2009 NISSAN LATIO wheel

Compo-
nent " .
5. Check brake for drag.
6. Install the front wheel and tire. Refer to WT-7, " Rotation " .
Removal and Installation of Brake Caliper Assembly INFOID:0000000004305912
REMOVAL
1. Remove front wheel and tire.
2. Secure the disc rotor using wheel nuts. CAUTION:
Put matching marks on wheel hub assembly and disc rotor,
if it is necessary to remove the disc rotor.
3. Drain brake fluid. Refer to BR-9, " Drain and Refill " .
4. Remove the union bolt (A) and discard the copper washers. Remove the brake hose from the cylinder body.
• Protusions (B)
CAUTION:
Do not reuse the copper washers AWFIA0502ZZ

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5. Remove the torque member bolts and remove the cylinder body
and torque member as an assembly.
INSTALLATION 1. Install the torque member and cylinder body as an assembly and tighten the torque member bolts to the specified torque.
Refer to BR-25, " Component " .
CAUTION:
Before installing torque member to vehicle, wipe oil and
grease on mounting surface of steering knuckle and torque
member.
2. Install the brake hose to caliper assembly with new copper washers. Align the brake hose tab between the protusions (B)
on the cylinder body as shown. Tighten the union bolt (A) to the
specified torque. Refer to BR-11, " Hydraulic Circuit " .
CAUTION:
Do not reuse the copper washers
3. Refill with new brake fluid and bleed air. Refer to BR-9, " Bleeding Brake System " .
4. Check front disc brake for drag.
5. Install front wheel and tire. Refer to WT-7, " Rotation " .
Disassembly and Assembly of Brake Caliper Assembly INFOID:0000000004305913
DISASSEMBLY 1. Remove the caliper assembly. Refer to BR-28, " Removal and Installation of Brake Caliper Assembly " .AWFIA0502ZZ
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BR-30< SERVICE INFORMATION >
FRONT DISC BRAKE
2. Remove sliding pin bolts and remove cylinder body from the torque member. Remove pads, shims, pad return spring
(AD22VK) and pad retainers from torque member as necessary.
CAUTION:
When removing pad retainer fr om torque member, lift the
pad retainer in the direction shown by arrow, so as not to
deform it.
3. Remove sliding pins and sliding pin boots from torque member.
4. Place a wooden block as shown, and blow air from union bolt mounting hole to remove piston and piston boot.
CAUTION:
Do not get fingers caught in the piston.
5. Remove piston seal with a flat-bladed screwdriver. CAUTION:
Be careful not to damage the inner wall of cylinder.
INSPECTION AFTER DISASSEMBLY
Cylinder Body
Check the inner wall of cylinder for corrosion, w ear, and damage. Replace cylinder body as necessary.
CAUTION:
Clean cylinder body using new brake fluid. Never use mineral oils such as gasoline or kerosene.
Torque Member
Check for wear, cracks, and damage. R eplace torque member as necessary.
Piston
Check piston surface for corrosion, wear, and damage. Replace piston as necessary.
CAUTION:
The piston sliding surface is plated . Do not polish with sandpaper.
Sliding Pin, Sliding Pin Bolt, and Sliding Pin Boot
Check sliding pins, sliding pin bolts and sliding pin boots for wear, damage, and cracks. Replace applicable
part as necessary.
DISC ROTOR INSPECTION
Visual Inspection
Check surfaces of disc rotor for uneven wear, cr acks, and serious damage. Replace as necessary.
Runout Inspection
1. Using wheel nuts, secure disc rotor to wheels hub at two or more positions. SBR556E
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2. Using a dial indicator, check runout.
CAUTION:
Make sure that wheel bearing axi al end play is within the
specifications before measuring runout. Refer to FAX-6," On-Vehicle Inspection and Service " .
3. If runout is outside the limit, find the minimum runout point by shifting the mounting positions of disc rotor and wheel hub by
one hole.
4. If runout is still out of the specific ation, grind rotor on-car using Tool until runout is within the specified limit.
Thickness Inspection Using a micrometer, check thickness of disc rotor. If thickness is out-
side the specifications, replace disc rotor.
ASSEMBLY CAUTION:
When assembling, use only specified lubricant.
1. Apply rubber grease to new piston seal and install on cylinder body.
2. Apply rubber grease (CL25VF) or polyglycol ether based lubri- cant (AD22VK) to piston boot and apply brake fluid to piston.
Cover the piston end with piston boot, and install cylinder-side
lip on piston boot properly into groove on cylinder body. Runout limit
[measured at 10.0 mm (0.394
in) inside the disc edge] : Refer to
BR-40, " Front
Disc Brake " .
Tool number : 38-PFM90.5 ( — ) Front
Disc Brake " .
Repair limit thickness : Refer to BR-40, " Front
Disc Brake " .
Maximum uneven wear
(measured at 8 positions) : Refer to
BR-40, " Front
Disc Brake " .

