Ac system INFINITI FX35 2006 Service Manual

DI-28
UNIFIED METER AND A/C AMP
Revision: 2006 December 2006 FX35/FX45
UNIFIED METER AND A/C AMPPFP:27760
System DescriptionNKS00300

For the unified meter and A/C amp., the signal required for controlling the combination meter are inte-
grated in the A/C auto amp.

The unified meter and A/C amp. corresponds to a CONSULT-II function (self-diagnosis results, CAN diag-
nosis support monitor, data monitor).
COMBINATION METER CONTROL FUNCTION

Unified meter and A/C amp. receives necessary information for combination meter from each unit by CAN
communication.

Unified meter and A/C amp. transmits a signals with communication line (TX, RX) between unified meter
and A/C amp. and combination meter.
Input/output signals between unified meter and A/C amp. and combination meter.
NOTE:
Combination meter performs fail-safe operation when unified meter and A/C amp. communication is malfunctioning. Refer to DI-8,
"FAIL-SAFE" . Unit Input Output
Unified meter and A/C amp.

Seat belt buckle switch signal (Driver's side)

Parking brake signal

Illumination control nighttime required signal

Refuel status signal

Low-fuel warning lamp condition signal

Combination meter receive error signal

Delivery destination data signal

Combination meter specifications signal

Vehicle speed signal (8-pulse)

Engine speed signal

Engine coolant temperature signal

Fuel level sensor signal (resistance value)

Malfunction indicator lamp signal

ABS warning lamp signal

Low tire pressure warning lamp signal

Brake warning lamp signal

A/T CHECK warning lamp signal

ICC warning lamp signal

Oil pressure switch signal

Door switch signal

AWD warning lamp signal

Key warning lamp signal

VDC OFF indicator lamp signal

SLIP indicator lamp signal

CRUISE indicator lamp signal

SET indicator lamp signal

High beam request signal

Turn indicator signal

Snow mode switch signal

ICC system display signal

Shift position indicator signal

Manual mode indicator signal

Manual mode gear position signal

CAN communication condition signal of A/T

Position lights request signal

Buzzer output signal

UNIFIED METER AND A/C AMP DI-31
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Revision: 2006 December 2006 FX35/FX45
CONSULT-II Function (METER A/C AMP)NKS00304
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II BASIC OPERATION
Refer to GI-38, "CONSULT-II Start Procedure" .
SELF-DIAG RESULTS
Operation Procedure
1. Touch “SELF-DIAG RESULTS” on “SELECT DIAG MODE” screen.
2. Self-diagnosis results are displayed.
Display Item List
NOTE:
“TIME” means the following.

0: Means detected malfunction at present. (From malfunction detection to turning ignition switch OFF)

1 - 63: Means detected malfunction in the past. (Displays the number of ignition switch OFF → ON after
detecting malfunction. “SELF-DIAG RESULTS” is erased when exceeding “63”.)
System Diagnosis mode Description Reference
page
METER A/C AMP SELF-DIAG RESULTS
Unified meter and A/C amp. checks the conditions and dis-
plays memorized error. DI-31
CAN DIAG SUPPORT MNTR The results of transmit/receive diagnosis of CAN communi-
cation can be read. LAN-16
DATA MONITOR
Displays unified meter and A/C amp. input data in real
time. DI-32
SKIA4956E
Display item [Code] Malfunction is detected when...
Reference
page
CAN COMM CIRC [U1000] Malfunction is detected in CAN communication.
CAUTION:
Even when there is no malfunction on CAN communication system, malfunction
may be misinterpreted when battery has low voltage (when maintaining 7 - 8 V
for about 2 seconds) or 10A fuse [No. 19, located in the fuse block (J/B)] is dis-
connected. DI-34
METER COMM CIRC [B2202]
Malfunction is detected in communication of between combination meter and unified
meter and A/C amp. DI-34
VEHICLE SPEED CIRC [B2205] When an erroneous speed signal is input for 1 second.
CAUTION:
Even when there is no malfunction on speed signal system, malfunction may be
misinterpreted when battery has low voltage (when maintaining 7 - 8 V for about
2 seconds). DI-37

