2009 NISSAN LATIO ECU

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3. Remove lock plate, and remove brake hose.
INSTALLATION 1. Connect brake hose to brake tube, and temporaril y tighten flare nut by hand as much as possible.
2. Secure it to the bracket with the lock plate.
3. Tighten flare nut to the specified torque using a suitable tool. Refer to BR-11, " Hydraulic Circuit " .
4. Bleed the air from the brake hydraulic system. Refer to BR-9, " Bleeding Brake System " .
Inspection After Installation INFOID:0000000004305898
CAUTION:
• Always disassemble the parts and retighten their fitti ngs, if a brake fluid leak is detected. Replace
applicable part with a new one, if damaged part is detected.
• If leak is detected at the connections, retighten it or replace the damaged part.
1. Check brake hose, tube, and connections for fluid leak s, damage, twisting, deformation, contact with other
parts, and loose connections.
2. While depressing pedal under a force of 785 N (80 kg-f, 177 lb-f) with the engine running for approxi- mately 5 seconds, check for fluid leaks from each part of the brake hydraulic system. SFIA1120E

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AUTIO N:
W hile w ork in g, c o ver p rim ary p is to n r o d w it h c lo th t o p re ven t it f r o m b ein g d am ag ed .
1 . Secu re fla nge o f c yli n der b ody in v is e a s s h ow n.
C AUTIO N:
• Use c o pper p la te o r c lo th t o c o ver f la n ge w hen s ecu rin g
i n v is e.
• W hen s ecu rin g m aste r c ylin der a ssem bly in a v is e, b e
s u re n ot t o o ver-tig hte n .
2 . Usin g a p in -p unch [c o m merc ia l s e rv ic e to ol: d ia m ete r a ppro x. 4
m m ( 0 .1 6 in )], r e m ove p in f r o m r e se rv o ir ta nk.
3 . Rem ove m aste r c ylin der a sse m bly fr o m v is e .
4 . Rem ove r e se rv o ir ta nk a nd g ro m met fr o m c ylin der b ody.
5 . While p ush in g p rim ary p is to n, r e m ove p is to n s to pper th ro ugh
s e co ndary ta nk b oss h ole in th e c ylin der b ody.
6 . Rem ove s n ap r in g w it h p ush in g p rim ary p is to n.
C AUTIO N:
B e c are fu l n ot t o p op o u t p is to n .
7 . Hold in g r o d o f p rim ary p is to n, r e m ove p rim ary p is to n a sse m bly ,
p la te a nd g uid e a sse m bly b y p ull in g s tr a ig ht to p re ve nt p is to n
c u p fr o m b ein g c a ught b y th e in ner w all o f c ylin der.
8 . Rem ove p la te a nd g uid e a sse m bly fr o m p rim ary p is to n.
C AUTIO N:
B e c are fu l n ot t o d am ag e r o d f r o m t h e in ner w all o f p la te . W
FIA 051 5E W
FIA 051 6E B
R A056 1D W
FIA 051 7E

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5. Be careful not to damage rod of primary piston with the cloth.
Then insert snap ring to cylinder body while pushing primary pis-
ton.
CAUTION:
Make sure that snap ring is securely engaged in cylinder
body inner diameter groove.
6. Apply brake fluid to a grommet, and press it into reservoir tank to install.
7. Install reservoir tank to cylinder body. CAUTION:
Pay attention to the orientatio n of reservoir tank. Make sure
reservoir tank is fully seated on master cylinder.
8. Secure flange of cylinder body in vise as shown. CAUTION:
• Use copper plate or cloth to cover flange for securing in
the vise.
• When securing master cylinder assembly in a vise, be sure not to over-tighten.
• Be sure to secure the flange part with the brake tube
installation side of cylinder body facing up (chamfered pin
insert hole of cylinder body facing up).
9. Using a pin punch [commercial service tool: diameter approx. 4 mm (0.16 in)], insert the reservoir tank pin into the pin hole. WFIA0515E

