thermostat INFINITI M35 2007 Factory User Guide

ENGINE COOLANT
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Revision: 2007 April2007 M35/M45
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-257,
"ASSEMBLY" .
2. Make sure that each hose clamp has been firmly tightened.
3. Remove air relief plug (1) 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.
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.Radiator drain plug:
: 1.2 N·m (0.12 kg-m, 11 in-lb)
: Engine front
PBIC3394E
Engine coolant capacity
(With reservoir tank at “MAX” level):
Approx. 10.4 (11 US qt, 9-1/8 Imp qt)
Reservoir tank engine coolant capacity
(At “MAX” level):
0.8 (7/8 US qt, 3/4 lmp qt)
Air relief plug:
: 1.2 N·m (0.12 kg-m, 11 in-lb)
SMA412B

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ENGINE COOLANT
Revision: 2007 April2007 M35/M45
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-257,
"ASSEMBLY" .
2. Remove air relief plug (1) 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-40, "
DRAINING ENGINE COOLANT" .
8. Repeat steps 1 through 7 until clear water begins to drain from radiator.Radiator drain plug:
: 1.2 N·m (0.12 kg-m, 11 in-lb)
: Engine front
PBIC3394E
Air relief plug:
: 1.2 N·m (0.12 kg-m, 11 in-lb)

RADIATOR
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Revision: 2007 April2007 M35/M45
RADIATORPFP:21400
ComponentsNBS004RG

Refer to GI-11, "Components" for symbols in the figure.
Removal and InstallationNBS004RH
WARNING:
Do not remove radiator cap when engine is hot. Serious burns could occur from high-pressure engine
coolant escaping from thermostat housing. Wrap a thick cloth around radiator cap. Slowly turn it a
quarter of a turn to release built-up pressure. Carefully remove radiator cap by turning it all the way.
REMOVAL
1. Remove the following parts:

Front engine undercover (power tool).

Engine room cover (RH and LH). Refer to EM-173, "ENGINE ROOM COVER" .

Air duct (inlet) and air cleaner case assembly. Refer to EM-177, "AIR CLEANER AND AIR DUCT" .
2. Remove front grille and front grille support. Refer to EI-16, "
FRONT GRILLE" .
3. Drain engine coolant from radiator. Refer to CO-40, "
ENGINE COOLANT" .
1. Reservoir tank cap 2. Reservoir tank 3. Reservoir tank bracket
4. Reservoir tank hose 5. Radiator hose (upper) 6. Air guide
7. Mount bracket (RH) 8. Mounting rubber (upper) 9. A/C condenser
10. Mount bracket (LH) 11. Radiator 12. Mounting rubber (lower)
13. A/T fluid cooler hose 14. A/T fluid cooler hose 15. O-ring
16. Drain plug 17. Radiator hose (lower) 18. Cooling fan assembly
A. To thermostat housing B. To water suction pipe C. To transmission
PBIC4718E

THERMOSTAT AND WATER CONTROL VALVE
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Revision: 2007 April2007 M35/M45
THERMOSTAT AND WATER CONTROL VALVEPFP:21200
ComponentsNBS004RR

Refer to GI-11, "Components" for symbols in the figure.
Removal and InstallationNBS004RS
REMOVAL
1. Remove engine room cover (RH and LH). Refer to EM-173, "ENGINE ROOM COVER" .
2. Remove engine cover with power tool. Refer to EM-179, "
INTAKE MANIFOLD" .
3. Remove air duct (inlet). Refer to EM-177, "
AIR CLEANER AND AIR DUCT" .
4. Drain engine coolant from drain plugs on radiator and both side of cylinder block. Refer to CO-40, "
Chang-
ing Engine Coolant" and EM-253, "DISASSEMBLY" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.
1. Water connector 2. O-ring 3. Rubber ring
4. Heater hose 5. Water control valve 6. Water outlet
7. Gasket 8. O-ring 9. Water outlet pipe
10. Thermostat housing 11. Radiator cap 12. Radiator hose (upper)
13. Thermostat 14. Rubber ring 15. Water inlet
16. Water suction hose 17. Water suction pipe 18. Radiator hose (lower)
19. Gasket 20. O-ring 21. Heater pipe
22. Heater hose
A. To radiator B. To intake manifold adapter C. To cylinder block
D. To cylinder head (right bank) E. To cylinder head (left bank) F. To heater core
PBIC3306E

