2003 NISSAN TEANA wheel torque

A/T CONTROL SYSTEM
AT-31
D
E
F
G
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MA
B
AT

Lock-up Released
In the lock-up released state, the torque converter clutch control valve is set into the unlocked state by drain-
ing the torque converter clutch piston applying pressure and the torque converter clutch piston release pres-
sure is generated.
In this way, the torque converter clutch piston is not coupled.
Lock-up Applied
In the lock-up applied state, the torque converter clutch control valve is set into the locked state by generating
the torque converter clutch piston applying pressure and the torque converter clutch piston release pressure is
drained.
In this way, the torque converter clutch piston is pressed and coupled.
SMOOTH LOCK-UP CONTROL
When shifting from the lock-up released state to the lock-up applied state, the current output to the torque con-
verter clutch solenoid is controlled with the TCM. In this way, when shifting to the lock-up applied state, the
torque converter clutch is temporarily set to the half-clutched state to reduce the shock.
Half-clutched State
The current output from the TCM to the torque converter clutch solenoid is varied to steadily increase the
torque converter clutch solenoid pressure.
In this way, the lock-up applying pressure gradually rises and while the torque converter clutch piston is put
into half-clutched status, the torque converter clutch piston applying pressure is increased and the coupling is
completed smoothly.
Engine Brake Control (Overrun Clutch Control)BCS000ZV
Forward one-way clutch is used to reduce shifting shocks in downshifting operations. This clutch transmits
engine torque to the wheels. However, drive force from the wheels is not transmitted to the engine because
the one-way clutch rotates idle. This means the engine brake is not effective.
The overrun clutch operates when the engine brake is needed.
OVERRUN CLUTCH OPERATING CONDITIONS
SCIA4831E
Selector lever position Gear position Throttle opening
“D” position D
1 , D2 , D3 gear position
Less than 3/16
“3” position 3
1 , 32 , 33 gear position
“2” position 2
1 , 22 gear position
At any position
“1” position 1
1 , 12 gear position

FRONT DISC BRAKE
BR-27
C
D
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BR


It is not necessary to remove bolts on torque member and brake hose except for disassembly or
replacement of caliper assembly. In this case, suspend cylinder body with wire so as not to stretch
brake hose.

Do not damage piston boot.

If any shim is subject to serious corrosion, replace it with a new one.

Always replace shim and inner shim cover as a set when replacing brake pads.

Keep rotor clean from brake fluid.

Burnish brake contact surface after refinishing or replacing rotors, after replacing pads, or it a soft
pedal occurs at very low mileage. Refer toBR-32, "
BRAKE BURNISHING PROCEDURE" .
Removal and Installation of Brake PadBFS000BZ
REMOVAL
1. Remove tyres from vehicle.
2. Remove lower sliding pin bolt.
3. Suspend cylinder body with wire, and remove pads, pad retain-
ers, shims, and shim cover from torque member.
CAUTION:
When removing pad retainers from torque member, lift pad
retainers in the direction by the arrow (shown in the figure)
so as not to damage it.
INSTALLATION
1. Apply PBC (Poly Butyl Cuprysil) grease or silicone-based
grease to the both sides of inner shim and outer shim, install
inner shim and inner shim cover to inner pad and outer shim to
outer pad.
CAUTION:
Securely install shim cover according to shim mounting
direction.
2. Install pad retainers and pads to torque member.
CAUTION:
Securely assemble pad retainers so that they are not being
lifted up from torque member.
3. Press in piston until pads can be installed, and then install cylin-
der body to torque member.
NOTE:
Using a disc brake piston tool (commercial service tool) to easily
press piston in.
CAUTION:
When replacing pads with new ones, press in piston until
pads can be installed. In this case, carefully monitor brake fluid level in reservoir tank because
brake fluid will return to master cylinder reservoir tank.
4. Install lower sliding pin bolt, and tighten it to the specified torque. Refer to BR-26, "
Components" .
5. Secure disc rotor with wheel nut. Depress brake pedal a few times until it gets a responsive touch.
6. Check front disc brake for drag.
7. Install tyres to vehicle.
SBR556E
PFIA0267E
PFIA0273E

BR-28
FRONT DISC BRAKE

Removal and Installation of Brake Caliper AssemblyBFS000C0
REMOVAL
1. Remove tyres from vehicle.
2. Secure disc rotor using wheel nut.
CAUTION:

Do not drop brake pad.
3. Drain brake fluid. Refer to BR-9, "
Drain and Refill" .
4. Remove union bolt and then disconnect brake hose from caliper
assembly.
5. Remove torque member bolts, and remove brake caliper
assembly.
6. Remove disc rotor.
CAUTION:
Put matching marks on wheel hub assembly and disc rotor,
if it necessary to remove disc rotor.
SFIA2057E
SFIA1410J
SDIA2608E

FRONT DISC BRAKE
BR-29
C
D
E
G
H
I
J
K
L
MA
B
BR

INSTALLATION
CAUTION:

Refill with new brake fluid “DOT 3 or DOT 4”.

