2006 INFINITI FX35 heater

ENGINE COOLANT CO-39
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Revision: 2006 December 2006 FX35/FX45
REFILLING ENGINE COOLANT
1. Install reservoir tank, and radiator drain plug. CAUTION:
Be sure to clean radiator drain plug and install with new O-ring.
If water drain plugs on cylinder block are removed, close and tighten them. Refer to EM-253,
"ASSEMBLY" .
2. Make sure that each hose clamp has been firmly tightened.
3. Remove air relief plug on heater hose.
4. Fill thermostat housing and reservoir tank to specified level.

Refill engine coolant up to filler neck of thermostat housing.

Pour engine coolant through engine coolant filler neck slowly of less than 2 (2-1/8 US qt, 1-3/4
Imp qt) a minute to allow air in system to escape.

Use Genuine Nissan Long Life Antifreeze/Coolant or equivalent mixed with water (distilled or
demineralized). Refer to MA-12, "
RECOMMENDED FLUIDS AND LUBRICANTS" .

When engine coolant overflows air relief hole on heater hose,
install air relief plug.
5. Install radiator cap.
6. Warm up until opening thermostat. Standard for warming-up time is approximately 10 minutes at 3,000 rpm.

Make sure thermostat opening condition by touching radiator hose (lower) to see a flow of warm water.
CAUTION:
Watch water temperature gauge so as not to overheat engine.
7. Stop engine and cool down to less than approximately 50 °C (122 °F).

Cool down using a fan to reduce the time.

If necessary, refill engine coolant up to filler neck of thermostat housing.
8. Refill reservoir tank to “MAX” level line with engine coolant. Radiator drain plug:
: 1.19 N·m (0.12 kg-m, 11 in-lb)
PBIC1530E
Engine coolant capacity
(With reservoir tank at “MAX” level):
Approx. 10.0 (10-5/8 US qt, 8-3/4 Imp qt)
Reservoir tank engine coolant capacity
(At “MAX” level):
0.8 (7/8 US qt, 3/4 lmp qt)
SMA412B

CO-40
[VK45DE]
ENGINE COOLANT
Revision: 2006 December 2006 FX35/FX45
9. Repeat steps 4 through 7 two or more times with radiator cap installed until engine coolant level no longer drops.
10. Check cooling system for leaks with engine running.
11. Warm up engine, and check for sound of engine coolant flow while running engine from idle up to 3,000 rpm with heater temperature controller set at several position between “COOL” and “WARM”.

Sound may be noticeable at heater unit.
12. Repeat step 11 three times.
13. If sound is heard, bleed air from cooling system by repeating steps 4 through 7 until engine coolant level no longer drops.
FLUSHING COOLING SYSTEM
1. Install reservoir tank, and radiator drain plug.
CAUTION:
Be sure to clean drain plug and install with new O-ring.
If water drain plugs on cylinder block are removed, close and tighten them. Refer to EM-253,
"ASSEMBLY" .
2. Remove air relief plug on heater hose.
3. Fill thermostat housing with water until water spills from the air relief hole, then close air relief plug. Fill thermostat housing and reservoir tank with water and reinstall radiator cap.
4. Run engine and warm it up to normal operating temperature.
5. Rev engine two or three times under no-load.
6. Stop engine and wait until it cools down.
7. Drain water from the system. Refer to CO-38, "
DRAINING ENGINE COOLANT" .
8. Repeat steps 1 through 7 until clear water begins to drain from radiator. Radiator drain plug:
: 1.19 N·m (0.12 kg-m, 11 in-lb)
PBIC1530E

THERMOSTAT AND WATER CONTROL VALVE CO-53
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Revision: 2006 December 2006 FX35/FX45
THERMOSTAT AND WATER CONTROL VALVEPFP:21200
ComponentsNBS005S1
1. O-ring 2. Water outlet pipe 3. Thermostat housing
4. Radiator cap 5. Radiator hose (upper) 6. Water hose
7. Water hose 8. Water pipe 9. Water hose
10. Water hose 11. Thermostat 12. Rubber ring
13. Water inlet 14. Water suction hose 15. Water suction pipe
16. Radiator hose (lower) 17. Water hose 18. Water hose
19. O-ring 20. Heater pipe 21. Heater hose
22. Gasket 23. Water outlet 24. Water control valve
25. Rubber ring 26. O-ring 27. Water connector
28. Heater hose 29. Gasket
A. To radiator B. To oil cooler C. To cylinder block
PBIC4557E

