cooling NISSAN TEANA 2014 Service Manual

ENGINE MAINTENANCE (QR25DE)MA-13
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ENGINE MAINTENANCE (QR25DE)
DRIVE BELTS
DRIVE BELTS : Checking Drive BeltsINFOID:0000000009464542
WARNING:
Inspect the drive belt only when the engine is stopped.
1. Visually check entire drive belt for wear, damage or cracks.
2. Check that the drive belt auto-tensioner indicator is within the possible use range.
NOTE:
• When new drive belt is installed, the drive belt aut o-tensioner indicator should be within the new drive
belt range.
• Check the drive belt auto-tensioner indicator when the engine is cold.
3. If the drive belt auto-tensioner indicator is out of the possible use range or belt is damaged, replace drive
belt.
DRIVE BELTS : Tension AdjustmentINFOID:0000000009464543
Belt tension is not manually adjustable, it is aut omatically adjusted by the drive belt auto-tensioner.
ENGINE COOLANT
ENGINE COOLANT : System InspectionINFOID:0000000009464544
WARNING:
Do not remove the radiator cap when the engine is hot. Serious burns could occur from high-pressure
engine coolant escaping from the radiator. Wrap a thick cloth around the cap. Slowly push down and
turn it a quarter turn to allow built-up pressure to escape. Carefully remove the cap by pushing it down
and turning it all the way.
CHECKING COOLING SYSTEM HOSES
Check hoses for the following:
• Improper attachment
• Leaks
•Cracks
• Damage
1. Generator pulley 2. Water pump pulley 3. Drive belt auto-tensioner
4. Crankshaft pulley 5. A/C compressor pulley 6. Drive belt retainer boss
A. View A B. New drive belt range C. Allowable use range
D. Indicator (notch)
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MA-14
< PERIODIC MAINTENANCE >
ENGINE MAINTENANCE (QR25DE)
• Loose connections
• Chafing
• Deterioration
CHECKING RESERVOIR LEVEL
• Check if the reservoir tank coolant level is within MIN to MAX when the engine is cool.
• Adjust coolant level if it is too much or too little.
ENGINE COOLANT : Changing Engine CoolantINFOID:0000000009464545
WARNING:
• To avoid being scalded, do not change the coolant when the engine is hot.
• Wrap a thick cloth around cap and carefully remove the cap. First, turn the cap a quarter of a turn to
release built-up pressure. Then push down and turn the cap all the way to remove.
DRAINING ENGINE COOLANT
1. Remove the engine under cover. Refer to EXT-17, "Removal and Installation".
2. Open the radiator drain plug at the bottom of the radi ator and remove the radiator filler cap. This is the
only step required when partially draining the cooling system (radiator only).
CAUTION:
• Do not allow the coolant to contact the drive belt.
• Perform this step when engine is cold.
3. Follow this step for heater core removal/replac ement only. Disconnect the upper heater hose at the
engine side and apply moderate air pressure [103.46 kPa (1.055 kg/cm
2, 15 psi) maximum air pressure]
into the hose for 30 seconds to blow t he excess coolant out of the heater core.
4. When draining all of the coolant in the system, re move the reservoir tank and drain the coolant, then clean
the reservoir tank before installation.
CAUTION:
• Do not allow the coolant to contact the drive belt.
• Perform this step when engine is cold.
5. When draining all of the coolant in the system for engine removal or repair, open the drain plugs (A and B) on the cylinder
block.
: Front
6. Check the drained coolant for contaminants such as rust, corrosion or discoloration.
If the coolant is contaminated, flush the engine cooling system.
REFILLING ENGINE COOLANT
SMA412B
AWBIA1328GB
Revision: November 20132014 Altima NAM

