engine cooling system INFINITI FX35 2008 Workshop Manual

TROUBLE DIAGNOSISLAN-51
< SERVICE INFORMATION > [CAN]
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NOTE:
CAN data of the air bag diagnosis sensor unit is not used by usual service work, thus it is omitted.
TYPE 6/TYPE 8
NOTE:
Refer to LAN-37, "
Abbreviation List" for the abbreviations of the connecting units.
T: Transmit R: Receive
VDC OFF indicator lamp signal RT
VDC OFF switch signal T
VDC operation signal T
Front wiper stop position signal R T
High beam status signal R T
Hood switch signal R T
Low beam status signal R T
Rear window defogger control signal R R T Signal name/Connecting unit
ECM
4WD
DISP TCM
BCM
I-KEY
STRG M&AABS
ADP
IPDM-E
Signal name/Connecting unitECM
4WD
DISP ICC
TCM
BCM
I-KEY
LANE
STRG M&AABS
LASER
ADP
IPDM-E
A/C compressor feedback signal T R
A/C compressor request signal T R
Accelerator pedal position signal T R R R R
ASCD OD cancel request signal T R
ASCD operation signal T R
Battery voltage signal T R
Closed throttle position signal T R R
Cooling fan speed request signal T R
Engine coolant temperature signal T R
Engine speed signal T RRRR RR
Engine status signal T R
Fuel consumption monitor signal TR
RT
ICC steering switch signal T R
Malfunction indicator lamp signal T R
Snow mode switch signal RT
TR
Wide open throttle position signal T R
AWD warning lamp signal T R
A/C switch/indicator signal TR
RT
System setting signal TR R
RT T
Buzzer output signal TR
TR
TR
ICC OD cancel request signal T R
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RECOMMENDED FLUIDS AND LUBRICANTSMA-9
< SERVICE INFORMATION >
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RECOMMENDED FLUIDS AND LUBRICANTS
Fluids and LubricantsINFOID:0000000001328897
*1: For further details, see “Engine Oil Recommendation”.
*2: Using automatic transmission fluid other than Genuine NISSAN Matic J ATF will cause deterioration in driveability and
automatic transmission durability, and may damage the automatic transmission, which is not covered by the INFINITI new
vehicle limited warranty.
*3: For hot climates, viscosity SAE 90 is suitable for ambient temperatures above 0 °C (32 °F).
*4: Canada NISSAN Au tomatic Transmission Fluid or DEXRON
TM VI type ATF may also be used.
*5: Available in mainland U.S.A. through your INFINITI dealer.
Engine Oil RecommendationINFOID:0000000001328898
NISSAN recommends the use of an energy conser ving oil in order to improve fuel economy.
Select only engine oils that meet the American Petroleum Institute (API) certification and International Lubri-
cant Standardization and Approval Committee (ILSAC) certification and SAE viscosity standard. These oils
have the API certification mark on the front of the c ontainer. Oils which do not have the specified quality label
should not be used as they could cause engine damage.
Capacity (Approximate)
Recommended Fluids/Lubricants
US measure Imp mea-
sure Liter
Engine oil
Drain and
refill With oil fil-
ter change
VK45DE 6-1/8 qt 5-1/8 qt 5.8
 Engine oil with API Certification Mark*1
 Viscosity SAE 5W-30
VQ35DE 5 qt 4 - 1/8 qt 4.7
Without oil
filter
change VK45DE 5-1/2 qt 4-5/8 qt 5.2
VQ35DE 4-5/8 qt 3-7/8 qt 4.4
Dry engine (Overhaul) VK45DE 7-3/8 qt 6-1/8 qt 7.0
VQ35DE 5-3/4 qt 4-3/4 qt 5.4
Cooling
system With res-
ervoir tank
VK45DE 10-5/8 qt 8-3/4 qt 10.0
Genuine NISSAN Long Life Antifreeze/ Coolant
or equivalent
VQ35DE 9-1/8 qt 7-5/8 qt 8.6
Reservoir
tank VK45DE 7/8 qt 3/4 qt 0.8
VQ35DE 7/8 qt 3/4 qt 0.8
Automatic transmission fluid 10-7/8 qt 9-1/8 qt 10.3 Genuine NISSAN Matic J ATF *2
Differential gear oil Front 1-3/8 pt 1-1/8 pt 0.65 Genuine NI
SSAN Differential Oil Hypoid Super
GL-5 80W-90 or API GL-5, Viscosity SAE 80W-
90 *3
Rear 3 pt 2-1/2 pt 1.40
Transfer fluid 2-5/8 pt 2-1/4 pt 1.25 Genuine NISSAN Matic D ATF (Continental U.S.