CO-54
[VK45DE]
THERMOSTAT AND WATER CONTROL VALVE
Revision: 2006 December 2006 FX35/FX45

Refer to GI-11, "Components" for symbol marks in the figure.
Removal and InstallationNBS003KS
REMOVAL
1. Drain engine coolant from drain plugs on radiator and both side of cylinder block. Refer to CO-38, "Chang-
ing Engine Coolant" and EM-249, "DISASSEMBLY" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.
2. Remove engine cover with power tool. Refer to EM-173, "
ENGINE ROOM COVER" .
3. Remove air duct (inlet). Refer to EM-177, "
AIR CLEANER AND AIR DUCT" .
4. Disconnect water suction hose from water inlet.
5. Remove water inlet and thermostat. CAUTION:
Do not disassemble thermostat.
6. Remove intake manifolds (upper and lower). Refer to EM-179, "
INTAKE MANIFOLD" .
7. Disconnect radiator hose (upper) and water hoses from thermostat housing.
8. Disconnect heater hoses from water outlet and heater pipe.
9. Remove thermostat housing, water outlet pipe, water connector, water control valve, water outlet and heater pipe.
CAUTION:
Do not disassemble water control valve.
INSPECTION AFTER REMOVAL

Make sure that valves both in thermostat and water control valve are completely closing at normal temper-
ature.

Place a thread so that it is caught in the valves of the thermostat
and water control valve. Immerse fully in a container filled with
water. Heat while stirring. (The example in the figure shows ther-
mostat.)

The valve opening temperature is the temperature at which the
valve opens and falls from the thread.

Continue heating. Check the maximum valve lift.
NOTE:
The maximum valve lift standard temperature for water control
valve is the reference value.

After checking the maximum valve lift, lower the water tempera-
ture and check the valve closing temperature.
Standard values:

If the malfunctioning condition, when closing valve at normal temperature, or measured values are out of
the standard, replace thermostat and/or water control valve.
INSTALLATION
Note the following, and install in the reverse order of removal.
CAUTION:
Be careful not to spill engine coolant over engine room. Use rag to absorb engine coolant.
D. To heater core E. To cylinder head (left bank) F. To cylinder head (right bank)
G. To intake manifold adapter
SLC252B
Thermostat Water control valve
Valve opening temperature 80 - 84 °C (176 - 183 °F) 93.5 - 96.5 °C (200 - 206 °F)
Maximum valve lift More than 10 mm/ 95
°C
(0.39 in/ 203 °F) More than 8 mm/ 108
°C
(0.315 in/ 226 °F)
Valve closing temperature 77 °C (171 °F) 90 °C (194 °F)

THERMOSTAT AND WATER CONTROL VALVE CO-55
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Revision: 2006 December 2006 FX35/FX45
Thermostat and Water Control Valve

Install thermostat and water control valve with the whole circum-
ference of each flange part fit securely inside rubber ring. (The
example in the figure shows thermostat.)

Install thermostat with jiggle valve facing upwards. (The position
deviation may be within the range of ±10 degrees)

Install water control valve with the up-mark facing up and the
frame center part facing upwards. (The position deviation may
be within the range of ±10 degrees)
Water Outlet Pipe and Heater Pipe
First apply a neutral detergent to O-rings, then quickly insert the insertion parts of the water outlet pipe and
heater pipe into the installation holes.
INSPECTION AFTER INSTALLATION

Check for leaks of engine coolant using radiator cap tester adapter [SST: EG17650301 (J33984-A)] and
radiator cap tester (commercial service tool). Refer to CO-38, "
LEAK CHECK" .