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THERMOSTAT AND WATER CONTROL VALVE
Revision: 2007 April2007 M35/M45
5. Disconnect water suction hose from water inlet.
6. Remove water inlet and thermostat.
CAUTION:
Do not disassemble thermostat.
7. Remove intake manifolds (upper and lower). Refer to EM-179, "
INTAKE MANIFOLD" .
8. Disconnect radiator hose (upper) from thermostat housing.
9. Disconnect heater hoses from water outlet and heater pipe.
10. 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 tempar-
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.
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.)
SLC252B
Thermostat Water control valve
Valve opening temperature 80 - 84°C (176 - 183°F) 93.5 - 96.5°C (200 - 206°F)
Maximum valve liftMore 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)
PBIC0157E

THERMOSTAT AND WATER CONTROL VALVE
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Revision: 2007 April2007 M35/M45

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 (commercial service tool) and radiator
cap tester (commercial service tool). Refer to CO-40, "
LEAK CHECK" .

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

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SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: 2007 April2007 M35/M45
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Standard and LimitNBS004RT
ENGINE COOLANT CAPACITY (APPROXIMATE)
Unit: (US qt, Imp qt)
RADIATOR
Unit: kPa (kg/cm2 , psi)
THERMOSTAT
WATER CONTROL VALVE
Engine coolant capacity (With reservoir tank at “MAX” level) 10.4 (11, 9-1/8)
Reservoir tank engine coolant capacity (at “MAX” level) 0.8 (7/8, 3/4)
Radiator cap relief pressureStandard 78 - 98 (0.8 - 1.0, 11 - 14)
Limit 59 (0.6, 9)
Leakage testing pressure 157 (1.6, 23)
ThermostatStandard
Valve opening temperature 80 - 84°C (176 - 183°F)
Maximum valve lift More than 10 mm/95°C (0.39 in/203°F)
Valve closing temperature 77°C (171°F)
Water control valveStandard
Valve opening temperature 93.5 - 96.5°C (200 - 206°F)
Maximum valve lift More than 8 mm/108°C (0.315 in/226°F)
Valve closing temperature 90°C (194°F)