ENGINE MAINTENANCE (QR25DE)MA-15
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1. Install the radiator drain plug. Install the reservoir tank and cylin-
der block drain plug, if removed for a total system drain or for
engine removal or repair.
• The radiator must be completely empty of coolant and
water.
• Apply sealant to the threads of the cylinder block drain
plug. Use Genuine High Pe rformance Thread Sealant or
equivalent. Refer to GI-21, "Recommended Chemical
Products and Sealants".
: Front
CAUTION:
Do not reuse copper sealing washers.
2. If disconnected, reattach the upper radiator hose at the engine side.
3. Set the vehicle heater controls to the full HOT and heat er ON position. Turn the vehicle ignition ON with
the engine OFF as necessary to activate the heater mode.
4. Install the Tool by installing the radiator cap adapter onto the radiator neck opening. Then attach the gauge body assembly
with the refill tube and the venturi assembly to the radiator cap
adapter.
5. Insert the refill hose into the coolant mixture container that is
placed at floor level. Make sure the ball valve is in the closed
position.
• Use recommended coolant or equivalent.
Refer to MA-11, "FOR USA AND CANADA : Fluids and Lubri-
cants".
CAUTION:
Do not use any cooling system additives such as radiator
sealer. Additives may clog th e cooling system and cause
damage to the engine, transmission and/or cooling system.
6. Install an air hose to the venturi assembly, the air pressure must be within specification.
CAUTION:
The compressed air supply must be equipped with an air dryer.
7. The vacuum gauge will begin to rise and there will be an audible hissing noise. During this process open the ball valve on the refill hose slightly. Coolant will be vi sible rising in the refill hose. Once the refill hose is
full of coolant, close the ball valve. Th is will purge any air trapped in the refill hose.
Radiator drain plug : Refer to
CO-16, "Exploded View"
.
Cylinder block drain plug (A) : 54 Nm (5.5 kg-m, 40 ft-lb)
Cylinder block drain plug (B) : 9.8 N·m (1.0 kg-m, 87 in-lb)
Tool number : KV991J0070 (J-45695)
Engine coolant capacity
(with reservoir tank) : Refer to
CO-26, "Capacity"
.
Compressed air
supply pressure : 549 - 824 kPa (5.6 - 8.4 kg/cm
2,
80 - 119 psi)
AWBIA1328GB
LLIA0058E
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MA-16
< PERIODIC MAINTENANCE >
ENGINE MAINTENANCE (QR25DE)
8. Continue to draw the vacuum until the gauge reaches 28 inchesof vacuum. The gauge may not reach 28 inches in high altitude
locations, use the vacuum specifications based on the altitude
above sea level.
9. When the vacuum gauge has reached the specifi ed amount, disconnect the air hose and wait 20 seconds
to see if the system loses any vacuum. If the vacuum level drops, perform any necessary repairs to the
system and repeat steps 6 - 8 to bring the vacuum to the specified amount. Recheck for any leaks.
10. Place the coolant container (with the refill hose insert ed) at the same level as the top of the radiator. Then
open the ball valve on the refill hose so the coolant will be drawn up to fill the cooling system. The cooling
system is full when the vacuum gauge reads zero.
CAUTION:
Do not allow the coolant container to get too low when filling, to avoid air from being drawn into
the cooling system.
11. Remove the Tool from the radiator neck opening.
12. Fill the cooling system reservoir tank to the specif ied level and install the radiator cap. Run the engine to
warm up the cooling system and t op up the system as necessary.
13. Install the engine under cover. Refer to EXT-17, "Removal and Installation"
.
FLUSHING COOLING SYSTEM
1. Fill the radiator from the filler neck above the radiator upper hose and reservoir tank with clean water and
reinstall the radiator filler cap.
2. Run the engine until it reaches normal operating temperature.
3. Rev the engine two or three times under no-load.
4. Stop the engine and wait until it cools down.
5. Drain the water from the system. Refer to CO-12, "Changing Engine Coolant"
.
6. Repeat steps 1 through 5 until clear water begins to drain from the radiator.
FUEL LINES
FUEL LINES : InspectionINFOID:0000000009464546
Inspect fuel lines, fuel filler cap and fuel tank for improper attach-
ment, leaks, cracks, damage, loose connections, chafing or deterio-
ration.
If necessary, repair or replace damaged parts.
AIR CLEANER FILTER
Altitude above sea level Vacuum gauge reading
0 - 100 m (328 ft) : 28 inches of vacuum
300 m (984 ft) : 27 inches of vacuum
500 m (1,641 ft) : 26 inches of vacuum
1,000 m (3,281 ft) : 24 - 25 inches of vacuum
LLIA0057E
SMA803A
Revision: November 20132014 Altima NAM

