2006 INFINITI FX35 warning

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DRIVER INFORMATION SYSTEM
K ELECTRICAL
CONTENTS
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Revision: 2006 December 2006 FX35/FX45
DRIVER INFORMATION SYSTEM
PRECAUTION ....................................................... ..... 4
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 4
COMBINATION METERS ...................................... ..... 5
System Description ............................................. ..... 5
UNIFIED METER CONTROL UNIT ................. ..... 5
UNIFIED METER AND A/C AMP. .................... ..... 5
POWER SUPPLY AND GROUND CIRCUIT ... ..... 5
SPEEDOMETER .............................................. ..... 6
TACHOMETER ................................................ ..... 6
WATER TEMPERATURE GAUGE ................... ..... 6
FUEL GAUGE .................................................. ..... 7
ODO/TRIP METER .......................................... ..... 7
COMBINATION METER ILLUMINATION CON-
TROL ................................................................ ..... 8
FAIL-SAFE ....................................................... ..... 8
Component Parts and Harness Connector Location ..... 9
Arrangement of Combination Meter .................... ... 10
Circuit Diagram ................................................... .... 11
Wiring Diagram — METER — ............................. ... 12
Terminals and Reference Value for Combination
Meter ................................................................... ... 14
Terminals and Reference Value for Unified Meter
and A/C Amp. ...................................................... ... 15
Self-Diagnosis Mode of Combination Meter ........ ... 15
SELF-DIAGNOSIS FUNCTION ....................... ... 15
OPERATION PROCEDURE ............................ ... 15
CONSULT-II Function (METER A/C AMP) .......... ... 16
Trouble Diagnosis ............................................... ... 16
HOW TO PERFORM TROUBLE DIAGNOSIS ... 16
PRELIMINARY CHECK ................................... ... 17
Symptom Chart ................................................... ... 17
Power Supply and Ground Circuit Inspection ..... ... 18
Vehicle Speed Signal Inspection ......................... ... 19
Engine Speed Signal Inspection ......................... ... 20
Engine Coolant Temperature Signal Inspection .. ... 21
Fuel Level Sensor Signal Inspection ................... ... 21
Fuel Gauge Pointer Fluctuates, Indicator Wrong
Value or Varies .................................................... ... 23 Fuel Gauge Does Not Move to FULL Position ....
... 23
Odo/Trip Meter and Illumination Control Switch
Inspection ............................................................ ... 24
Electrical Components Inspection ....................... ... 24
ODO/TRIP METER AND ILLUMINATION CON-
TROL SWITCH ................................................. ... 24
FUEL LEVEL SENSOR UNIT .......................... ... 24
Removal and Installation of Combination Meter .. ... 25
Disassembly and Assembly of Combination Meter ... 25
DISASSEMBLY ................................................ ... 26
ASSEMBLY ...................................................... ... 27
Removal and Installation of Odo/Trip Meter and Illu-
mination Control Switch ....................................... ... 27
REMOVAL ........................................................ ... 27
INSTALLATION ................................................ ... 27
UNIFIED METER AND A/C AMP ........................... ... 28
System Description .............................................. ... 28
COMBINATION METER CONTROL FUNCTION ... 28
A/C AUTO AMP. FUNCTION ............................ ... 29
OTHER FUNCTIONS ....................................... ... 29
Schematic ............................................................ ... 30
CONSULT-II Function (METER A/C AMP) .......... ... 31
CONSULT-II BASIC OPERATION .................... ... 31
SELF-DIAG RESULTS ..................................... ... 31
DATA MONITOR .............................................. ... 32
Power Supply and Ground Circuit Inspection ...... ... 33
DTC [U1000] CAN Communication Circuit .......... ... 34
DTC [B2202] Meter Communication Circuit ........ ... 34
DTC [B2205] Vehicle Speed Circuit ..................... ... 37
Removal and Installation of Unified Meter and A/C
Amp. .................................................................... ... 37
REMOVAL ........................................................ ... 37
INSTALLATION ................................................ ... 37
WARNING LAMPS ................................................. ... 38
System Description .............................................. ... 38
OIL PRESSURE WARNING LAMP .................. ... 38
Schematic ............................................................ ... 39
Wiring Diagram — WARN — ............................... ... 40
Oil Pressure Warning Lamp Stays Off (Ignition
Switch ON) .......................................................... ... 48