Start and warm up engine. Visually check if there is no leaks of engine coolant.
PBIC0157E
PBIC0158E

COMPASS DI-111
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Revision: 2006 December 2006 FX35/FX45
Zone Variation Setting ProcedureNKS003HT
NOTE:
The zone setting is factory preset (“default” setting) to zone 8.
1. Press and hold the inside mirror switch for 6 – 9 seconds.
2. The current zone setting appears on the compass display.
3. Find the current geographical location number in the Zone Varia- tion Chart.
4. Select the new zone number. (Press the inside mirror switch until the new zone number appears on the compass display.)
5. After select the new zone number, the compass display will automatically shows a direction within a few seconds.
6. Preform the following Calibration Procedure for more accurate indications.
Calibration ProcedureNKS003HU
NOTE:
The compass calibrates itself under normal driving conditions. However, occasional circumstances may cause
the compass to operate inaccurately. Example: Driving from rural (wide open) areas to crowded city areas, or
if an aftermarket (i.e., non original equipment) antenna with a magnetic base is attached to the vehicle. Cali-
brate the mirror compass if the display shows only one direction or a limited number of directions.
NOTE:

If “magnetic hats” are used in the dealership for vehicle identification, remove the hat from the vehicle
before performing the following steps. Do NOT put the hat back on the vehicle after the procedure is com-
pleted.

Drive the vehicle to an open level area; away from large metallic objects, structures, and overhead power
lines.

Turn off “non-essential” electrical accessories (rear window defrost, heater/air conditioning, wipers) and
close the doors.
1. Verify the correct compass zone setting for the geographical location. Refer to D I - 111 , "
Zone Variation
Setting Procedure" .
2. Press and hold the inside mirror switch for more than 9 seconds.
3. “C” is displayed on the compass display, when calibration starts.
4. Drive slowly [less than 8 km/h (5 mph)] in a circle until the “C / CAL” is replaced with primary headings (N, NE, E, SE, S, SW, W, or NW).
NOTE:
This will require driving at least 2 complete 360 degree circles; 3 complete circles may be required.
5. The compass calibration procedure is now complete. The compass should operate normally.
NOTE:
If at any time the compass continually displays the incorrect direction or the reading is erratic or locked,
repeat the calibration procedure.
SEL168Y