and Alaska) or Canada NISSAN Automatic
Transmission Fluid or equivalent (if available)
Power steering fluid (PSF) 1-1/8 qt 7/8 qt 1.0 Genuine NISSAN PSF or equivalent*4
Brake fluid — — — Genuine NISSAN Super He
avy Duty Brake Flu-
id*5 or equivalent
DOT 3 (US FMVSS No. 116)
Multi-purpose grease — — — NLGI No. 2 (Lithium soap base)
Windshield washer fluid — — — Genuine NISSAN Windshie
ld Washer Concen-
trate Cleaner & Antifreeze or equivalent
Fuel
recommendation VK45DE — — —
Refer to
GI-5, "
Precaution for Fuel (Unleaded
Premium Gasoline Required)"
VQ35DE——— Refer to
GI-5, "Precaution for Fuel (Unleaded
Premium Gasoline Recommended)"
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MA-10
< SERVICE INFORMATION >
RECOMMENDED FLUIDS AND LUBRICANTS
Anti-Freeze Coolant Mixture Ratio
INFOID:0000000001328899
The engine cooling system is filled at the factory with a high-quality,
year-round, anti-freeze coolant so lution. The anti-freeze solution
contains rust and corrosion inhibitors. Therefore, additional cooling
system additives are not necessary.
CAUTION:
When adding or replacing coolant, be sure to use only Genuine
Nissan Long Life Antifreeze/ Coolant or equivalent with the
proper mixture ratio of 50% an ti-freeze and 50% demineralized
water/distilled water.
Other types of coolant solutions may damage your cooling sys-
tem.
1. API certification mark 2. API service symbol
SAIA1514E
SMA947CA
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ENGINE MAINTENANCE (VQ35DE ENGINE)MA-13
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2. Open radiator drain plug at the bottom of radiator, and then
remove radiator cap.
When draining all of engine coolant in the system , open water drain plugs on cylinder block. Refer
to EM-123, "
Disassembly and Assembly".
3. Remove reservoir tank as necessary, drain engine coolant and clean reservoir tank before installing.
4. Check drained engine coolant for contaminants such as rust, corrosion or discoloration. If contaminated, flush the engine cooling system. Refer to CO-10, "
Changing Engine Coolant".
REFILLING ENGINE COOLANT
1. Install reservoir tank if removed, 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-123, "
Dis-
assembly and Assembly".
2. Make sure that each hose clamp has been firmly tightened.
3. Remove air relief plug on heater hose.
4. Fill radiator, and reservoir tank if removed, to specified level. Pour engine coolant through engine coolant filler neck
slowly of less than 2 (2-1/8 US qt, 1-3/4 lmp qt) a minute
to allow air in system to escape.
 Use Genuine NISSAN Long Li fe Antifreeze/Coolant or
equivalent mixed with water (dis tilled or demineralized).
Refer to MA-9
.
SBIA0444E
Radiator drain plug:
: 1.18 N·m (0.12 kg-m, 10 in-lb)
SBIA0445E
Engine coolant capacity
(With reservoir tank at “MAX” level): Approximately 8.6 (9-1/8 US qt, 7-5/8 lmp qt)
SMA182B
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MA-14
< SERVICE INFORMATION >
ENGINE MAINTENANCE (VQ35DE ENGINE)
 When engine coolant overflows air relief hole on heater hose,install air relief plug with new O-ring.
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 the engine and cool down to less than approximately 50 °C (122 °F).
 Cool down using fan to reduce the time.
 If necessary, refill radiator up to filler neck with engine coolant.
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.
11. Warm up the 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 step 4 through 7 until engine coolant level no
longer drops.
FLUSHING COOLING SYSTEM
1. Install reservoir tank, and radiator drain plug.
If water drain plugs on cylinder block are removed, close and tighten them. Refer to EM-123, "
Dis-
assembly and Assembly".