DI-2Revision: 2006 December 2006 FX35/FX45 Oil Pressure Warning Lamp Does Not Turn Off (Oil
Pressure Is Normal) ............................................. ... 49
Component Inspection ......................................... ... 51
OIL PRESSURE SWITCH ................................ ... 51
A/T INDICATOR ..................................................... ... 52
System Description .............................................. ... 52
MANUAL MODE ............................................... ... 52
NOT MANUAL MODE ...................................... ... 52
Wiring Diagram — AT/IND — .............................. ... 53
A/T Indicator Is Malfunction ................................. ... 55
WARNING CHIME .................................................. ... 56
System Description .............................................. ... 56
POWER SUPPLY AND CIRCUIT ..................... ... 56
IGNITION KEY WARNING CHIME (WITHOUT
INTELLIGENT KEY) ......................................... ... 57
IGNITION KEY WARNING CHIME (WITH INTEL-
LIGENT KEY) ................................................... ... 57
LIGHT WARNING CHIME ................................ ... 58
SEAT BELT WARNING CHIME ........................ ... 58
Component Parts and Harness Connector Location ... 59
Schematic ............................................................ ... 60
Wiring Diagram — CHIME — .............................. ... 61
Terminals and Reference Value for BCM ............. ... 64
Terminals and Reference Value for Unified Meter
and A/C Amp. ...................................................... ... 68
Terminals and Reference Value for Combination
Meter ................................................................... ... 69
CONSULT-II Function (METER A/C AMP) .......... ... 69
CONSULT-II Function (BCM) ............................... ... 69
DIAGNOSIS ITEMS DESCRIPTION ................ ... 69
CONSULT-II BASIC OPERATION .................... ... 69
DATA MONITOR ............................................... ... 69
ACTIVE TEST .................................................. ... 70
SELF-DIAG RESULTS ..................................... ... 70
Trouble Diagnosis ................................................ ... 70
HOW TO PERFORM TROUBLE DIAGNOSIS . ... 70
PRELIMINARY INSPECTION .......................... ... 71
Symptom Chart .................................................... ... 71
Power Supply and Ground Circuit Inspection ...... ... 71
Combination Meter Buzzer Circuit Inspection ...... ... 72
Front Door Switch (Driver Side) Signal Inspection ... 74
Key Switch Signal Inspection (Without Intelligent
Key) ..................................................................... ... 75
Key Switch and Ignition Knob Switch Signal Inspec-
tion (With Intelligent Key, When Mechanical Key Is
Used) ................................................................... ... 76
Lighting Switch Signal Inspection ........................ ... 77
Seat Belt Buckle Switch (Driver Side) Signal Inspec-
tion ....................................................................... ... 78
Component Inspection ......................................... ... 79
FRONT DOOR SWITCH (DRIVER SIDE) ........ ... 79
KEY SWITCH ................................................... ... 79
KEY SWITCH AND IGNITION KNOB SWITCH ... 79
SEAT BELT BUCKLE SWITCH (DRIVER SIDE) ... 79
LANE DEPARTURE WARNING SYSTEM ............. ... 80
Precautions for Lane Departure Warning (LDW)
system ................................................................. ... 80
System Description .............................................. ... 80 LDW SYSTEM OPERATION ............................
... 80
POWER SUPPLY AND GROUND CIRCUIT .... ... 82
Action Test ........................................................... ... 83
LDW SYSTEM RUNNING TEST ...................... ... 83
Camera Aiming Adjustment ................................. ... 83
OUTLINE .......................................................... ... 83
PREPARATION ................................................. ... 83
TARGET SETTING ........................................... ... 83
VEHICLE HEIGHT CHECK .............................. ... 86
AIMING ADJUSTMENT .................................... ... 86
Component Parts and Harness Connector Location ... 90
Schematic ............................................................ ... 91
Wiring Diagram — LDW — .................................. ... 92
Terminals and Reference Value for LDW Camera
Unit ....................................................................... ... 95
CONSULT-II Function (LDW) ............................... ... 95
DESCRIPTION ................................................. ... 95
CONSULT-II BASIC OPERATION .................... ... 95
WORK SUPPORT ............................................ ... 95
SELF-DIAG RESULTS ...................................... ... 95
DATA MONITOR ............................................... ... 96
ACTIVE TEST ................................................... ... 97
Trouble Diagnosis ................................................ ... 98
HOW TO PERFORM TROUBLE DIAGNOSIS . ... 98
SYMPTOM CHART ........................................... ... 98
Preliminary Inspection .......................................... ... 98
Power Supply and Ground Circuit Inspection ...... ... 99
DTC [C1B00] CAMERA UNIT MALF ................... .100
DTC [C1B01] CAM AIMING INCMP .................... .100
DTC [C1B02] VHCL SPD DATA MALF ................ .100
DTC [C1B03] ABNRML TEMP DETECT ............. .101
DTC [U1000] CAN COMM CIRCUIT ................... .101
DTC [U1010] CONTROL UNIT (CAN) ................. .101
LDW Chime Circuit Inspection ............................. .101
LDW Switch Circuit Inspection ............................. .102
LDW Indicator Lamp Circuit Inspection ................ .105
Turn Signal Input Inspection ................................ .106
Electrical Component Inspection ......................... .106
LDW SWITCH ................................................... .106
Removal and Installation for LDW Camera Unit .. .107
REMOVAL ......................................................... .107
INSTALLATION ................................................. .107
Removal and Installation for LDW Chime ............ .107
REMOVAL ......................................................... .107
INSTALLATION ................................................. .107
Removal and Installation for LDW Switch ............ .107
CAN COMMUNICATION ........................................ .108
System Description .............................................. .108
CAN Communication Unit .................................... .108
COMPASS .............................................................. .109
Precautions for Compass ..................................... .109
System Description .............................................. .109
Troubleshooting ................................................... .110
Zone Variation Setting Procedure ........................ . 111
Calibration Procedure .......................................... . 111
Wiring Diagram — COMPAS — ........................... .112
Removal and Installation of Compass .................. .113
CLOCK ................................................................... .114