EC-2Revision: 2006 December 2006 FX35/FX45
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT ...................................................................... .148
Description ........................................................... .148
Diagnostic Procedure .......................................... .148
POWER SUPPLY AND GROUND CIRCUIT .......... .149
Wiring Diagram .................................................... .149
Diagnostic Procedure .......................................... .150
Ground Inspection ............................................... .154
DTC U1000, U1001 CAN COMMUNICATION LINE .156
Description ........................................................... .156
On Board Diagnosis Logic ................................... .156
DTC Confirmation Procedure .............................. .156
Wiring Diagram .................................................... .157
Diagnostic Procedure .......................................... .158
DTC U1010 CAN COMMUNICATION .................... .159
Description ........................................................... .159
On Board Diagnosis Logic ................................... .159
DTC Confirmation Procedure .............................. .159
Diagnostic Procedure .......................................... .160
DTC P0011, P0021 IVT CONTROL ....................... .161
Description ........................................................... .161
CONSULT-II Reference Value in Data Monitor Mode .161
On Board Diagnosis Logic ................................... .162
DTC Confirmation Procedure .............................. .162
Diagnostic Procedure .......................................... .163
Component Inspection ......................................... .164
Removal and Installation ..................................... .164
DTC P0031, P0032, P0051, P0052 A/F SENSOR 1
HEATER ................................................................. .165
Description ........................................................... .165
CONSULT-II Reference Value in Data Monitor Mode
.165
On Board Diagnosis Logic ................................... .165
DTC Confirmation Procedure .............................. .165
Wiring Diagram .................................................... .167
Diagnostic Procedure .......................................... .170
Component Inspection ......................................... .172
Removal and Installation ..................................... .172
DTC P0037, P0038, P0057, P0058 HO2S2 HEATER .173
Description ........................................................... .173
CONSULT-II Reference Value in Data Monitor Mode .173
On Board Diagnosis Logic ................................... .173
DTC Confirmation Procedure .............................. .174
Wiring Diagram .................................................... .175
Diagnostic Procedure .......................................... .178
Component Inspection ......................................... .180
Removal and Installation ..................................... .180
DTC P0075, P0081 IVT CONTROL SOLENOID
VALVE .................................................................... .181
Component Description ....................................... .181
CONSULT-II Reference Value in Data Monitor Mode .181
On Board Diagnosis Logic ................................... .181
DTC Confirmation Procedure .............................. .181
Wiring Diagram .................................................... .182
Diagnostic Procedure .......................................... .186 Component Inspection .........................................
.187
Removal and Installation ...................................... .187
DTC P0101 MAF SENSOR .................................... .188
Component Description ....................................... .188
CONSULT-II Reference Value in Data Monitor Mode .188
On Board Diagnosis Logic ................................... .188
DTC Confirmation Procedure ............................... .189
Overall Function Check ........................................ .190
Wiring Diagram .................................................... .191
Diagnostic Procedure ........................................... .192
Component Inspection ......................................... .195
Removal and Installation ...................................... .196
DTC P0102, P0103 MAF SENSOR ........................ .197
Component Description ....................................... .197
CONSULT-II Reference Value in Data Monitor Mode .197
On Board Diagnosis Logic ................................... .197
DTC Confirmation Procedure ............................... .198
Wiring Diagram .................................................... .199
Diagnostic Procedure ........................................... .200
Component Inspection ......................................... .203
Removal and Installation ...................................... .204
DTC P0112, P0113 IAT SENSOR ........................... .205
Component Description ....................................... .205
On Board Diagnosis Logic ................................... .205
DTC Confirmation Procedure ............................... .205
Wiring Diagram .................................................... .207
Diagnostic Procedure ........................................... .208
Component Inspection ......................................... .209
Removal and Installation ...................................... .209
DTC P0117, P0118 ECT SENSOR ......................... .210
Component Description ....................................... .210
On Board Diagnosis Logic ................................... .210
DTC Confirmation Procedure ............................... .211
Wiring Diagram .................................................... .212
Diagnostic Procedure ........................................... .213
Component Inspection ......................................... .214
Removal and Installation ...................................... .214
DTC P0122, P0123 TP SENSOR ........................... .215
Component Description ....................................... .215
CONSULT-II Reference Value in Data Monitor Mode .215
On Board Diagnosis Logic ................................... .215
DTC Confirmation Procedure ............................... .216
Wiring Diagram .................................................... .217
Diagnostic Procedure ........................................... .218
Component Inspection ......................................... .221
Removal and Installation ...................................... .221
DTC P0125 ECT SENSOR ..................................... .222
Component Description ....................................... .222
On Board Diagnosis Logic ................................... .222
DTC Confirmation Procedure ............................... .223
Diagnostic Procedure ........................................... .223
Component Inspection ......................................... .224
Removal and Installation ...................................... .224
DTC P0127 IAT SENSOR ....................................... .225
Component Description ....................................... .225
On Board Diagnosis Logic ................................... .225