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a. Press up adjuster lever with a wire or equivalent from plug hole
(plug hole at the side of wheel cylinder) on the back plate as
shown. Turn frame of adjuster assembly with a flat bladed screw
driver in the direction that narrows frame to narrow enlarged
brake shoe.
3. While pushing and rotating the retainer, pull out shoe hold pin, and remove shoe assembly. CAUTION:
Do not damage the wheel cylinder boot.
4. Remove the parking brake rear cable from the operating lever. CAUTION:
Do not bend the parking brake cable.
5. Disassemble the shoe assembly (shoe, springs, adjuster, adjuster lever).
6. Remove retainer ring (A) with a tool to separate operating lever (C) from brake shoe.
• Retainer ring (A)
• Contact point (B)
• Operating lever (C)
• Pin (D)
INSPECTION AFTER REMOVAL
Lining Thickness Inspection Check lining thickness.
Drum Inner Diameter Inspection Check inner diameter of brake drum.
Measurement area: lining contact surface (center)
Wheel Cylinder Leakage Inspection Rear
Drum Brake " .
Repair limit thickness (A) : Refer to BR-40, " Rear
Drum Brake " .
Rear
Drum Brake " .
Repair limit inner diameter : Refer to BR-40, " Rear
Drum Brake " .

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5. Connect the parking brake rear cable to the operating lever.
6. Install the shoe assembly. After assembly, be sure that each part is installed properly. CAUTION:
Do not damage the wheel cylinder piston boot.
7. Install the brake drum.
8. Depress brake pedal for several times (approximately 2 or 3 times).
9. Adjust clearance of brake shoe. Refer to PB-5, " On-Vehicle Service " .
10. Install rear wheel and tire. Refer to WT-7, " Rotation " .
Removal and Installati on of Wheel Cylinder INFOID:0000000004305917
REMOVAL 1. Drain the brake fluid. Refer to BR-9, " Drain and Refill " .
2. Remove the rear brake shoe assembly. Refer to BR-34, " Removal and Installation of Drum Brake Assem-
bly " .
3. Remove the bleed valve.
4. Disconnect the brake tube from the wheel cylinder.
5. Remove the wheel cylinder bolts and then remo ve the wheel cylinder from the back plate.
INSTALLATION Installation is in the reverse order of removal.
• Tighten bolts and bleed valve to the specified torque. Refer to BR-33, " Component " .
• Refill with new brake fluid and bleed the air. Refer to BR-9, " Bleeding Brake System " .
Disassembly and Assemb ly of Wheel Cylinder INFOID:0000000004305918
DISASSEMBLY 1. Remove boots at the right and left of the wheel cylinder, and pull the pistons and spring out of the cylinder.
2. Remove the piston cups from the pistons.
INSPECTION AFTER DISASSEMBLY Check the pistons, spring and inner wall of the cylinder for wear, corrosion, and damage. Replace any parts as
necessary.
ASSEMBLY CAUTION:
When inserting the piston, be caref ul not to scratch the cylinder.
1. Apply brake fluid to the piston sliding surface on the wheel cylinder.
2. Apply rubber grease to the piston cups and boots and assemble the wheel cylinder as shown.

