C
amp., performs an arithmetical operation on drive info rmation values, and then displays the calculated val-
ues on the screen.
 The images displayed on the monitor screen c ontain NAVI control unit-generated RGB images.
 The display control unit controls image switching and image quality adjustments by communications with the
display.
NAVIGATION SYSTEM
Location Detection Principle
SKIB8652E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

NAVIGATION SYSTEMAV-113
< SERVICE INFORMATION >
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Terminal and Reference Va lue for A/C and AV SwitchINFOID:0000000001328750
Special Note for Trouble DiagnosisINFOID:0000000001328751
Prior to performing trouble diagnosis, make sure there are no corresponding description in the “Example of
Symptoms Possible No Malfunction”. Refer to AV-138, "
Example of Symptom Possible No Malfunction".
On Board Self-Diagnosis FunctionINFOID:0000000001328752
DESCRIPTION
 Trouble diagnosis function of navigation system has a Self Diagnosis mode by automatic operation and a
Confirmation/Adjustment mode by manual operation.
 Self Diagnosis mode checks for connec tions between the units constituting this system, analyzes each indi-
vidual unit at the same time, and displays the results on the display.
 Confirmation/Adjustment mode displays trouble diagnos is that require an operation and a judgment by a
human (auto-decision cannot be performed by the system), confirmation of preset value, and an error his-
tory.
DIAGNOSIS ITEM
22 (LG) Ground Communication signal
(DSP-DCU) Output ON —
23 — Shield — — — — Te r m i n a l
(Wire color) ItemSignal
input/
output Condition
Reference value
+– Ignition
switch Operation
SKIB3606E
Te r m i n a l
(Wire color) ItemSignal
input/
output Condition
Reference value
+– Ignition
switch Operation
1 (W/L) Ground Battery power su pply Input OFF — Battery voltage
2 (LG) Ground ACC power supply Input ACC — Battery voltage 5 (B) Ground Ground — ON — Approx. 0 V
6 (PU) Ground Communication
signal (+) Input/
Output ON —
7—Shield —— — —
8 (LG) Ground Communication
signal (–) Input/
Output ON —
SKIB7378E
SKIB7379E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

AV-140
< SERVICE INFORMATION >
NAVIGATION SYSTEM
DVD-ROM
ROUTE CALCULATION AND VISUAL GUIDANCE
VOICE GUIDANCE
Symptom Possible cause Possible solution
The message “Error” appears. The DVD-ROM is dirty or partially damaged. Check the DVD-ROM and wipe it clean with a
soft cloth.
If any damage, replace the DVD-ROM.
Symptom Possible cause Possible solution
In the auto re-route calculation,
waypoints are not included. Waypoints that you have already passed are not
included in the auto re-route calculation. To go to that waypoint again, it is necessary to
edit the route.
Route information is not displayed. Route calculation has not yet been performed.
Set the destination and perform route calcula-
tion.
Vehicle is not driving on the suggested route. Drive on the suggested route.
Route guidance is set to off. Turn on the route guidance.
The auto re-route calculation (or
detour calculation) suggests the
same route as the one previously
suggested. Route calculations took priority conditions into
consideration, but the same route was calculat-
ed.
This is not a malfunction.
A waypoint cannot be added. Five waypoints are already set on the route, in-
cluding the ones that you have already passed. A maximum of 5 waypoints can be set on the
route. If you want to go to 6 or more waypoints,
perform route calculations several times, as
necessary.
The suggested route is not dis-
played. Roads near the destination cannot be calculat-
ed.
Reset the destination to a main or ordinary
road, and recalculate the route.
The starting point and destination are too close. Set a more distant destination.
The starting point and destination are too far
away. Divide your trip by selecting one or two interme-
diate destinations, and perform a global route
calculation based on multiple route calcula-
tions.
There are time restricted roads (day of week,
time) near the current vehicle location or desti-
nation. Set [Use Time Restricted Roads] to off.
The part of the route already
passed is deleted. A route is managed by sections between way-
points. If passing the first waypoint, the section
between the starting point and the waypoint is
deleted. (It may not be deleted depending on the
area.)
This is not a malfunction.
An indirect route is suggested. If there are restrictions (such as one-way
streets) on roads close to the starting point or
destination, the system may suggest an indirect
route.
Adjust the location of the starting point or desti-
nation.
The system may suggest an indirect route be-
cause route calculation does not take into con-
sideration some areas such as narrow streets
(grey roads). Reset the destination to a main or ordinary
road, and recalculate the route.
The landmark information does not
correspond to the actual informa-
tion. This may be caused by insufficient or incorrect
data on the DVD-ROM.
Updated information will be included in the next
version of the DVD-ROM.
The suggested route does not ex-
actly connect with the starting
point, waypoints, or destination. There is no data for route calculation closer to
these locations. Set the starting point, waypoints and destina-
tion on a main road, and perform route calcula-
tion.
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

NAVIGATION SYSTEMAV-141
< SERVICE INFORMATION >
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Removal and Installation of NAVI Control UnitINFOID:0000000001328771
REMOVAL
1. Remove passenger side seat. Refer to SE-89, "Removal and Installation".
2. Remove clips (4), and remove NAVI control unit cover.
3. Remove screws (2) and nut (1) with power tool, and remove NAVI control unit.
4. Remove screws (4) with power tool and remove brackets.
INSTALLATION
Installation is the reverse order of removal.
Symptom Possible cause Possible solution
Voice guidance is not available. Voice guidance is only available at certain inter-
sections marked with . In some cases, voice
guidance is not available even when the vehicle
should make a turn.
This is not malfunction.
The vehicle has deviated from the suggested
route. Go back to the suggested route or request
route calculation again.
Voice guidance is set to off. Turn on the voice guidance.
Route guidance is set to off. Turn on the route guidance.
The guidance content does not
correspond to the actual condition. The content of voice guidance may vary, de-
pending on the types of intersections where
turns are made.
Follow all traffic rules and regulations.
PKIA3129E
SKIA5822E
SKIA5823E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C