2. Remove air relief plug on heater hose.
3. Fill radiator with water until water spills from the ai r relief hole, then close air relief plug. Fill radiator and
reservoir tank with water and reinstall radiator cap. Reservoir tank engine coolant capacity
(At “MAX” level)
: 0.8 (7/8 US qt, 3/4 lmp qt)
Air relief plug: : 1.19 N·m (0.12 kg-m, 11 in-lb)
SMA412B
Radiator drain plug:
: 1.18 N·m (0.12 kg-m, 10 in-lb)
SBIA0445E
Air relief plug: : 1.19 N·m (0.12 kg-m, 11 in-lb)
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MA-20
< SERVICE INFORMATION >
ENGINE MAINTENANCE (VK45DE ENGINE)
2. Open radiator drain plug at the bottom of radiator, and thenremove radiator cap.
When draining all of engine cool ant in the system, open water drai n plugs on cylinder block. Refer
to EM-242, "
Disassembly and Assembly".
3. Remove reservoir tank as necessary, and drain engine coolant and clean reservoir tank before installing.
4. Check drained engine coolant for contaminants such as rust, corrosion or discoloration. If contaminated, flush the engine cooling system. Refer to "FLUSHING COOLING SYSTEM".
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-242, "
Dis-
assembly and 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 fill er 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 allo w air in system to escape.
 Use Genuine NISSAN long Life Antifreeze/Coolant or equivalent mixed with water (distilled or
demineralized). Refer to MA-9
.
SBIA0444E
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)
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ENGINE MAINTENANCE (VK45DE ENGINE)MA-21
< SERVICE INFORMATION >
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 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 warm ing-up time is approximately 10 minutes at 3,000
rpm.
 Make sure thermostat opening condition by touching r adiator 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.
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-242, "
Dis-
assembly and 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. Reservoir tank engine coolant capacity
(At “MAX” level):
0.8 (7/8 US qt, 3/4 lmp qt)
SMA412B
Radiator drain plug:
: 1.19 N·m (0.12 kg-m, 11 in-lb)
PBIC1530E
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CHASSIS AND BODY MAINTENANCEMA-27
< SERVICE INFORMATION >
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A/T fluid level will be greatly affected by temper ature as shown in figure. Therefore, be certain to
perform operation while checki ng data with CONSULT-III.
a. Connect CONSULT-III to data link connector.
b. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
c. Read out the value of “ATF TEMP 1”.
7. Recheck A/T fluid level at A/T fluid temperatures of approximately 65 °C (149 °F) using “HOT” range on A/
T fluid level gauge.
CAUTION:
 When wiping away the A/T fluid level gauge, always use lint-free paper, not a cloth one.
 To check A/T fluid level, inser t the A/T fluid level gauge
until the cap contacts the en d of the A/T fluid charging
pipe, with the A/T fluid level gauge reversed from the nor-
mal attachment conditions as shown.
8. Check A/T fluid condition.  If ATF is very dark or smells burned, check operation of A/T.
Flush cooling system after repair of A/T.
 If ATF contains frictional material (clutches, bands, etc.), replace radiator and flush cooler line using cleaning solvent
and compressed air after repair of A/T. Refer to CO-13
(for
VQ35DE) or CO-40
(for VK45DE) and AT-13, "A/T Fluid
Cooler Cleaning".
9. Install the removed A/T fluid level gauge in the A/T fluid charging pipe.
10. Tighten level gauge bolt.
Changing A/T FluidINFOID:0000000001328920
1. Warm up ATF.
2. Stop engine. Level gauge bolt:
: 5.1 N·m (0.52 kg-m, 45 in-lb)
SLIA0016E
SCIA2899E
SCIA4896E
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IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PG-17
< SERVICE INFORMATION >
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IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE
ROOM)
System DescriptionINFOID:0000000001328870
 IPDM E/R (Intelligent Power Distribution Module Engi ne Room) integrates the relay box and fuse block
which were originally placed in engine compartment. It c ontrols integrated relay via IPDM E/R control circuit.
 IPDM E/R-integrated control circuit performs ON-OFF operation of relay, CAN communication control, oil
pressure switch signal, and hood switch signal reception, etc.
 It controls operation of each electrical pa rt via ECM, BCM and CAN communication lines.
CAUTION:
None of the IPDM E/R-integr ated relays can be removed.