DI-34
UNIFIED METER AND A/C AMP
Revision: 2006 December 2006 FX35/FX45
2. CHECK POWER SUPPLY CIRCUIT
Check voltage between unified meter and A/C amp. harness con-
nector terminals and ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness between unified meter and A/C amp. and fuse.
3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect unified meter and A/C amp. connector.
3. Check continuity between unified meter and A/C amp. harness connector M56 terminals 29, 30 and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
DTC [U1000] CAN Communication CircuitNKS00305
Symptom: Display “CAN COMM CIRC [U1000]” at the result of self-diagnosis for unified meter and A/C amp.
1. CHECK CAN COMMUNICATION
1. Select “SELF-DIAG RESULTS” mode for “METER A/C AMP” with CONSULT-II.
2. Print out CONSULT-II screen.
>> Go to “LAN system”. Refer to LAN-3, "
Precautions When Using CONSULT-II" .
DTC [B2202] Meter Communication CircuitNKS00306
Symptom: Display “METER COMM CIRC [B2202]” at the result of self-diagnosis for unified meter and A/C
amp.
1. CHECK CONNECTOR
Check combination meter, unified meter and A/C amp. and terminals (combination meter side, unified meter
and A/C amp. side, and harness side) for looseness or bent terminals.
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
Terminals Ignition switch position
(+) (–) OFF ACC ON
Connector Terminal
M56 21
Ground Battery
voltage Battery
voltage Battery
voltage
22 0 V 0 V Battery
voltage
M57 46 0 V Battery
voltage Battery
voltage
PKIB3570E
29 – Ground : Continuity should exist.
30 – Ground
SKIA5202E

DI-38
WARNING LAMPS
Revision: 2006 December 2006 FX35/FX45
WARNING LAMPSPFP:24814
System DescriptionNKS003HX
OIL PRESSURE WARNING LAMP
Oil pressure warning lamp turns ON when reducing engine oil pressure abnormally.

IPDM E/R reads oil pressure switch signal from oil pressure switch, and transmits the signal to unified
meter and A/C amp. through BCM with CAN communication.

Unified meter and A/C amp. transmits oil pressure switch signal to combination meter with communication
line.

Combination meter turns oil pressure warning lamp ON with received oil pressure switch signal.
PKIB7655E

DI-52
A/T INDICATOR
Revision: 2006 December 2006 FX35/FX45
A/T INDICATORPFP:24814
System DescriptionNKS003HY
A/T shift position is displayed in the segment display in the combination meter.
MANUAL MODE

Unified meter and A/C amp. reads manual mode signal and shift-up/down signal from A/T device (manual
mode switch), and transmits the signals to TCM with CAN communication.

TCM processes manual mode signal and shift-up/down signal, and transmits manual mode indicator sig-
nal and shift position indicator signal to unified meter and A/C amp. with CAN communication.

Unified meter and A/C amp. transmits manual mode indicator signal and shift position indicator signal to
combination meter with the communication line.

Combination meter indicates shift gear position and manual mode indicator, when receiving manual mode
indicator signal and shift position indicator signal.
NOT MANUAL MODE

Unified meter and A/C amp. reads not manual mode signal from A/T device (manual mode switch), and
transmits the signals to TCM with CAN communication.

TCM transmits shift position indicator signal to unified meter and A/C amp. with CAN communication.

Unified meter and A/C amp. transmits shift position indicator signal to combination meter with the commu-
nication line.

Combination meter indicates A/T shift position when receiving shift position indicator signal.
SKIB8484E

DI-56
WARNING CHIME
Revision: 2006 December 2006 FX35/FX45
WARNING CHIMEPFP:24814
System DescriptionNKS0030J

Buzzer for warning chime system is installed in the combination meter.

The buzzer sounds when the combination meter receives buzzer output signal from each unit through uni-
fied meter and A/C amp.
POWER SUPPLY AND CIRCUIT
Power is supplied at all times

through 50A fusible link (letter M , located in the fuse and fusible link block)

to BCM terminal 55,

through 15A fuse [No. 22, located in the fuse block (J/B)]

to key switch and ignition knob switch terminal 3 (with Intelligent Key)

to key switch terminal 2 (without Intelligent Key), and

to BCM terminal 42,

through 10A fuse [No. 38, located in the fuse and fusible link block (with Intelligent Key)]

to key switch and ignition knob switch terminal 1,

through 10A fuse [No. 19, located in the fuse block (J/B)]

to unified meter and A/C amp. terminal 21, and

to combination meter terminal 8.
When ignition switch is in ON or START position, power is supplied

through 15A fuse [No. 1, located in the fuse block (J/B)]

to BCM terminal 38,

through 10A fuse [No. 12, located in the fuse block (J/B)]

to unified meter and A/C amp. terminal 22,

through 10A fuse [No. 14, located in the fuse block (J/B)]

to combination meter terminal 7.
Ground is supplied

to BCM terminals 49 and 52,

to unified meter and A/C amp. terminals 29 and 30, and

to combination meter terminals 5, 6 and 15

through grounds M35, M45 and M85.