MA-22
< PERIODIC MAINTENANCE >
ENGINE MAINTENANCE (VQ35DE)
ENGINE MAINTENANCE (VQ35DE)
DRIVE BELTS
DRIVE BELTS : Checking Drive BeltsINFOID:0000000009464553
WARNING:
Inspect and check the drive belts with the engine off.
1. Inspect belt for cracks, fraying, wear or o il adhesion. If necessary, replace with a new one.
2. Rotate the crankshaft pulley two times then ensure t he drive belt auto-tensioner is within the possible use
range.
NOTE:
Inspect drive belt tension when engine is cold.
DRIVE BELTS : Tension AdjustmentINFOID:0000000009464554
Belt tension is not manually adjustable, it is aut omatically adjusted by the drive belt auto-tensioner.
ENGINE COOLANT
ENGINE COOLANT : System InspectionINFOID:0000000009464555
CHECKING COOLING SYSTEM HOSES
Check hoses for the following:
• Improper attachment
• Leaks
• Cracks
• Damage
• Loose connections
• Chafing
• Deterioration
CHECKING RESERVOIR LEVEL
1. Drive belt auto-tensioner 2. Generator 3. A/C compressor
4. Drive belt 5. Crankshaft pulley A. Indicator
B. Range when new drive belt is installed C. Possible use range D. View D Engine front
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Revision: November 20132014 Altima NAM

ENGINE MAINTENANCE (VQ35DE)MA-23
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• Check if the reservoir tank coolant level is within MIN to MAX
range when the engine is cool.
• Adjust coolant level if it is too much or too little.
ENGINE COOLANT : Chang ing Engine CoolantINFOID:0000000009464556
WARNING:
Do not remove the radiator cap when the engine is hot. Serious burns could occur from high-pressure
engine coolant escaping from the radiator. Wrap a thick cloth around the cap. Slowly push down and
turn it a quarter turn to allow built-up pressure to escape. Carefully remove the cap by pushing it down
and turning it all the way.
DRAINING ENGINE COOLANT
1. Remove the engine under cover. Refer to EXT-17, "Removal and Installation".
2. Open the radiator drain plug at the bottom of the radiat or and remove the radiator filler cap. This is the
only step required when partially draining the cooling system (radiator only).
CAUTION:
• Do not allow the coolant to contact the drive belts.
• Perform this step when engine is cold.
3. Follow this step for heater core removal/repl acement only. Disconnect the upper heater hose at the
engine side and apply moderate air pressure [103.46 kPa (1.055 kg/cm
2, 15 psi) maximum air pressure]
into the hose for 30 seconds to blow the excess coolant out of the heater core.
4. When draining all of the coolant in the system, remo ve the reservoir tank and drain the coolant, then clean
the reservoir tank before installation.
CAUTION:
• Do not allow the coolant to contact the drive belts.
• Perform this step when engine is cold.
5. When draining all of the coolant in the system for engine removal or repair, open all of the drain plugs (A-D) on the cylin-
der block.
6. Check the drained coolant for contaminants such as rust, corro- sion or discoloration.
If the coolant is contaminated, flush the engine cooling system.
SMA412B
PBIC2487E
Revision: November 20132014 Altima NAM