EC-7
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Revision: 2006 December 2006 FX35/FX45 CONSULT-II Reference Value in Data Monitor Mode
. 589
On Board Diagnosis Logic .................................. . 589
DTC Confirmation Procedure .............................. . 590
Wiring Diagram ................................................... . 591
Diagnostic Procedure .......................................... . 592
Component Inspection ........................................ . 595
Removal and Installation ..................................... . 595
DTC P2138 APP SENSOR .................................... . 596
Component Description ....................................... . 596
CONSULT-II Reference Value in Data Monitor Mode . 596
On Board Diagnosis Logic .................................. . 596
DTC Confirmation Procedure .............................. . 597
Wiring Diagram ................................................... . 598
Diagnostic Procedure .......................................... . 599
Component Inspection ........................................ . 603
Removal and Installation ..................................... . 603
DTC P2A00, P2A03 A/F SENSOR 1 ..................... . 604
Component Description ....................................... . 604
CONSULT-II Reference Value in Data Monitor Mode . 604
On Board Diagnosis Logic .................................. . 604
DTC Confirmation Procedure .............................. . 605
Wiring Diagram ................................................... . 606
Diagnostic Procedure .......................................... . 609
Removal and Installation ..................................... . 615
ASCD BRAKE SWITCH ........................................ . 616
Component Description ....................................... . 616
CONSULT-II Reference Value in Data Monitor Mode . 616
Wiring Diagram ................................................... . 617
Diagnostic Procedure .......................................... . 618
Component Inspection ........................................ . 622
ASCD INDICATOR ................................................ . 623
Component Description ....................................... . 623
CONSULT-II Reference Value in Data Monitor Mode . 623
Wiring Diagram ................................................... . 624
Diagnostic Procedure .......................................... . 625
ELECTRICAL LOAD SIGNAL ............................... . 626
Description .......................................................... . 626
CONSULT-II Reference Value in Data Monitor Mode . 626
Diagnostic Procedure .......................................... . 626
FUEL INJECTOR ................................................... . 628
Component Description ....................................... . 628
CONSULT-II Reference Value in Data Monitor Mode . 628
Wiring Diagram ................................................... . 629
Diagnostic Procedure .......................................... . 630
Component Inspection ........................................ . 634
Removal and Installation ..................................... . 634
FUEL PUMP .......................................................... . 635
Description .......................................................... . 635
CONSULT-II Reference Value in Data Monitor Mode . 635
Wiring Diagram ................................................... . 636 Diagnostic Procedure ..........................................
.637
Component Inspection ......................................... .640
Removal and Installation ..................................... .640
ICC BRAKE SWITCH ............................................ .641
Component Description ....................................... .641
CONSULT-II Reference Value in Data Monitor Mode .641
Wiring Diagram .................................................... .642
Diagnostic Procedure .......................................... .643
Component Inspection ......................................... .648
IGNITION SIGNAL ................................................. .649
Component Description ....................................... .649
Wiring Diagram .................................................... .650
Diagnostic Procedure .......................................... .655
Component Inspection ......................................... .660
Removal and Installation ..................................... .661
REFRIGERANT PRESSURE SENSOR ................. .662
Component Description ....................................... .662
Wiring Diagram .................................................... .663
Diagnostic Procedure .......................................... .664
Removal and Installation ..................................... .666
SNOW MODE SWITCH ......................................... .667
Description ........................................................... .667
CONSULT-II Reference Value in the Data Monitor
Mode .................................................................... .667
Wiring Diagram .................................................... .668
Diagnostic Procedure .......................................... .669
Component Inspection ......................................... .671
MIL AND DATA LINK CONNECTOR ..................... .672
Wiring Diagram .................................................... .672
SERVICE DATA AND SPECIFICATIONS (SDS) ... .674
Fuel Pressure ...................................................... .674
Idle Speed and Ignition Timing ............................ .674
Calculated Load Value ......................................... .674
Mass Air Flow Sensor .......................................... .674
Intake Air Temperature Sensor ............................ .674
Engine Coolant Temperature Sensor .................. .674
Air Fuel Ratio (A/F) Sensor 1 Heater ................... .674
Heated Oxygen sensor 2 Heater ......................... .674
Crankshaft Position Sensor (POS) ...................... .674
Camshaft Position Sensor (PHASE) ................... .674
Throttle Control Motor .......................................... .674
Fuel Injector ......................................................... .675
Fuel Pump ........................................................... .675
VK45DE
INDEX FOR DTC .................................................... .676
DTC No. Index ..................................................... .676
Alphabetical Index ............................................... .680
PRECAUTIONS ..................................................... .684
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .............................................................. .684
Precautions for Procedures without Cowl Top Cover .684
On Board Diagnostic (OBD) System of Engine and
A/T ....................................................................... .684
Precaution ........................................................... .685