EC-3
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ECA
Revision: 2007 April2007 M35/M45 On Board Diagnosis Logic ................................... 229
DTC Confirmation Procedure ............................... 229
Diagnostic Procedure ........................................... 230
Component Inspection ......................................... 231
Removal and Installation ...................................... 231
DTC P0128 THERMOSTAT FUNCTION ................ 232
On Board Diagnosis Logic ................................... 232
DTC Confirmation Procedure ............................... 232
Diagnostic Procedure ........................................... 232
Component Inspection ......................................... 233
Removal and Installation ...................................... 233
DTC P0130, P0150 A/F SENSOR 1 ....................... 234
Component Description ........................................ 234
CONSULT-II Reference Value in Data Monitor Mode
. 234
On Board Diagnosis Logic ................................... 234
DTC Confirmation Procedure ............................... 234
Overall Function Check ........................................ 236
Wiring Diagram .................................................... 237
Diagnostic Procedure ........................................... 240
Removal and Installation ...................................... 243
DTC P0131, P0151 A/F SENSOR 1 ....................... 244
Component Description ........................................ 244
CONSULT-II Reference Value in Data Monitor Mode
. 244
On Board Diagnosis Logic ................................... 244
DTC Confirmation Procedure ............................... 244
Wiring Diagram .................................................... 246
Diagnostic Procedure ........................................... 249
Removal and Installation ...................................... 252
DTC P0132, P0152 A/F SENSOR 1 ....................... 253
Component Description ........................................ 253
CONSULT-II Reference Value in Data Monitor Mode
. 253
On Board Diagnosis Logic ................................... 253
DTC Confirmation Procedure ............................... 253
Wiring Diagram .................................................... 255
Diagnostic Procedure ........................................... 258
Removal and Installation ...................................... 261
DTC P0133, P0153 A/F SENSOR 1 ....................... 262
Component Description ........................................ 262
CONSULT-II Reference Value in Data Monitor Mode
. 262
On Board Diagnosis Logic ................................... 262
DTC Confirmation Procedure ............................... 263
Wiring Diagram .................................................... 265
Diagnostic Procedure ........................................... 268
Removal and Installation ...................................... 273
DTC P0137, P0157 HO2S2 .................................... 274
Component Description ........................................ 274
CONSULT-II Reference Value in Data Monitor Mode
. 274
On Board Diagnosis Logic ................................... 274
DTC Confirmation Procedure ............................... 275
Overall Function Check ........................................ 275
Wiring Diagram .................................................... 277
Diagnostic Procedure ........................................... 280
Component Inspection ......................................... 282
Removal and Installation ...................................... 284DTC P0138, P0158 HO2S2 .....................................285
Component Description ........................................285
CONSULT-II Reference Value in Data Monitor Mode
.285
On Board Diagnosis Logic ....................................285
DTC Confirmation Procedure ...............................286
Overall Function Check ........................................287
Wiring Diagram .....................................................288
Diagnostic Procedure ...........................................291
Component Inspection ..........................................295
Removal and Installation ......................................297
DTC P0139, P0159 HO2S2 .....................................298
Component Description ........................................298
CONSULT-II Reference Value in Data Monitor Mode
.298
On Board Diagnosis Logic ....................................298
DTC Confirmation Procedure ...............................299
Overall Function Check ........................................299
Wiring Diagram .....................................................301
Diagnostic Procedure ...........................................304
Component Inspection ..........................................306
Removal and Installation ......................................308
DTC P0171, P0174 FUEL INJECTION SYSTEM
FUNCTION ..............................................................309
On Board Diagnosis Logic ....................................309
DTC Confirmation Procedure ...............................309
Wiring Diagram .....................................................311
Diagnostic Procedure ...........................................315
DTC P0172, P0175 FUEL INJECTION SYSTEM
FUNCTION ..............................................................320
On Board Diagnosis Logic ....................................320
DTC Confirmation Procedure ...............................320
Wiring Diagram .....................................................322
Diagnostic Procedure ...........................................326
DTC P0181 FTT SENSOR ......................................331
Component Description ........................................331
On Board Diagnosis Logic ....................................331
DTC Confirmation Procedure ...............................331
Wiring Diagram .....................................................333
Diagnostic Procedure ...........................................334
Component Inspection ..........................................336
Removal and Installation ......................................336
DTC P0182, P0183 FTT SENSOR ..........................337
Component Description ........................................337
On Board Diagnosis Logic ....................................337
DTC Confirmation Procedure ...............................337
Wiring Diagram .....................................................338
Diagnostic Procedure ...........................................339
Component Inspection ..........................................341
Removal and Installation ......................................341
DTC P0222, P0223 TP SENSOR ............................342
Component Description ........................................342
CONSULT-II Reference Value in Data Monitor Mode
.342
On Board Diagnosis Logic ....................................342
DTC Confirmation Procedure ...............................343
Wiring Diagram .....................................................344
Diagnostic Procedure ...........................................345