DI-4
PRECAUTION
Revision: 2006 December 2006 FX35/FX45
PRECAUTION PFP:00011
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NKS002ZB
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.

COMBINATION METERS DI-5
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COMBINATION METERSPFP:24814
System DescriptionNKS002ZC
UNIFIED METER CONTROL UNIT

Speedometer, odo/trip meter, tachometer, fuel gauge and water temperature gauge are controlled by the
unified meter control unit, which is built into the combination meter. Unified meter control unit receives sig-
nals from unified meter and A/C amp.

Warning lamp and indicator lamp of combination meter are controlled by signals drawn from the unified
meter and A/C amp.

Odo/trip meter, shift position indicator and ICC system display segments can be checked in self-diagnosis
mode.

Meters/gauges can be checked in self-diagnosis mode.
UNIFIED METER AND A/C AMP.
Refer to DI-28, "COMBINATION METER CONTROL FUNCTION" in “UNIFIED METER AND A/C AMP”.
POWER SUPPLY AND GROUND CIRCUIT
Power is supplied at all times

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

to combination meter terminal 8, and

to unified meter and A/C amp. terminal 21.
With the ignition switch in the ON or START position, power is supplied

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

to combination meter terminal 7,

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

to unified meter and A/C amp. terminal 22.
With the ignition switch in the ACC or ON position, power is supplied

through 10A fuse [No. 6, located in the fuse block (J/B)]

to combination meter terminal 4,

through 15A fuse [No. 10, located in the fuse block (J/B)], and

through 15A fuse [No. 11, located in the fuse block (J/B)]

to unified meter and A/C amp. terminal 46.
Ground is supplied

to combination meter terminals 5, 6 and 15

through grounds M35, M45 and M85,

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

through grounds M35, M45 and M85.