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3. Hang cylinder body with a wire, and remove pad return spring,
pads, shims and pad retainers from torque member.
CAUTION:
When removing pad retainer from torque member, lift pad
retainer in the direction shown by arrow, so as not to
deform it.
Installation 1. Apply PBC (Poly Butyl Cuprysil) grease or silicone- based grease to the shims. Install shims to pads.
CAUTION:
Securely install shims according to mounting direction of pads.
2. Install pad retainers, pad return spring, shims and pads to the torque member. CAUTION:
• When installing pad retainer, at tach it firmly so that it is
not lifted up from torque member, as shown.
3. Install cylinder body to torque member. CAUTION:
Check the brake fluid level in the reservoir tank for fluid level because brake fluid returns to mas-
ter cylinder reservoir tank when pressing piston in.
NOTE:
Use a disc brake piston tool (commercial se rvice tool) to easily press to piston in.
4. Install lower sliding pin bolt (lower side), and tighten it to the specified torque. Refer to BR-25, " Compo-
nent " .
5. Check brakes for drag.
6. Install front wheel and tire. Refer to WT-7, " Rotation " .
CLZ25VF
Removal 1. Remove the front wheel and tire using power tool.
2. Remove sliding pin bolt (lower side).
3. Hang cylinder body with a wire, and remove pads, shims and pad retainers from torque member.
CAUTION:
When removing pad retainer from torque member, lift pad
retainer in the direction shown by arrow, so as not to
deform it.
Installation SBR556E

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

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
WFIA0525E
SFIA2277E

" Removal and Installation of Brake Pad " .
6. Install cylinder body to torque member.
7. Tighten sliding pin bolts to specified torque. Refer to BR-25, " Component " .
8. Install the caliper assembly. Refer to BR-28, " Removal and Installation of Brake Caliper Assembly " .
Brake Burnishing Procedure INFOID:0000000004305914
Burnish the new braking surfaces according to following procedure after refinishing or replacing disc rotors,
pads, or if a soft pedal occurs at very low mileage.
CAUTION:
• Be careful of vehicle speed because brake does not operate easily until pad and disc rotor are
securely fitted.
• Only perform this procedure under safe road and traffic conditions. Use extreme caution.
1. Drive vehicle on straight, flat road.
2. Depress brake pedal with the power to stop vehicl e within 3 to 5 seconds until the vehicle stops.
3. Drive without depressing brake pedal for a few minutes to cool brake.
4. Repeat steps 1 to 3 until pad and disc rotor are securely fitted.

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SELF-DIAGNOSIS
Description If an error is detected in the system, the ABS warning lamp will turn on. In this case, perform self-diagnosis as
follows:
Operation Procedure 1. Turn ignition switch OFF.
2. Connect CONSULT-III to the data link connector.
3. Turn ignition switch ON.
4. Start engine and drive at approximately 30 km/h (19 MPH) or more for approximately 1 minute.
5. After stopping the vehicle, with the engine running, t ouch “ABS”, “SELF-DIAG RESULTS” in order on the
CONSULT-III screen.
6. The self-diagnostic results are displayed. (If nece ssary, the self-diagnostic results can be printed out by
touching “PRINT”.)
• When “NO DTC IS DETECTED” is displayed, check the ABS warning lamp.
7. Conduct the appropriate inspection from the display item list, and repair or replace the malfunctioning
component.
8. Start engine and drive at approximately 30 km/h (19 MPH) or more for approximately 1 minute.
CAUTION:
• When a wheel sensor “short-circuit” is detected, if the vehicle is not driven at 30 km/h (19 MPH)
for at least 1 minute, the ABS warn ing lamp will not turn off even if the malfunction is repaired.
9. Turn ignition switch OFF to prepare for erasing the memory.
10. Start the engine and touch “ABS”, “SELF-DIAG RESU LTS”, “ERASE” in order on the CONSULT-III screen
to erase the error memory.
If “ABS” is not indicated, go to GI-36, " CONSULT-III Data Link Connector (DLC) Circuit " .
CAUTION:
If the error memory is not erased, re -conduct the operation from step 5.
11. For the final inspection, drive at approximately 30 km/h (19 MPH) or more for approximately 1 minute and
confirm that the ABS warning lamp is off.
Display Item List FUNCTION TEST Conducted by CONSULT-III in
stead of a technician to determine whether each sy stem is "OK" or "NG".
ECU PART NUMBER ABS actuator and electric unit (control unit) part number can be read.
ABS diagnostic mode Description