SYSTEMS CONTROLLED BY IPDM E/R
IPDM E/R receives a request signal fr om each control unit with CAN communication. It controls each system.
CAN COMMUNICATION LINE CONTROL
With CAN communication, by connecting each control uni t using two communication lines (CAN-L line, CAN-H
line), it is possible to transmit maximum amount of in formation with minimum wiring. Each control unit can
transmit and receive data, and reads necessary information only.
Fail- Safe Control
 When CAN communication with other control units is impos sible, IPDM E/R performs fail-safe control. After
CAN communication recovers normally, it also returns to normal control.
 Operation of control parts by IPDM E/R during fail-safe mode is as follows:
IPDM E/R STATUS CONTROL
In order to save power, IPDM E/R switches status by itself based on each operating condition.
1. CAN communication status  CAN communication is normally performed with other control units.
 Individual unit control by IPDM E/R is normally performed.
 When sleep request signal is received from BCM, mode is switched to sleep waiting status.
2. Sleep waiting status  Process to stop CAN communication is activated.
Control system Transmit control unit Control part
Lamp control BCM  Headlamps (HI, LO)
 Front fog lamps
 Parking, license plate, side marker and tail lamps
Wiper control BCM Front wipers
Rear window defogger control BCM Rear window defogger
A/C compressor control ECM A/C compressor (magnet clutch)
Cooling fan control ECM Cooling fan
Horn control BCM Horn
Controlled system Fail-safe mode
Headlamp  With the ignition switch ON, the headlamp (low) is ON.
 With the ignition switch OFF, the headlamp (low) is OFF.
Parking, license plate side marker, and
tail lamps  With the ignition switch ON, the parking, license plate, side marker and tail lamps is ON.
 With the ignition switch OFF, the parking, license plate, side marker and tail lamps is OFF.
Cooling fan  With the ignition switch ON, the cooling fan HI operates.
 With the ignition switch OFF, the cooling fan stops.
Front wiper Until the ignition switch is turned OFF, the front wiper LO and HI remains in the same status
it was in just before fail-safe control was initiated.
Rear window defogger Rear window defogger relay OFF
A/C compressor A/C compressor OFF
Front fog lamps Front fog lamp relay OFF
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PG-20
< SERVICE INFORMATION >
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
NOTE:
This item is displayed, but cannot be tested.
Auto Active TestINFOID:0000000001328875
DESCRIPTION
In auto active test mode, operation inspection can be performed when IPDM E/R sends a drive signal to the
following systems:
 Rear window defogger
 Front wipers
 Parking, license plate, side marker and tail lamps
 Front fog lamps
 Headlamps (Hi, Lo)
 A/C compressor (magnetic clutch)
 Cooling fan
OPERATION PROCEDURE
1. Close hood and front door (passenger side), and then lift wiper arms away from windshield (to prevent
glass damage by wiper operation).
NOTE:
When auto active test is performed with hood opened, sprinkle water on windshield beforehand.
2. Turn ignition switch OFF.
3. Turn ignition switch ON, and within 20 seconds, pre ss drivers door switch 10 times (close other doors).
Then turn ignition switch OFF.
4. Turn ignition switch ON within 10 seconds after ignition switch OFF.
5. When auto active test mode is actuated, horn chir ps once oil pressure warning lamp starts blinking.
6. After a series of operations is repeated three times, auto active test is completed. NOTE:
When auto active test mode has to be cancelled halfway, turn ignition switch OFF.
CAUTION:
Be sure to inspect BL-38, "
Check Door Switch" when the auto active t est cannot be performed.
INSPECTION IN AUTO ACTIVE TEST MODE
When auto active test mode is actuated, the following eight steps are repeated three times.
Front wiper (HI, LO) operation FRONT WIPER With a certain operation (Off, Hi, Lo),
the front wiper relay (Lo, Hi) can
be operated.
Cooling fan operation MOTOR FAN With a certain operation (1, 2, 3, 4), the cooling fan can be operated.
Lamp (HI, LO, FOG) opera-
tion LAMPSWith a certain operation (Off, Hi, Lo, Fog), the lamp relay (Lo, Hi, Fog)
can be operated.
Cornering lamp operation CORNERING LAMP
NOTE—
Horn operation HORN With a certain On-Off operation, the horn relay can be operated. Test item CONSULT-III screen display Description
PKIB6583E
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