DI-8
COMBINATION METERS
Revision: 2006 December 2006 FX35/FX45
COMBINATION METER ILLUMINATION CONTROL
Daytime Mode
When ignition switch is turned ON, combination meter illumination is turned ON by unified meter control unit.
Nighttime Mode

Unified meter control unit is transferred to nighttime mode, with ignition switch turned ON and position
light request signal from BCM with CAN communication.

When nighttime mode, illumination control switch illumination
turns ON by unified meter control unit. Each illumination is con-
trolled by unified meter control unit.

Each illumination can be adjusted to 16 step by illumination con-
trol switch in nighttime mode.
NOTE:
For further details of illumination circuit, refer to LT- 1 8 9 , "
ILLUMINA-
TION" .
FAIL-SAF E
Combination meter performs fail-safe operation when unified meter and A/C amp. communication is malfunc-
tioning.
SKIA4795E
Function Fail-safe operation
Speedometer
Return to zero.
Tachometer
Fuel gauge
Water temperature gauge
Illumination control Combination meter illumination Change to nighttime mode.
Odo/trip meter Integrate in response to 8-pulse input.
A/T position indicator The display turns OFF.
Warning buzzer The warning buzzer turns OFF.
Warning lamp/indicator lamp ABS warning lamp
The lamp turns ON.
VDC OFF indicator
SLIP indicator
Brake warning lamp
Low tire pressure warning lamp
AWD warning lamp
Door warning lamp
The lamp turns OFF.
SET indicator lamp
CRUISE indicator lamp
ICC warning lamp
A/T CHECK warning lamp
Oil pressure warning lamp
Snow mode indicator lamp
Turn signal indicator
Malfunction indicator lamp
High beam indicator
Key warning lamp

DI-16
COMBINATION METERS
Revision: 2006 December 2006 FX35/FX45
3. Turn ignition switch ON while pressing trip transfer switch and trip reset switch at the same time.
4. After ignition switch is turned ON, release trip transfer switch and trip reset switch (within 7 seconds after the ignition switch is
turned ON).
5. All the segments on the odo/trip meter, shift position indicator and ICC system display illuminates, and simultaneously the low-fuel warning lamp indicator illuminates. At this time, the unified meter control unit
is turned to self-diagnosis mode.
NOTE:

Check odo/trip meter switch and combination meter power supply and ground circuit when self-diagno-
sis mode of combination meter does not start. Replace combination meter if the results of the check are
normal.

If any of the segments are not displayed, replace combination meter.
6. Each meter/gauge activates during pressing trip reset switch. (Then low-fuel warning lamp turns OFF.)
NOTE:

If any of the meters/gauges are not activated, replace the
combination meter.

The figure is reference.
CONSULT-II Function (METER A/C AMP)NKS002ZK
Refer to DI-31, "CONSULT-II Function (METER A/C AMP)" in “UNIFIED METER AND A/C AMP”.
Trouble DiagnosisNKS002ZL
HOW TO PERFORM TROUBLE DIAGNOSIS
1. Confirm the symptom or customer complaint.
2. Perform preliminary check. Refer to DI-17, "
PRELIMINARY CHECK" .
3. According to the symptom chart, repair or replace the cause of the symptom. Refer to DI-17, "
Symptom
Chart" .
4. Does the meter operate normally? If so, GO TO 5. If not, GO TO 2.
5. INSPECTION END
SKIA4817E
SKIA6170E
SKIA4831E