EC-10Revision: 2007 April2007 M35/M45 DTC P0127 IAT SENSOR .......................................942
Component Description ........................................942
On Board Diagnosis Logic ....................................942
DTC Confirmation Procedure ...............................942
Diagnostic Procedure ...........................................943
Component Inspection ..........................................944
Removal and Installation ......................................944
DTC P0128 THERMOSTAT FUNCTION .................945
On Board Diagnosis Logic ....................................945
DTC Confirmation Procedure ...............................945
Diagnostic Procedure ...........................................945
Component Inspection ..........................................946
Removal and Installation ......................................946
DTC P0130, P0150 A/F SENSOR 1 ........................947
Component Description ........................................947
CONSULT-II Reference Value in Data Monitor Mode
.947
On Board Diagnosis Logic ....................................947
DTC Confirmation Procedure ...............................947
Overall Function Check ........................................949
Wiring Diagram .....................................................950
Diagnostic Procedure ...........................................953
Removal and Installation ......................................956
DTC P0131, P0151 A/F SENSOR 1 ........................957
Component Description ........................................957
CONSULT-II Reference Value in Data Monitor Mode
.957
On Board Diagnosis Logic ....................................957
DTC Confirmation Procedure ...............................957
Wiring Diagram .....................................................959
Diagnostic Procedure ...........................................962
Removal and Installation ......................................965
DTC P0132, P0152 A/F SENSOR 1 ........................966
Component Description ........................................966
CONSULT-II Reference Value in Data Monitor Mode
.966
On Board Diagnosis Logic ....................................966
DTC Confirmation Procedure ...............................966
Wiring Diagram .....................................................968
Diagnostic Procedure ...........................................971
Removal and Installation ......................................974
DTC P0133, P0153 A/F SENSOR 1 ........................975
Component Description ........................................975
CONSULT-II Reference Value in Data Monitor Mode
.975
On Board Diagnosis Logic ....................................975
DTC Confirmation Procedure ...............................976
Wiring Diagram .....................................................978
Diagnostic Procedure ...........................................981
Removal and Installation ......................................986
DTC P0137, P0157 HO2S2 .....................................987
Component Description ........................................987
CONSULT-II Reference Value in Data Monitor Mode
.987
On Board Diagnosis Logic ....................................987
DTC Confirmation Procedure ...............................988
Overall Function Check ........................................988
Wiring Diagram .....................................................990
Diagnostic Procedure ...........................................993Component Inspection ..........................................996
Removal and Installation .......................................997
DTC P0138, P0158 HO2S2 .....................................998
Component Description ........................................998
CONSULT-II Reference Value in Data Monitor Mode
.998
On Board Diagnosis Logic ....................................998
DTC Confirmation Procedure ................................999
Overall Function Check ........................................1000
Wiring Diagram ....................................................1001
Diagnostic Procedure ...........................................1004
Component Inspection .........................................1009
Removal and Installation ......................................1010
DTC P0139, P0159 HO2S2 ....................................1011
Component Description .......................................1011
CONSULT-II Reference Value in Data Monitor Mode
1011
On Board Diagnosis Logic ...................................1011
DTC Confirmation Procedure ...............................1012
Overall Function Check ........................................1012
Wiring Diagram ....................................................1014
Diagnostic Procedure ...........................................1017
Component Inspection .........................................1020
Removal and Installation ......................................1021
DTC P0171, P0174 FUEL INJECTION SYSTEM
FUNCTION .............................................................1022
On Board Diagnosis Logic ...................................1022
DTC Confirmation Procedure ...............................1022
Wiring Diagram ....................................................1024
Diagnostic Procedure ...........................................1028
DTC P0172, P0175 FUEL INJECTION SYSTEM
FUNCTION .............................................................1033
On Board Diagnosis Logic ...................................1033
DTC Confirmation Procedure ...............................1033
Wiring Diagram ....................................................1035
Diagnostic Procedure ...........................................1039
DTC P0181 FTT SENSOR .....................................1043
Component Description .......................................1043
On Board Diagnosis Logic ...................................1043
DTC Confirmation Procedure ...............................1043
Wiring Diagram ....................................................1045
Diagnostic Procedure ...........................................1046
Component Inspection .........................................1048
Removal and Installation ......................................1048
DTC P0182, P0183 FTT SENSOR .........................1049
Component Description .......................................1049
On Board Diagnosis Logic ...................................1049
DTC Confirmation Procedure ...............................1049
Wiring Diagram ....................................................1050
Diagnostic Procedure ...........................................1051
Component Inspection .........................................1053
Removal and Installation ......................................1053
DTC P0222, P0223 TP SENSOR ...........................1054
Component Description .......................................1054
CONSULT-II Reference Value in Data Monitor Mode
1054
On Board Diagnosis Logic ...................................1054
DTC Confirmation Procedure ...............................1055
Wiring Diagram ....................................................1056

EC-96
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TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
DTC Inspection Priority ChartNBS004SZ
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
NOTE:

If DTC U1000 or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-161, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .

If DTC U1010 is displayed with other DTC, first perform the trouble diagnosis for DTC U1010. Refer
to EC-164, "
DTC U1010 CAN COMMUNICATION" .
Priority Detected items (DTC)
1

U1000 U1001 CAN communication line

U1010 CAN communication

P0101 P0102 P0103 Mass air flow sensor

P0112 P0113 P0127 Intake air temperature sensor

P0117 P0118 P0125 Engine coolant temperature sensor

P0122 P0123 P0222 P0223 P1225 P1226 P2135 Throttle position sensor

P0128 Thermostat function

P0181 P0182 P0183 Fuel tank temperature sensor

P0327 P0328 Knock sensor

P0335 Crankshaft position sensor (POS)

P0340 P0345 Camshaft position sensor (PHASE)

P0460 P0461 P0462 P0463 Fuel level sensor

P0500 Vehicle speed sensor

P0643 Sensor power supply

P0605 ECM

P0700 TCM

P0705 P0850 Park/Neutral position (PNP) switch

P1550 P1551 P1552 P1553 P1554 Battery current sensor

P1610 - P1615 NATS

P2122 P2123 P2127 P2128 P2138 Accelerator pedal position sensor