MA-24
< PERIODIC MAINTENANCE >
ENGINE MAINTENANCE (VQ35DE)
REFILLING ENGINE COOLANT
1. Install the radiator drain plug. If the cooling system was drained completely, install the reservoir tank and
the cylinder block drain plugs.
• The radiator must be complete ly empty of coolant and water.
• Apply sealant to the threads of the cylinder block drain plug. Use Genuine High Performance
Thread Sealant or equivalent. Refer to GI-21, "Recommended Chemical Products and Sealants"
.
CAUTION:
Do not reuse copp er sealing washers.
2. If disconnected, reattach the upper radiator hose at the engine side.
3. Set the vehicle heater controls to the full HOT and heat er ON position. Turn the vehicle ignition ON with
the engine OFF as necessary to activate the heater mode.
4. Install the Tool by installing the radiator cap adapter onto the radiator neck opening. Then attach the gauge body assembly
with the refill tube and the venturi assembly to the radiator cap
adapter.
5. Insert the refill hose into the coolant mixture container that is placed at floor level. Make sure the ball valve is in the closed
position.
• Use recommended coolant or equivalent.
Refer to MA-11, "FOR USA AND CANADA : Fluids and Lubri-
cants".
CAUTION:
Do not use any cooling system additives such as radiator
sealer. Additives may clog th e cooling system and cause
damage to the engine, transm ission and/or cooling system.
6. Install an air hose to the venturi assembly, the air pressure must be within specification.
CAUTION:
The compressed air supply must be equipped with an air dryer.
7. The vacuum gauge will begin to rise and there will be an audible hissing noise. During this process open the ball valve on the refill hose slightly. Coolant will be vi sible rising in the refill hose. Once the refill hose is
full of coolant, close the ball valve. This will purge any air trapped in the refill hose. Radiator drain plug : Refer to
CO-16, "Exploded View"
Cylinder block front drain plug (LH) (A) (ex-
cept Canada) : 62.0 N·m (6.3 kg-m, 46 ft-lb)
Cylinder block water drain plug (B) : 6.0 N·m (0.6 kg-m, 53 in-lb)
Cylinder block rear drain plug (C) : 78.0 N·m (8.0 kg-m, 58 ft-lb)
Cylinder block RH banjo bolt (D) (oil cooler) : 19.6 N·m (2.0 kg-m, 14 ft-lb)
Tool number : KV991J0070 (J-45695)
Engine coolant capacity
(with reservoir tank) : Refer to
CO-53, "Capacity"
.
Compressed air
supply pressure : 549 - 824 kPa (5.6 - 8.4 kg/cm
2,
80 - 119 psi)
LLIA0058E
Revision: November 20132014 Altima NAM

ENGINE MAINTENANCE (VQ35DE)MA-25
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8. Continue to draw the vacuum until the gauge reaches 28 inches
of vacuum. The gauge may not reach 28 inches in high altitude
locations, use the vacuum specifications based on the altitude
above sea level.
9. When the vacuum gauge has reached the specified amount, disconnect the air hose and wait 20 seconds
to see if the system loses any vacuum. If the vacuum level drops, perform any necessary repairs to the
system and repeat steps 6 - 8 to br ing the vacuum to the specified amount. Recheck for any leaks.
10. Place the coolant container (with the refill hose inserted) at the same level as the top of the radiator. Then
open the ball valve on the refill hose so the coolant will be drawn up to fill the cooling system. The cooling
system is full when the vacuum gauge reads zero.
CAUTION:
Do not allow the coolant container to get too low when filling, to avoid air from being drawn into
the cooling system.
11. Remove the Tool from the radiator neck opening.
12. Fill the cooling system reservoir tank to the specif ied level and install the radiator cap. Run the engine to
warm up the cooling system and top up the system as necessary.
13. Install the engine under cover. Refer to EXT-17, "Removal and Installation"
.
FLUSHING COOLING SYSTEM
1. Fill the radiator from the filler neck above the r adiator upper hose and reservoir tank with clean water and
reinstall radiator filler cap.
2. Run the engine until it reaches normal operating temperature.
3. Rev the engine two or three times under no-load.
4. Stop the engine and wait until it cools down.
5. Drain the water from the system. Refer to CO-36, "Changing Engine Coolant"
.
6. Repeat steps 1 through 5 until clear water begins to drain from the radiator.
FUEL LINES
FUEL LINES : InspectionINFOID:0000000009464557
Inspect fuel lines, fuel filler cap and fuel tank for improper attach-
ment, leaks, cracks, damage, loos e connections, chafing or deterio-
ration.
If necessary, repair or replace damaged parts.
AIR CLEANER FILTER
Altitude above sea level Vacuum gauge reading
0 - 100 m (328 ft) : 28 inches of vacuum
300 m (984 ft) : 27 inches of vacuum
500 m (1,641 ft) : 26 inches of vacuum
1,000 m (3,281 ft) : 24 - 25 inches of vacuum
LLIA0057E
SMA803A
Revision: November 20132014 Altima NAM