Do not reuse drained brake fluid.
1. Install disc rotor.
CAUTION:
Align the matching marks of disc rotor and wheel hub,
which were marked at the time of removal when reusing
disc rotor.
2. Install brake caliper assembly to vehicle, and tighten torque
member mounting bolts to the specified torque. Refer to BR-26,
"Components" .
CAUTION:
Before installing torque member to vehicle, wipe oil and
grease on washer seats on steering knuckle and mounting
surface of torque member.
3. Install brake hose to brake caliper assembly, and tighten union bolts to the specified torque. Refer to BR-
26, "Components" .
CAUTION:

Do not reuse copper washers for union bolts.

Connect brake hose aligning with caliper assembly mounting protrusion.
4. Refill with new brake fluid and bleed air. Refer to BR-10, "
Bleeding Brake System" .
5. Check front disc brake for drag.
6. Install tyres to vehicle.
Disassembly and Assembly of Brake Caliper AssemblyBFS000C1
NOTE:
Do not remove torque member, pads, shims, inner shim cover, and pad retainers when disassembling and
assembling cylinder body.
DISASSEMBLY
1. Remove caliper assembly from Vehicle. Refer to BR-28, "Removal and Installation of Brake Caliper
Assembly" .
2. Remove sliding pin bolts, from cylinder body, and remove pads
shims shim cover and pad retainers from torque member.
CAUTION:

When removing pad retainers from torque member, lift
pad retainer in the direction by the arrow (shown in the
figure) so as not to damage it.

Do not drop pads, shims, inner shim cover and pad
retainers from torque member.
3. Remove sliding pins and sliding pin boots from torque member.
SDIA2608E
SBR556E

BR-34
REAR DISC BRAKE

WARNING:
Clean dust on caliper and brake pads with a vacuum dust collector to minimize the hazard of air borne
particles or other materials.
CAUTION:

While removing cylinder body, do never depress brake pedal because piston will pop out.

It is not necessary to remove bolts on torque member and brake hose except for disassembly or
replacement of caliper assembly. In this case, hang cylinder body with wire so as not to stretch
brake hose.

Do not damage piston boot.

If any shim is subject to serious corrosion, replace it with a new one.

Always replace shims and shim covers as a set when replacing brake pads.

Keep rotor clean from brake fluid.

Burnish brake contact surface after refinishing or replacing rotors, after replacing pads, or if a soft
pedal occurs at very low mileage. Refer to BR-39, "
BRAKE BURNISHING PROCEDURE" .
Removal and Installation of Brake PadBFS000C4
REMOVAL
1. Remove tyres from vehicle.
2. Remove upper sliding pin bolt.
3. Suspend cylinder body with wire, and remove pads, pad retainers and shims, and shim covers from
torque member.
INSTALLATION
1. Apply PBC (Poly Butyl Cuprysil) grease or silicone-based grease to the bosh side of inner shim and outer
shin, install inner shim, inner shim cover to inner pad, and outer shim, outer shim cover to outer pad.
2. Install pad retainers and pads to torque member.
3. Press in piston until pads can be installed, and then install cylin-
der body to torque member.
NOTE:
Using a disc brake piston tool (commercial service tool) to easily
press piston in.
CAUTION:
When replacing pads with new ones, press in piston until
pads can be installed. In this case, carefully monitor brake
fluid level in reservoir tank because brake fluid will return to
master cylinder reservoir tank.
4. Install upper sliding pin bolt and tighten to the specified torque. Refer to BR-33, "
Components" .
5. Secure disc rotor with wheel nut. Depress brake pedal a few times until it gets a responsive touch.
6. Check rear disc brake for drag.
7. Install tyres to vehicle.
Refer to GI-10, "Components" and the followings for the symbols in the figure.
1: Apply rubber grease.
2: Apply PBC (Poly Butyl Cuprysil) grease or silicone-based grease.
3: Apply polyglycol ether based lubricant.
: Apply brake fluid.
PFIA0273E

REAR DISC BRAKE
BR-35
C
D
E
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H
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J
K
L
MA
B
BR

Removal and Installation of Brake Caliper AssemblyBFS000C5
REMOVAL
1. Remove tyres from vehicle.
2. Secure disc rotor using wheel nut to wheel hub.
CAUTION:

Do not drop brake pad.

Put matching marks on both disc rotor and wheel hub
before removing disc rotor, if it is necessary to remove
disc rotor.
3. Drain brake fluid. Refer to BR-9, "
Drain and Refill" .
4. Remove union bolt and then disconnect brake hose from caliper
assembly.
5. Remove torque member bolts, and remove brake caliper
assembly.
6. Remove disc rotor.
INSTALLATION
CAUTION:

Refill with new brake fluid “DOT 3 or DOT 4”.