COMBINATION METERS DI-17
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PRELIMINARY CHECK
1. CHECK OPERATION OF SELF-DIAGNOSIS MODE (COMBINATION METER)
Perform self-diagnosis mode of combination meter. Refer to DI-15, "
OPERATION PROCEDURE" .
Does self-diagnosis function operate?
YES >> GO TO 2.
NO >> GO TO 3.
2. CHECK UNIFIED METER AND A/C AMP. (CONSULT-II)
Perform self-diagnosis of unified meter and A/C amp. Refer to DI-31, "
CONSULT-II Function (METER A/C
AMP)" .
Self-diagnosis results
No malfunction detected >> INSPECTION END
Malfunction detected >> Check applicable parts, and repair or replace corresponding parts.
3. CHECK POWER SUPPLY AND GROUND CIRCUIT OF COMBINATION METER
Check power supply and ground circuit of combination meter. Refer to DI-18, "
Power Supply and Ground Cir-
cuit Inspection" .
OK or NG
OK >> Check odo/trip meter switch. Refer to DI-24, "Odo/Trip Meter and Illumination Control Switch
Inspection" .
NG >> Repair malfunctioning part.
Symptom Chart NKS002ZM
Symptom Possible cause
Speedometer and odo/trip meter indication is malfunctioning. Refer to DI-19, "
Vehicle Speed Signal Inspection" .
Tachometer indication is malfunctioning. Refer to DI-20, "
Engine Speed Signal Inspection" .
Water temperature gauge indication is malfunctioning. Refer to DI-21, "
Engine Coolant Temperature Signal Inspection" .
Fuel gauge indication is malfunctioning. Refer to DI-21, "
Fuel Level Sensor Signal Inspection" .
Low-fuel warning lamp indication is irregular.
Shift position indicator is malfunctioning. Refer to DI-55, "
A/T Indicator Is Malfunction" .
Illumination control does not operate. Refer to
DI-24, "
Odo/Trip Meter and Illumination Control Switch
Inspection" .

COMBINATION METERS DI-21
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Engine Coolant Temperature Signal InspectionNKS002ZR
Symptom: Water temperature gauge indication is malfunction.
1. CHECK COMBINATION METER INPUT SIGNAL
1. Connect CONSULT-II, and start engine.
2. Select “METER A/C AMP” on CONSULT-II.
3. Using “W TEMP METER” on “DATA MONITOR”, compare the value of “DATA MONITOR” with water temperature gauge
pointer of combination meter.
OK or NG
OK >> GO TO 2.
NG >> Replace combination meter.
2. CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
1. Select “ENGINE” on CONSULT-II.
2. Using “COOLAN TEMP/S” on “DATA MONITOR”, print out the CONSULT-II screen.
3. Select “METER A/C AMP” on CONSULT-II.
4. Using “W TEMP METER” on “DATA MONITOR”, compare the value of “DATA MONITOR” with that of the “COOLAN TEMP/S”.
OK or NG
OK >> Perform ECM self-diagnosis. Refer to EC-119, "CON-
SULT-II Function (ENGINE)" (VQ35DE) or EC-780,
"CONSULT-II Function (ENGINE)" (VK45DE).
NG >> Replace unified meter and A/C amp. Refer to DI-37,
"Removal and Installation of Unified Meter and A/C
Amp." .
Fuel Level Sensor Signal InspectionNKS002ZS
Symptom:

Fuel gauge indication is malfunctioning.

Low-fuel warning lamp indication is irregular.
NOTE:
The following symptoms are not malfunctions.
Fuel gauge

Depending on vehicle posture or driving circumstance, the fuel level in the tank varies, and the pointer
may fluctuate.

If the vehicle is fueled with the ignition switch ON, the pointer will move slowly.
Low-fuel warning lamp

Depending on vehicle posture or driving circumstance, the fuel in the tank flows and the warning lamp ON
timing may change.
Water temperature gauge pointer Reference value of data monitor [ °C ( °F)]
Hot Approx. 130 (266)
Middle Approx. 70 - 105 (158 - 221) Cold Approx. 50 (122)
PKIA2091E
SKIA4368E