Removal
WARNING:
Clean brake pads with a vacuum dust collector to minimize the
hazard of airborne particles or other materials.
CAUTION:
Suspend caliper assembly with wire so as not to stretch brake
hose.
Remove torque member ®xing bolts and connecting bolt.
It is not necessary to remove connecting bolt except for dis-
assembly or replacement of caliper assembly. In this case,
suspend caliper assembly with wire so as not to stretch brake
hose.
Disassembly
WARNING:
Do not place your ®ngers in front of piston.
CAUTION:
Do not scratch or score cylinder wall.
1. Push out piston with dust seal with compressed air.
2. Remove piston seal with a suitable tool.
Inspection Ð Caliper
CYLINDER BODY
+Check inside surface of cylinder for score, rust, wear, damage
or presence of foreign objects. If any of the above conditions
are observed, replace cylinder body.
+ Minor damage from rust or foreign objects may be eliminated
by polishing surface with a ®ne emery paper. Replace cylinder
body if necessary.
CAUTION:
Use brake ¯uid to clean. Never use mineral oil.
PISTON
Check piston for score, rust, wear, damage or presence of foreign
objects. Replace if any of the above conditions are observed.
CAUTION:
Piston sliding surface is plated. Do not polish with emery
paper even if rust or foreign objects are stuck to sliding sur-
face.
SLIDE PIN, PIN BOLT AND PIN BOOT
Check for wear, cracks, rust or other damage. Replace if any of the
above conditions are observed.
SBR183E
SBR772
REAR DISC BRAKE
BR-27
System Components
System Description
WHEEL SENSOR
The sensor unit consists of a gear-shaped sensor rotor and a sen-
sor element. The element contains a bar magnet around which a
coil is wound. The sensor is installed on the back of the brake rotor.
As the wheel rotates, the sensor generates a sine-wave pattern.
The frequency and voltage increase(s) as the rotating speed
increases.
CONTROL UNIT (built in ABS actuator and electric unit)
The control unit computes the wheel rotating speed by the signal
current sent from the sensor. Then it supplies a DC current to the
actuator solenoid valve. It also controls ON-OFF operation of the
valve relay and motor relay. If any electrical malfunction should be
detected in the system, the control unit causes the warning lamp
to light up. In this condition, the ABS will be deactivated by the
control unit, and the vehicle's brake system reverts to normal
operation. (For control unit layout, refer to ABS ACTUATOR AND
ELECTRIC UNIT, BR-34.)
SBR185E
SBR186E
ANTI-LOCK BRAKE SYSTEM
BR-34
MALFUNCTION CODE/SYMPTOM CHART
Code No.
(No. of warning lamp ¯ashes) Malfunctioning part Diagnostic procedure
45 Actuator front left outlet solenoid valve 2
46 Actuator front left inlet solenoid valve 2
41 Actuator front right outlet solenoid valve 2
42 Actuator front right inlet solenoid valve 2
55 Actuator rear outlet solenoid valve 2
56 Actuator rear inlet solenoid valve 2
25 .1 Front left sensor (open-circuit) 1
26 .1 Front left sensor (short-circuit) 1
21 .1 Front right sensor (open-circuit) 1
22 .1 Front right sensor (short-circuit) 1
31 .1 Rear right sensor (open-circuit) 1
32 .1 Rear right sensor (short-circuit) 1
35 .1 Rear left sensor (open-circuit) 1
36 .1 Rear left sensor (short-circuit) 1
18 .1 Sensor rotor 1
17 G sensor and circuit 5
61 .3 Actuator motor or motor relay 3
63 Solenoid valve relay 2
57 .2 Power supply (Low voltage) 4
71 Control unit 6
Warning lamp stays on when igni-
tion switch is turned on Control unit power supply circuit
Warning lamp bulb circuit
Control unit or control unit connector
Solenoid valve relay stuck
Power supply for solenoid valve relay coil
13
Warning lamp does not come on
when ignition switch is turned on Fuse, warning lamp bulb or warning lamp circuit
Control unit
12
Pedal vibration and noise Ð 11
Long stopping distance Ð 9
Unexpected pedal action Ð 8
ABS does not work Ð 10
ABS works frequently Ð 7
. 1: If one or more wheels spin on a rough or slippery road for 40 seconds or more, the ABS warning lamp will illuminate. This does
not indicate a malfunction. Only in the case of the short-circuit (Code Nos. 26, 22, 32 and 36), after repair the ABS warning lamp
also illuminates when the ignition switch is turned ``ON''. In this case, drive the vehicle at speeds greater than 30 km/h (19 MPH)
for approximately 1 minute as speci®ed in ``SELF-DIAGNOSIS PROCEDURE'', BR-47. Check to ensure that the ABS warning
lamp goes out while the vehicle is being driven.
. 2: The trouble code ``57'', which refers to a low power supply voltage, does not indicate that the ABS control unit is malfunctioning.
Do not replace the ABS control unit with a new one.
. 3: The trouble code ``61'' can sometimes appear when the ABS motor is not properly grounded. If it appears, be sure to check the
condition of the ABS motor ground circuit connection.
TROUBLE DIAGNOSES
Self-diagnosis (Cont'd)
BR-49
Service Notice
+When removing or installing various parts, place a cloth or padding onto the vehicle body to prevent
scratches.
+Handle trim, molding, instruments, grille, etc. carefully during removing or installing. Be careful not to soil
or damage them.
+Apply sealing compound where necessary when installing parts.
+When applying sealing compound, be careful that the sealing compound does not protrude from parts.
+When replacing any metal parts (for example body outer panel, members, etc.), be sure to take rust pre-
vention measures.
Supplemental Restraint System (SRS) ``AIR
BAG'' and ``SEAT BELT PRE-TENSIONER''
The Supplemental Restraint System such as ``AIR BAG'' and ``SEAT BELT PRE-TENSIONER'' used along with
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger in a frontal collision.
The SRS system composition which is available to NISSAN MODEL Y61 is as follows (The composition var-
ies according to the destination.):
Driver air bag module (located in the center of the steering wheel), front passenger air bag module (located
on the instrument panel on passenger side), seat belt pre-tensioner, a diagnosis sensor unit, warning lamp,
wiring harness and spiral cable.
Information necessary to service the system safely is included in theRS sectionof 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 in¯ation, all maintenance must be performed
by an authorized NISSAN 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 RS section.
+Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. Spiral cable and wiring harnesses covered with yellow insulation either just before
the harness connectors or for the complete harness are related to the SRS.
PRECAUTIONS
BT-1
Body Front End
+When removing or installing hood, place a cloth or other padding on front fender panel and cowl top. This
prevents vehicle body from being scratched.
+Bumper fascia is made of plastic. Do not use excessive force and be sure to keep oil away from it.
+Hood adjustment: Adjust at hinge portion.
+Hood lock adjustment: After adjusting, check hood lock control operation. Apply a coat of grease to hood
locks engaging mechanism.
+Hood opener: Do not attempt to bend cable forcibly. Doing so increases effort required to unlock hood.
REMOVAL Ð Front bumper assembly
V1Remove front guard bar. Refer to ``EXTERIOR'' for details, BT-26.
V2Remove left and right headlamp wipers (on models with headlamp wipers).
V3Remove clips securing front grille and remove the front grille.
V4Remove screws and bolts securing left and right front bumper side bracket.
V5Remove bolts securing bumper lower to engine under cover.
V6Remove bolts securing left and right front bumper stay upper (without winch).
V7Remove bolts securing left and right front bumper stay side.
V8Extract bumper assembly.
SBT518
BODY END
BT-4
Body Rear End and Opener
+Bumper fascia is made of plastic. Do not use excessive force and be sure to keep oil away from it.
+Back door lock system adjustment: Adjust lock & striker so that they are in the center.
After adjustment, check back door lock operation.
+Back door hatch lock system adjustment: Adjust lock & striker so that they are in the center.
After adjustment, check back door hatch lock operation.
+Opener cable: Do not attempt to bend cable using excessive force.
+After installation, make sure that back door and fuel ®ller lid open smoothly.
WARNING:
+Be careful not to scratch back door stay and/or back door hatch stay when installing back door
and/or back door hatch. A scratched stay may cause gas leakage.
+The contents of the back door stay and back door hatch stay are under pressure. Do not take apart,
puncture, apply heat or allow ®re near them.
REMOVAL Ð Rear bumper assembly
V1Remove screws securing left and right mudguard.
V2Remove bolts securing left and right rear side bumper to rear fender.
V3Remove screws and clips securing left and right rear side bumper to rear bumper side reinforcement.
V4Remove bolts securing left and right rear side bumper to rear center bumper.
V5Remove bolts securing left and right rear bumper side reinforcement to rear center bumper.
V6Remove bolts securing left and right rear bumper side reinforcement to frame assembly.
V7Remove bolts securing rear hook assembly.
V8Extract rear bumper assembly.
V9Remove bolts securing left and right rear bumper side reinforcement to rear center bumper.
SBT520
BODY END
BT-6
Precautions
+Recommended ¯uid is brake ¯uid ``DOT 3''.
+Do not reuse drained brake ¯uid.
+Be careful not to splash brake ¯uid on painted areas.
+When removing and installing clutch piping, use Tool.
+Use new brake ¯uid to clean or wash all parts of master
cylinder, operating cylinder and clutch damper.
+Never use mineral oils such as gasoline or kerosene. It will
ruin the rubber parts of the hydraulic system.
WARNING:
After cleaning clutch disc, wipe it with a dust collector. Do not
use compressed air.
Special Service Tools
Tool number
Tool nameDescription
ST20050010
Base plate
NT403
Inspecting diaphragm spring of clutch cover
a: 357 mm (14.06 in) dia.
b: 43 mm (1.69 in)
ST20050100
Distance piece
NT402
Inspecting diaphragm spring of clutch cover
a: 25 mm (0.98 in) dia.
b: 7.8 mm (0.307 in)
GG94310000
Flare nut torque wrench
NT406
Removing and installing each clutch piping
a: 10 mm (0.39 in)
: 16.2 Nzm (1.65 kg-m, 11.9 ft-lb)
ST20630000
Clutch aligning bar
NT405
Installing clutch cover and clutch disc
a: 15.8 mm (0.622 in) dia.
b: 22.9 mm (0.902 in) dia.
c: 45 mm (1.77 in)
ST20050240
Diaphragm spring
adjusting wrench
NT404
Adjusting unevenness of clutch cover dia-
phragm spring
a: 150 mm (5.91 in)
b: 25 mm (0.98 in)
SBR820BA
PRECAUTIONS AND PREPARATION
CL-1
NVH Troubleshooting Chart
Use the chart below to help you ®nd the cause of the symptom. The numbers indicate the order of inspection.
If necessary, repair or replace these parts.
Reference page (CL- )5
6
7
8
Refer to EM section.
11
13
13
13
13
13
13
13
13
14
14
14
14
SUSPECTED PARTS
(Possible cause)
CLUTCH PEDAL (Free play out of adjustment)
CLUTCH LINE (Air in line)
MASTER CYLINDER PISTON CUP (Damaged)
OPERATING CYLINDER PISTON CUP (Damaged)
ENGINE MOUNTING (Loose)
RELEASE BEARING (Worn, dirty or damaged)
CLUTCH DISC (Out of true)
CLUTCH DISC (Runout is excessive)
CLUTCH DISC (Lining broken)
CLUTCH DISC (Dirty or burned)
CLUTCH DISC (Oily)
CLUTCH DISC (Worn out)
CLUTCH DISC (Hardened)
CLUTCH DISC (Lack of spline grease)
DIAPHRAGM SPRING (Damaged)
DIAPHRAGM SPRING (Out of tip alignment)
PRESSURE PLATE (Distortion)
FLYWHEEL (Distortion)
SymptomClutch grabs/chatters 1 2 2 2 2 2
Clutch pedal spongy 1 2 2
Clutch noisy 1
Clutch slips 1 2 2 3 4 5
Clutch does not dis-
engage1234 55555 5667
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
CL-3