Do not reuse drained brake fluid.
1. Install disc rotor.
CAUTION:
Align the matching marks of disc rotor and wheel hub,
which were marked at the time of removal when reusing
disc rotor.
2. Install brake caliper assembly to vehicle, and tighten torque
member mounting bolts to the specified torque. refer to BR-33,
"Components" .
CAUTION:
Before installing torque member to vehicle, oil and grease
on washer seats on setting knuckle and torque member.
3. Install L-shaped pin of brake hose to caliper assembly as shown
in the figure, and then tighten union bolt to the specified torque.
Refer to BR-33, "
Components" .
CAUTION:

Do not reuse copper washer for union bolt.

Securely install brake hose to protrusion on caliper
assembly.
4. Refill with new brake fluid and bleed air. Refer to BR-10, "
Bleed-
ing Brake System" .
5. Check rear disc brake for drag.
6. Install tyres to vehicle.
SDIA2638E
PFIA0413E
SDIA2638E
SFIA2049E

WHEEL SENSORS
BRC-33
[ABS]
C
D
E
G
H
I
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K
L
MA
B
BRC

WHEEL SENSORSPFP:47910
Removal and InstallationBFS000DH
COMPONENTS
REMOVAL
Be careful of the following:
CAUTION:
When removing the wheel sensor, do not rotate it if possible, and do not forcibly pull the wheel sensor
harness.
INSTALLATION
Note the following, and tighten bolts to the specified torque.

Check the inside of the wheel sensor mounting hole for foreign materials, the rotor surface for iron chips
and other foreign materials. Clean both the wheel sensor mounting hole and the rotor surface before
installation. Replace the wheel sensor if there is any non-standard condition.

Completely push in rubber clamp of strut bracket and body bracket until they lock when installing front
wheel sensor so that the wheel sensor harness will not be twisted. Install grommet groove onto bracket
with yellow line on the harness facing bracket opening (mounting hole). There should be no twists in the
harness when installed.

When installing the rear sensor, securely install the harness mount of the rear suspension member so that
the wheel sensor harness is not twisted. In addition, there should be no twists in the harness when
installed.
SFIA2091E

PRECAUTIONS
BRC-37
[VDC/TCS/ABS]
C
D
E
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H
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MA
B
BRC

[VDC/TCS/ABS]PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
BFS000G3
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WARNING:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions for Brake SystemBFS000DL

Recommended fluid is brake fluid “DOT 3” or “DOT 4”. Refer to MA-14, "RECOMMENDED FLUIDS AND
LUBRICANTS" .

Never reuse drained brake fluid.

Be careful not to splash brake fluid on painted areas.

To clean or wash all parts of master cylinder and disc brake caliper, use clean brake fluid.

Never use mineral oils such as gasoline or kerosene. They will
ruin rubber parts of the hydraulic system.

Using a flare nut wrench when removing flare nuts, and use a
flare nut torque wrench when tighten brake tube flare nuts.

When installing brake tubes, be sure to check torque.

Before working, turn ignition switch OFF and disconnect electri-
cal connector of ABS actuator and electric unit (control unit) or
battery negative terminal.
WARNING:
Clean brake pads and shoes with a waste cloth, then wipe with
a dust collector.
Precautions for Brake ControlBFS000DM

During ABS operation, brake pedal lightly vibrates and a mechanical noise may be heard. This is normal.

Just after starting vehicle after ignition switch ON, brake pedal may vibrate or motor operating noise may
be heard from engine room. This is a normal status of operation check.

Stopping distance may be longer than that of vehicles without ABS when vehicle drives on rough, gravel,
or snow-covered (fresh, deep snow) roads.

When an error is indicated by ABS or another warning lamp, collect all necessary information from cus-
tomer (what symptoms are present under what conditions) and check for simple causes before starting
diagnostic servicing. Besides electrical system inspection, check brake booster operation, brake fluid
level, and fluid leaks.

If tire size and type are used in an improper combination, or brake pads are not Genuine NISSAN parts,
stopping distance or steering stability may deteriorate.

If there is a radio, antenna, or antenna lead-in wire (including wiring) near control module, ABS function
may have a malfunction or error.

If aftermarket parts (car stereo, CD player, etc.) have been installed, check for incidents such as harness
pinches, open circuits, and improper wiring.

If the following components are replaced with non-genuine components or converted, the VDC OFF indi-
cator lamp and SLIP indicator lamp may turn on or the VDC system may not operate properly. Compo-
nents related to suspension (Shock Absorber, Strut, Spring, Bush, etc.), Tires, wheels (exclude specified
SBR820BA