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CONTENTS
BRAKE CONTROL SYSTEM
ABS
SERVICE INFORMATION .. ..........................
2
PRECAUTIONS .............................................. .....2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
2
Precaution for Brake System .............................. ......2
Precaution for Brake Cont rol .....................................3
Precaution for CAN System ................................ ......3
PREPARATION .............................................. .....4
Special Service Tool ........................................... ......4
Commercial Service Tool .................................... ......4
SYSTEM DESCRIPTION ................................ .....5
System Component ............................................. ......5
ABS Function ...................................................... ......5
EBD Function ...................................................... ......5
Fail-Safe Function ............................................... ......5
Hydraulic Circuit Diagram .........................................6
CAN COMMUNICATION ................................ .....7
System Description ............................................. ......7
TROUBLE DIAGNOSIS ................................. .....8
How to Perform Trouble Diagnosis for Quick and
Accurate Repair ........... .............................................
8
Component Parts and Harness Connector Loca-
tion ...................................................................... ....
11
Schematic ........................................................... ....12
Wiring Diagram - ABS - ... ........................................13 Basic Inspection ..................................................
....16
Warning Lamp and Indicator Timing .................... ....17
Control Unit Input/Output Signal Standard .......... ....17
CONSULT-III Function ( ABS) ..................................18
TROUBLE DIAGNOSIS FOR SELF-DIAG-
NOSTIC ITEMS ................................................. 24
Wheel Sensor System ......................................... ....24
ABS Control Unit Inspection ................................ ....25
Solenoid Valve System Inspection ...................... ....25
Actuator Motor, Motor Re lay, and Circuit Inspec-
tion ....................................................................... ....
26
ABS Control Unit Power and Ground Systems In-
spection ............................................................... ....
27
CAN Communication System Inspection ............. ....28
TROUBLE DIAGNOSES FOR SYMPTOMS ..... 29
ABS Works Frequently ........................................ ....29
Unexpected Pedal Action .................................... ....29
Long Stopping Distance ...................................... ....30
ABS Does Not Work ............................................ ....30
Pedal Vibration or ABS Op eration Noise .................30
WHEEL SENSORS ........................................... 32
Removal and Installation ..................................... ....32
SENSOR ROTOR .............................................. 34
Removal and Installation ..................................... ....34
ACTUATOR AND ELECTRIC UNIT (ASSEM-
BLY) .................................................................. 35
Removal and Installation ..................................... ....35

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SYSTEM DESCRIPTION
System Component INFOID:0000000004307256
ABS Function INFOID:0000000004307257
• The Anti-Lock Brake System detects wheel revolution while braking and improves handling stability during sudden braking by electrically preventing wheel lockup. Maneuverability is also improved for avoiding obsta-
cles during emergency braking.
• If the electrical system malfunctions, the Fail-Safe function is activated, the ABS becomes inoperative and
the ABS warning lamp turns on.
• The electrical system can be diagnosed using CONSULT-III.
• During ABS operation, the brake pedal may vibrate lightly and a mechanical noise may be heard. This is
normal.
• Just after starting the vehicle, the brake pedal may vibrate or motor operating noises may be heard from the
engine compartment. This is normal due to the self check operation.
• Stopping distance may be longer than that of vehicles without ABS when vehicle drives on rough, gravel, or
snow-covered (fresh, deep snow) roads.
EBD Function INFOID:0000000004307258
• Electronic Brake Distribution is a function that detec ts subtle slippages between the front and rear wheels
during braking, and it improves handling stability by elec tronically controlling the brake fluid pressure which
results in reduced rear wheel slippage.
• If the electrical system malfunctions, the Fail-Safe function is activated, the EBD and ABS become inopera-
tive, and the ABS warning lamp and brake warning lamp are turned on.
• The electrical system can be diagnosed using CONSULT-III.
• During EBD operation, the brake pedal may vibrate lightly and a mechanical noise may be heard. This is
normal.
• Just after starting the vehicle, the brake pedal may vibrate or motor operating noises may be heard from the
engine compartment. This is normal due to the self check operation.
Fail-Safe Function INFOID:0000000004307259
CAUTION:
If the Fail-Safe function is activated, perform the Self Diagnosis for ABS system.
ABS/EBD SYSTEM In case of an electrical malfunction with the ABS, the ABS warning lamp wi ll turn on. In case of an electrical
malfunction with the EBD system, the brake warni ng lamp and the ABS warning lamp will turn on.
The system will revert to one of the follo wing conditions of the Fail-Safe function.
1. For ABS malfunction, only the EBD is operative and t he condition of the vehicle is the same condition of
vehicles without ABS system.