Nissan Maxima Service and Repair Manual: Periodic maintenance
ENGINE COOLANT
System Inspection
WARNING:
Do not remove the radiator cap when the engine is hot. Serious burns could occur
from high pressure
coolant escaping from the radiator. Wrap a thick cloth around the radiator cap.
Slowly turn it a quarter
turn to allow built-up pressure to escape. Carefully remove the radiator cap by
turning it all the way.
CHECKING COOLING SYSTEM HOSES
Check hoses for the following:
- Improper attachment
- Leaks
- Cracks
- Damage
- Loose connections
- Chafing
- Deterioration
CHECKING RESERVOIR TANK LEVEL
- 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.
CHECKING COOLING SYSTEM FOR LEAKS
To check for leaks, apply pressure to the cooling system using suitable
tool and Tool
Tool number : EG17650301 (J-33984-A)
Leakage test pressure : Refer to CO-27, "Radiator".
WARNING:
Do not remove the radiator cap when the engine is hot. Serious
burns could occur from high pressure coolant escaping from
the radiator.
CAUTION:
Higher pressure than specified may cause radiator damage.
CHECKING RADIATOR CAP
- Inspect the radiator cap.
- Replace the radiator cap if the metal plunger cannot be seen
around the edge of the black rubber gasket.
- Replace the radiator cap if deposits of waxy residue or other
foreign material are on the black rubber
gasket or the metal retainer.
NOTE:
Thoroughly wipe out the radiator filler neck to remove any waxy residue or
foreign material
- Pull the negative-pressure valve to open it and check that it
closes completely when released
Standard stroke: 0.7 mm - 1.7 mm (0.03 - 0.07 in)
- Check that there is no dirt or damage on the valve seat of the
radiator cap negative-pressure valve.
- Check that there are no abnormalities in the opening and closing
conditions of the negative-pressure valve.
- Check radiator cap relief pressure using suitable tool and Tool.
Tool number : EG17650301 (J-33984-A)
Standard : Refer to CO-27, "Radiator".
- When connecting the radiator cap to the tester, apply water or
coolant to the radiator cap seal surface.
- Replace the radiator cap if there is an abnormality in the
negative-
pressure valve, or if the open-valve pressure is outside of
the standard values.
CHECKING RADIATOR
Check radiator for mud or clogging. If necessary, clean radiator as follows.
CAUTION:
- Be careful not to bend or damage the radiator fins.
- When radiator is cleaned on-vehicle, remove surrounding parts
in order to access the radiator core.
Tape the harness and electrical connectors to prevent water from entering.
- Spray water to the back side of the radiator core using a side to
side motion from the top down.
- Stop spraying when debris no longer flows from radiator core.
- Blow air into the back side of radiator core using a side to side
motion from the top down.
- Use compressed air lower than 490 kPa (5 kg/cm2, 71 psi) and keep
distance more than 30 cm (11.8 in).
- Continue to blow air until no water sprays out.
- Check for coolant leaks. Repair as necessary.
Changing Engine Coolant
WARNING:
Do not remove the radiator cap when the engine is hot. Serious burns could occur
from high pressure
coolant escaping from the radiator. Wrap a thick cloth around the radiator cap.
Slowly turn it a quarter
turn to allow built-up pressure to escape. Carefully remove the radiator cap by
turning it all the way.
DRAINING ENGINE COOLANT
- Remove the engine under cover. Refer to EM-23, "Removal and
Installation".
- Open radiator drain plug at the bottom of radiator and remove the
radiator cap. This is the only step
required for a partial cooling system drain.
CAUTION:
Do not allow the coolant to contact drive belt.
- If removing the heater core, remove the upper heater hose from the
engine coolant outlet and apply moderate
air pressure of 103.46 kPa (1.055 kg-cm2, 15 psi) maximum for 30 seconds
into the hose to blow out
excess coolant from the core.
- For a complete cooling system drain, remove the reservoir tank and
drain the coolant, and then clean the
reservoir tank before installation.
CAUTION:
Do not allow the coolant to contact drive belt.
- When performing a complete cooling system drain remove the cylinder
block front drain plug and the cylinder
block RH drain plug.
- Check the drained coolant for contaminants such as rust, corrosion
or discoloration.
- If contaminated, flush the engine cooling system.
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 completely empty of coolant and water.
- Apply sealant to the threads of the cylinder block drain plugs.
Use Genuine High Performance Thread
Sealant or equivalent.
Radiator drain plug : Refer to CO-14, "Exploded View".
Cylinder block front drain plug : 9.8 N*m (1.0 kg-m, 87 in-lb)
Cylinder block RH drain plug : 19.6 N*m (2.0 kg-m, 14 ft-lb)
- If disconnected, reattach the upper radiator hose at the engine side.
- Set the vehicle heater controls to the full HOT and heater ON
position. Turn the vehicle ignition ON with
the engine OFF as necessary to activate the heater mode.
- 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.
Tool number : KV991J0070 (J-45695)
- 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.
CAUTION:
Do not use any cooling system additives such as radiator
sealer. Additives may clog the cooling system and cause
damage to the engine, transmission and/or cooling system.
Engine coolant capacity
(with reservoir tank)
: Refer to MA-15, "FOR
USA AND CANADA : Fluids
and Lubricants" (United
States and Canada) or
MA-16, "FOR MEXICO :
Fluids and Lubricants"
(Mexico).
- Install an air hose to the venturi assembly, the air pressure must be
within specification.
Compressed air supply pressure : 549 - 824 kPa (5.6 - 8.4 kg/cm2, 80 - 119
psi)
CAUTION:
The compressed air supply must be equipped with an air dryer.
- 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 visible 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.
- 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.
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
- 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 bring the vacuum to the specified amount.
Recheck for any leaks.
- 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.
- Remove the Tool from the radiator neck opening.
- Fill the cooling system reservoir tank to the specified level and
install the radiator cap. Run the engine to
warm up the cooling system and top up the system as necessary.
- Install the engine under cover. Refer to EXT-15, "Exploded View".
FLUSHING COOLING SYSTEM
- Fill the radiator from the filler neck above the radiator upper
hose and reservoir tank with clean water and
reinstall radiator cap.
- Run the engine and warm it up to normal operating temperature.
- Rev the engine two or three times under no-load.
- Stop the engine and wait until it cools down.
- Drain the water from the system. Refer to CO-11, "Changing Engine
Coolant".
- Repeat steps 1 through 5 until clear water begins to drain from
the radiator.
Cooling Circuit
Cylinder block (RH)
Oil cooler
Cylinder head (RH)
Water pump
Radiator
Water inlet
Thermostat
Cylinder head (LH)
Cylinder block (LH)
To heater
T ...
Other materials:
Head restraints/headrests
WARNING
Head restraints/headrests supplement
the other vehicle safety systems. They may
provide additional protection against injury
in certain rear end collisions. Adjustable
head restraints/headrests must be
adjusted properly, as specified in this section.
Check the adjustment after someo ...
Glove box assembly
Removal and Installation
REMOVAL
Using a suitable tool, gently remove the instrument panel side
finisher (RH).
Open the glove box door and then remove the glove box assembly
screws (A).
Remove the glove box assembly lower screws (A).
Disconnect the harness connectors, then rem ...
P1225 TP sensor
Description
Electric throttle control actuator consists of throttle control motor,
throttle position sensor, etc. The throttle position sensor responds to
the throttle valve movement.
The throttle position sensor has two sensors. These sensors are a
kind of potentiometer which transfor ...