PC S-6
< SYSTEM DESCRIPTION >[IPDM E/R]
SYSTEM
RELAY CONTROL SYSTEM : System Description
INFOID:0000000009461598
IPDM E/R activates the internal cont rol circuit to perform the relay ON-OFF control according to the input sig-
nals from various sensors and the request signals received from control units via CAN communication.
CAUTION:
IPDM E/R integrated relays cannot be removed.
POWER CONSUMPTION CONTROL SYSTEM
Control relay Input/output T ransmit unitControl partReference
page
Front fog lamp relay Front fog lamp request signal BCM (CAN) Front fog lamp EXL-101
Headlamp high relay High beam request signal BCM (CAN) Headlamp highEXL-91
Headlamp low relay Low beam request signal BCM (CAN) Headlamp lowEXL-93

(halogen)
EXL-94
(xe-
non)
Tail lamp relay Position light request signal BCM (CAN) •Parking lamp
• Side marker lamp
• License plate lamp
•Tail lamp EXL-103
• Front wiper relay
• Front wiper high relay Front wiper request signal BCM (CAN)
Front wiperWW-48
Front wiper auto stop signal Front wiper motor
Cooling fan relay-1 Cooling fan request signal ECM Cooling fan EC-499

(QR25DE)
EC-953

(VQ35DE)
A/C relay A/C compressor request signal ECM (CAN) A/C compressor HAC-87

(automatic
air condi-
tioner)
HAC-151

(manual air
conditioner)
Ignition relay-1 Ignition switch ON signal BCM (CAN)
Ignition relay-1PCS-58
Vehicle speed signal Combination meter (CAN)
Push-button ignition switch Push-button ignition switch
Fuel pump relay Fuel pump request signal ECM Fuel pump EC-508

(QR25DE)
EC-965

(VQ35DE)
ECM relay ECM relay cont rol signal ECM ECM relay EC-203

(QR25DE)
EC-709

(VQ35DE)
Throttle contro l motor relay Throttle control
motor relay sig-
nal ECMThrottle control motor re-
lay EC-475

(QR25DE)
EC-933

(VQ35DE)
Starter relay Starter relay control signal BCM Starter motor PCS-12
Starter control relay
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PCS-8
< SYSTEM DESCRIPTION >[IPDM E/R]
DIAGNOSIS SYSTEM (IPDM E/R)
DIAGNOSIS SYSTEM (IPDM E/R)
Diagnosis DescriptionINFOID:0000000009461601
AUTO ACTIVE TEST
Description
In auto active test mode, the IPDM
E/R sends a drive signal to the follo wing systems to check their operation.
• Front wiper (LO, HI)
• Front fog lamps
• Parking lamps
• Side marker lamps
• Tail lamps
• License plate lamps
• Daytime running lamps
• Headlamps (LO, HI)
• A/C compressor
• Cooling fans (LO, HI)
Operation Procedure
CAUTION:
Do not start the engine.
NOTE:
When auto active test is performed with hood opened, sprinkle water on windshield before hand.
NOTE:
• If auto active test mode cannot be actuat ed, check door switch system. Refer to DLK-100,
"Component Function Check".
• When auto active test mode has to be cancelled halfway through test, turn ignition switch OFF.
1. Close the hood and lift the wiper arms from the windshield. (Prevent windshield damage due to wiper
operation)
2. Turn ignition switch OFF.
3. Turn the ignition switch ON, and within 20 seconds, press the front door switch LH 10 times. Then turn the ignition switch OFF.
4. Turn the ignition switch ON within 10 seconds. Af ter that the horn sounds once, and the auto active test
starts.
5. After a series of the following operations is repeated 3 times, auto active test is completed.
Inspection in Auto Active Test Mode
When auto active test mode is actuated, the following operation sequence is repeated 3 times.
*: Outputs duty ratio of 50% for 5 seconds → duty ratio of 100% for 5 seconds on the cooling fan control module.
Operation se-
quence Inspection Location Operation
1 Front wiper LO for 3 seconds → HI for 3 seconds
2 •Front fog lamps
• Parking lamps
• Side marker lamps
•Tail lamps
• License plate lamps 10 seconds
3 Daytime running lamps 10 seconds
4 Headlamps LO ⇔ HI 5 times
5 A/C compressor ON ⇔ OFF 5 times
6
*Cooling fans LO for 5 seconds → HI for 5 seconds
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM