2001 NISSAN ALMERA wiring

HBR137
DESCRIPTIONABS
Wiring Diagram Ð ABS Ð/Hatchback (Cont'd)
BR-61

HBR138
DESCRIPTIONABS
Wiring Diagram Ð ABS Ð/Hatchback (Cont'd)
BR-62

SEF233G
SEF234G
How to Perform Trouble Diagnoses for Quick
and Accurate Repair
NJBR0094INTRODUCTIONNJBR0094S01The ABS system has an electronic control unit to control major
functions. The control unit accepts input signals from sensors and
instantly drives actuator. It is essential that both kinds of signals are
proper and stable. It is also important to check for conventional
problems: such as air leaks in the booster or lines, lack of brake
fluid, or other problems with the brake system.
It is much more difficult to diagnose a problem that occurs intermit-
tently rather than continuously. Most intermittent problems are
caused by poor electric connections or faulty wiring. In this case,
careful checking of suspicious circuits may help prevent the
replacement of good parts.
A visual check only may not find the cause of the problems, so a
road test should be performed.
Before undertaking actual checks, take just a few minutes to talk
with a customer who approaches with a ABS complaint. The cus-
tomer is a very good source of information on such problems;
especially intermittent ones. Through the talks with the customer,
find out what symptoms are present and under what conditions
they occur.
Start your diagnosis by looking for ªconventionalº problems first.
This is one of the best ways to troubleshoot brake problems on an
ABS controlled vehicle. Also check related Service Bulletins for
information.
TROUBLE DIAGNOSIS Ð INTRODUCTIONABS
How to Perform Trouble Diagnoses for Quick and Accurate Repair
BR-71

5. Pedal Vibration and Noise=NJBR0108
1 INSPECTION START
Pedal vibration and noise inspection
SAT797A
©GO TO 2.
2 CHECK SYMPTOM
1. Apply brake.
2. Start engine.
Does the symptom appear only when engine is started?
Ye s©Carry out self-diagnosis. Refer to BR-63, BR-65.
No©GO TO 3.
3 RECHECK SYMPTOM
Does the symptom appear when electrical equipment switches (such as headlamp) are operated?
Ye s©GO TO 4.
No©Go to ª3. CHECK WARNING LAMP INDICATIONº in ª2. Unexpected Pedal Actionº,
BR-89.
4 CHECK WHEEL SENSOR
Check wheel sensor shield ground. For location of shield ground, refer to wiring diagram and ªHARNESS LAYOUTº in EL
section.
Is wheel sensor shield grounded properly?
Ye s©Check ABS actuator and electric unit pin terminals for damage or the connection of ABS
actuator and electric unit harness connector. Reconnect ABS actuator and electric unit
harness connector. Then retest.
No©Repair.
NOTE:
ABS may operate and cause vibration under any of the following
conditions.
+Applying brake gradually when shifting or operating clutch.
+Low friction (slippery) road.
+High speed cornering.
+Driving over bumps and pot holes.
+Engine speed is over 5,000 rpm with vehicle stopped.
TROUBLE DIAGNOSES FOR SYMPTOMSABS
5. Pedal Vibration and Noise
BR-92

Service NoticeNJBT0001+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 oil
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) ªAIR
BAGº and ªSEAT BELT PRE-TENSIONERº
NJBT0002The Supplemental Restraint System such as ªAIR BAGº and ªSEAT BELT PRE-TENSIONERº used along with
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of
collision. The SRS system composition which is available to NISSAN MODEL N16 is as follows (The compo-
sition varies according to the destination and optional equipment.):
+For a frontal collision
The Supplemental Restraint System consists of driver air bag module (located in the center of the steer-
ing wheel), front passenger air bag module (located on the instrument panel on passenger side), front seat
belt pre-tensioners, a diagnosis sensor unit, warning lamp, wiring harness and spiral cable.
+For a side collision
The Supplemental Restraint System consists of front side air bag module (located in the outer side of front
seat), side air bag (satellite) sensor, diagnosis sensor unit (one of components of air bags for a frontal
collision), wiring harness, warning lamp (one of components of air bags for a frontal collision).
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 inflation, all maintenance should be per-
formed 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. SRS wiring harnesses can be identified by yellow harness connector.
PRECAUTIONS
Service Notice
BT-3

Removal and Installation (Sedan)NJBT0005+When removing or installing trunk lid, place a cloth or other padding on trunk lid. 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.
+Trunk lid adjustment: Adjust at hinge-trunk lid portion for proper trunk lid fit.
+Trunk lid lock system adjustment: Adjust striker so that it is in the center of the lock. After adjustment, check
trunk lid lock operation.
+After installation, make sure that trunk lid and fuel filler lid open smoothly.
HFor Wiring Diagram, refer to EL-297, ªTRUNK LID OPENERº.
REAR BUMPER ASSEMBLYNJBT0005S011. Remove clips and screws securing left and right chipping protectors.
2. Remove screws securing left and right rear fenders to bumper fascia.
3. Remove bolts securing bumper fascia assembly.
4. Remove clips securing bumper fascia assembly.
5. Open the bumper fascia side outward to disengage from side clips.
6. Extract bumper fascia assembly.
7. Remove bolts securing bumper stays, then remove the bumper stays.
BODY REAR END AND OPENER
Removal and Installation (Sedan)
BT-10

Removal and Installation (Hatchback)NJBT0034+When removing or installing back door, place a cloth or other padding on back door. 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.
+Back door adjustment: Adjust at hinge-back door portion for proper back door fit.
+Back door lock system adjustment: Adjust striker so that it is in the center of the lock. After adjustment,
check back door lock operation.
+After installation, make sure that back door and fuel filler lid open smoothly.
HFor Wiring Diagram, refer to EL-297, ªTRUNK LID OPENERº.
REAR BUMPER ASSEMBLYNJBT0034S011. Remove clips securing left and right chipping protectors.
2. Remove screws securing left and right rear fenders to bumper fascia.
3. Remove bolts securing bumper facia assembly.
4. Remove clips securing bumper fascia assembly.
5. Remove clips securing bumper fascia assembly.
6. Open the bumper fascia side outward to disengage from side clips.
7. Extract bumper fascia assembly.
8. Remove bolts securing bumper stays, then remove the bumper stays.
NBT184
BODY REAR END AND OPENER
Removal and Installation (Hatchback)
BT-13

Removal and InstallationNJBT0018+When removing or installing the seat trim, carefully handle it to keep dirt out and avoid damage.
HFor Wiring Diagram, refer to EL-288, ªWiring Diagram Ð HEATED SEAT к.
CAUTION:
+Before removing the front seat, turn the ignition switch off, disconnect both battery cables and wait
at least 3 minutes.
+Do not drop, tilt, or bump the side air bag module installed in the seat. Always handle it with care.
+Disconnect the side air bag harness connector and heated seat harness connector from under the
seat before removing the seat.
+Disconnect the side air bag harness connector before removing the seat back. Refer to RS-36,
ªFront Side Air Bag Moduleº for details.
FRONT SEAT
Removal and Installation
BT-56