DI-64
WARNING CHIME
Revision: 2006 December 2006 FX35/FX45
Terminals and Reference Value for BCMNKS0030P
CAUTION:

Check combination switch system terminal waveform under the loaded condition with lighting
switch, turn signal and wiper switch OFF not to be fluctuated by overloaded.

Turn wiper dial position to 4 except when checking waveform or voltage of wiper dial position.
Wiper dial position can be confirmed on CONSULT-II. Refer to LT- 11 9 , "
DATA MONITOR" .
Te r -
mina
l No. Wire
color Item Measuring condition
Reference value
Ignition
switch Operation or condition
2G/Y Combination
switch input 5 ON Lighting,
turn,
wiper
switch
(Wiper
intermit-
tent dial
position
4) OFF Approx. 0 V
Any of the conditions below

Lighting switch 1ST

Lighting switch HIGH beam
(Operates only HIGH beam
switch)

Turn signal switch to right
Approx. 1.0 V
Lighting switch 2ND Approx. 2.0 V
3L/B Combination
switch input 4 ON Lighting,
turn,
wiper
switch
(Wiper
intermit-
tent dial
position
4) OFF Approx. 0 V
Front fog lamp switch (Operates only
front fog lamp switch)
Approx. 0.8 V
Any of the conditions below

Lighting switch 2ND

Lighting switch PASSING
(Operates only PASSING switch)

Turn signal switch to left
Approx. 1.0 V
4PU/W Combination
switch input 3 ON Lighting,
turn,
wiper
switch
(Wiper
intermit-
tent dial
position
4) OFF Approx. 0 V
Any of the conditions below

Lighting switch AUTO

Front wiper switch MIST

Front wiper switch INT

Front wiper switch LO Approx. 1.0 V
PKIB4959J
PKIB4953J
PKIB4955J
PKIB4959J
PKIB4959J

WARNING CHIME DI-69
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Revision: 2006 December 2006 FX35/FX45
Terminals and Reference Value for Combination MeterNKS0030R
CONSULT-II Function (METER A/C AMP)NKS003HZ
Refer to DI-31, "CONSULT-II Function (METER A/C AMP)" in “UNIFIED METER AND A/C AMP”.
CONSULT-II Function (BCM)NKS003I0
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
DIAGNOSIS ITEMS DESCRIPTION
CONSULT-II BASIC OPERATION
Refer to GI-38, "CONSULT-II Start Procedure" .
DATA MONITOR
Operation Procedure
1. Touch “BUZZER” on “SELECT TEST ITEM” screen.
2. Touch “DATA MONITOR” on “SELECT DIAG MODE” screen.
3. Touch “ALL SIGNALS” or “SELECTION FROM MENU” on “DATA MONITOR” screen.
4. If “SELECTION FROM MENU” is selected, touch the desired monitor item. If “ALL SIGNALS” is selected, all items required to control are monitored.
Terminal
No. Wire
color Item Measuring condition
Reference value
Ignition
switch Operation or condition
5 B Ground ON — Approx. 0 V
6
7 G/Y Ignition power supply ON — Battery voltage
8 R/W Battery power supply OFF — Battery voltage
9LG Seat belt buckle switch
(Driver side) ON Unfastened (ON) Approx. 0 V
Fastened (OFF) Approx. 12 V
13 L/B TX communication line (To
unified meter and A/C amp.) ON —
14 PU RX communication line
(From unified meter and A/C
amp.) ON —
15 B Ground ON — Approx. 0 V
SKIA3361E
SKIA3362E
System Test item Diagnosis mode Description Reference
page
BCM BUZZER DATA MONITOR Displays BCM input data in real time.
DI-69
ACTIVE TEST Operation of electrical loads can be checked by sending driving
signal to them. DI-70
BCM SELF-DIAG RESULTS BCM checks the conditions and displays memorized error.
DI-70
ALL SIGNALS Monitors all items.
SELECTION FROM MENU Selects and monitors items.

DI-70
WARNING CHIME
Revision: 2006 December 2006 FX35/FX45
5. Touch “START”.
6. During monitoring, touching “RECORD” can start recording the monitored item status.
Display Item List
ACTIVE TEST
Operation Procedure
1. Touch “BUZZER” on “SELECT TEST ITEM” screen.
2. Touch “ACTIVE TEST” on “SELECT DIAG MODE” screen.
3. Touch the item to be tested, and check the operation.
4. During the operation check, touching “OFF” deactivates the operation.
Display Item List
SELF-DIAG RESULTS
Operation Procedure
1. Touch “BCM” on “SELECT TEST ITEM” screen.
2. Touch “SELF-DIAG RESULTS” on “SELECT DIAG MODE” screen.
3. Self-diagnosis results are displayed.
Display Item List
NOTE:
If “CAN communication [U1000]” is indicated, after printing the monitor item, go to “LAN system”. Refer to
LAN-3, "
Precautions When Using CONSULT-II" .
Trouble DiagnosisNKS003I1
HOW TO PERFORM TROUBLE DIAGNOSIS
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to DI-56, "
System Description" .
3. Perform the preliminary inspection. Refer to DI-71, "
PRELIMINARY INSPECTION" .
4. Referring to trouble diagnosis chart, make sure the cause of the malfunction and repair or replace applica- ble parts. Refer to DI-71, "
Symptom Chart" .
5. Does the warning chime operate normally? If so, GO TO 6. If not, GO TO 3.
6. INSPECTION END
Monitored item Description
IGN ON SW Indicates [ON/OFF] condition of ignition switch.
KEY ON SW Indicates [ON/OFF] condition of key switch.
DOOR SW-DR Indicates [ON/OFF] condition of front door switch (driver side).
LIGHT SW 1ST Indicates [ON/OFF] condition of lighting switch.
BUCKLE SW Indicates [ON/OFF] condition of seat belt switch (driver side).
Test item Malfunction is detected when···
LIGHT WARN ALM This test is able to check light warning chime operation.
IGN KEY WARN ALM This test is able to check ignition key warning chime operation.
SEAT BELT WARN TEST This test is able to check seat belt warning chime operation.
Monitored Item CONSULT-ll display Description
CAN communication CAN communication [U1000] Malfunction is detected in CAN communication.

DI-80
LANE DEPARTURE WARNING SYSTEM
Revision: 2006 December 2006 FX35/FX45
LANE DEPARTURE WARNING SYSTEM PFP:28442
Precautions for Lane Departure Warning (LDW) systemNKS00311
WARNING:
Lane Departure Warning (LDW) is only a warning device to inform the driver of an unintended lane
departure. It will not steer the vehicle or prevent loss of control. It is the driver's responsibility to stay
alert, drive safely, keep the vehicle in the traveling lane, and be in control of the vehicle at all times.

LDW system does not operate under the following conditions:
–At speeds below approx. 72 km/h (45 MPH).
–If it cannot detect lane markers.

LDW system may not function properly under the following conditions:
–On roads where a water puddle, dirt or snow is covering the lane markers.
–On roads where the lane markers are faded or are not painted clearly.
–On roads where the lane markers are painted yellow.

LDW system may not monitor the lane markers in certain road, weather or driving conditions.
–On roads where there are sharp curves.
–Where the traveling lane merges or separates.
–On roads where the discontinued lane markers are present, such as near tollgates, etc.
–On roads where there are not general lane markers.
–On roads where the lane width is too narrow.
–During bad weather (rain, fog, snow, etc.).
–When strong light (for example, at sunrise or sunset) is directly shining on the front of the vehicle.
–When entering or exiting a tunnel where sudden changes in brightness occur.
–When traveling close to the vehicle in front of you, which causes obstruction of the camera unit
range.
–When the vehicle's traveling direction does not align with the lane marker.
–When rain, snow or dirt adhere to the windshield in front of the camera unit.

Excessive noise interferes with warning system chime sound and the chime may not be heard.
CAUTION:
To keep the LDW system operating properly, be sure to observe the following:

Always keep the windshield clean. The sensing capability of the camera unit depends on the con-
dition of the windshield. See “Appearance and care” for cleaning instruction.

Never strike or damage the areas around the camera unit.

Never touch the camera lens.

Never attach a sticker (including transparent material) or install an accessory near the camera
unit.

Never place reflective materials, such as a white paper or mirrors on the instrument panel. Reflec-
tion of the sunlight may adversely affect the camera unit's lane marker detection capability.
System DescriptionNKS00312
LDW SYSTEM OPERATION

The Lane Departure Warning (LDW) system warns the driver when the vehicle is traveling close to either
the left or the right of the traveling lane.

The system monitors lane markers of the traveling lane using the LDW camera unit. When the LDW cam-
era unit detects that the vehicle is traveling close to either the left or the right of the traveling lane, the
LDW indicator lamp flashes and a chime sounds to alert the driver.
NOTE:
When activating turn signal, LDW system does not give a warning to the lane marker on the turn signal
side.

The LDW system can be turned on or off by pushing the LDW switch. When the system is on, the LDW
system ON indicator illuminates.

The LDW system has an automatic mode and manual mode.