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![NISSAN X-TRAIL 2003 Service Repair Manual TROUBLE DIAGNOSIS
BRC-43
[ABS]
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Symptom 2: Unexpected Pedal ReactionEFS004HK
1. CHECK BRAKE PEDAL STROKE
Check brake pedal stroke. Refer to BR-6, "
On-Vehicle Inspection an NISSAN X-TRAIL 2003 Service Repair Manual TROUBLE DIAGNOSIS
BRC-43
[ABS]
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Symptom 2: Unexpected Pedal ReactionEFS004HK
1. CHECK BRAKE PEDAL STROKE
Check brake pedal stroke. Refer to BR-6, "
On-Vehicle Inspection an](/manual-img/5/57404/w960_57404-2856.png)
TROUBLE DIAGNOSIS
BRC-43
[ABS]
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Symptom 2: Unexpected Pedal ReactionEFS004HK
1. CHECK BRAKE PEDAL STROKE
Check brake pedal stroke. Refer to BR-6, "
On-Vehicle Inspection and Adjustment" .
Is the stroke too large?
YES >>Bleed air from the brake piping. Refer to BR-9, "Bleeding Brake System" .
Check brake pedal, brake booster, and master cylinder for mount play, looseness, brake sys-
tem fluid leakage, etc. Repair if necessary. Refer to Brake pedal: BR-7, "
Components" , brake
booster and master cylinder: BR-23, "
Removal and Installation" .
NO >> GO TO 2.
2. PERFORMANCE CHECK
Disconnect ABS actuator and electric unit (control unit) connector to deactivate ABS. Check if braking force is
normal in this condition. Connect connector after inspection.
OK or NG
OK >> GO TO 3. Wheel Sensor Inspection in BRC-42, "Symptom 1: ABS Works Frequently" .
NG >> Check brake system.
Symptom 3: Longer Stopping DistanceEFS004HL
CAUTION:
The stopping distance on slippery road surfaces might be longer with the ABS operating than when
the ABS is not operating.
1. PERFORMANCE CHECK
Turn ignition switch OFF. Disconnect ABS actuator and electric unit (control unit) connector to deactivate ABS.
In this condition, check stopping distance. After inspection, connect connector.
OK or NG
OK >> GO TO BRC-42, "Symptom 1: ABS Works Frequently" .
NG >>
Bleed air from the brake piping. Refer to BR-9, "Bleeding Brake System" .
Check brake system.
Page 2858 of 4179
![NISSAN X-TRAIL 2003 Service Repair Manual BRC-44
[ABS]
TROUBLE DIAGNOSIS
Symptom 4: ABS Does Not WorkEFS004HM
CAUTION:
ABS does not operate when speed is 10 km/h or lower.
1. CHECK ABS WARNING LAMP DISPLAY
Make sure that the warning lamp tu NISSAN X-TRAIL 2003 Service Repair Manual BRC-44
[ABS]
TROUBLE DIAGNOSIS
Symptom 4: ABS Does Not WorkEFS004HM
CAUTION:
ABS does not operate when speed is 10 km/h or lower.
1. CHECK ABS WARNING LAMP DISPLAY
Make sure that the warning lamp tu](/manual-img/5/57404/w960_57404-2857.png)
BRC-44
[ABS]
TROUBLE DIAGNOSIS
Symptom 4: ABS Does Not WorkEFS004HM
CAUTION:
ABS does not operate when speed is 10 km/h or lower.
1. CHECK ABS WARNING LAMP DISPLAY
Make sure that the warning lamp turns off approximately 1 second after the key switch is turned on or when
driving.
OK or NG
OK >> GO TO 3. Check wheel sensor and sensor rotor in BRC-42, "Symptom 1: ABS Works Frequently"
.
NG >> Perform self-diagnosis. Refer to BRC-27, "
SELF-DIAGNOSIS" .
Symptom 5: Pedal Vibration and ABS Operation NoiseEFS004HN
CAUTION:
Under the following conditions, ABS is activated and vibration is felt when brake pedal is lightly
depressed (just place a foot on it). However, this is normal.
When shifting gears
When driving on slippery road
During cornering at high speed
When passing over bumps or grooves (Approx. 50 mm or more)
When pulling away just after starting engine (Approx. 10 km/h or more)
1. SYMPTOM CHECK 1
Check if pedal vibration or operation sounds occur when the engine is started.
OK or NG
OK >> GO TO 2.
NG >> Perform self-diagnosis. Refer to BRC-27, "
SELF-DIAGNOSIS" .
2. SYMPTOM CHECK 2
Check symptoms when electrical component (headlamps, etc.) Switches are operated.
Do symptoms occur?
YES >> Check if there is a radio, antenna, antenna lead wire, or wiring close to the control unit. If there is,
move it farther away.
NG >> GO TO 3. Check wheel sensor and sensor rotor in BRC-42, "
Symptom 1: ABS Works Frequently"
.
Page 2859 of 4179
![NISSAN X-TRAIL 2003 Service Repair Manual WHEEL SENSORS
BRC-45
[ABS]
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WHEEL SENSORSPFP:47910
Removal and InstallationEFS004GR
REMOVAL
Pay attention to the following when removing sensor.
CAUTION:
As much as possib NISSAN X-TRAIL 2003 Service Repair Manual WHEEL SENSORS
BRC-45
[ABS]
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WHEEL SENSORSPFP:47910
Removal and InstallationEFS004GR
REMOVAL
Pay attention to the following when removing sensor.
CAUTION:
As much as possib](/manual-img/5/57404/w960_57404-2858.png)
WHEEL SENSORS
BRC-45
[ABS]
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WHEEL SENSORSPFP:47910
Removal and InstallationEFS004GR
REMOVAL
Pay attention to the following when removing sensor.
CAUTION:
As much as possible, avoid rotating sensor when removing it. Pull sensors out without pulling on
sensor harness.
Take care to avoid damaging sensor edges or rotor teeth. Remove wheel sensor first before
removing front or rear wheel hub. This is to avoid damage to sensor wiring and loss of sensor
function.
INSTALLATION
Pay attention to the following when installing sensor. Tighten installation bolts to specified torques.
When installing, check that there is no foreign material such as iron chips on pick-up and mounting hole of
the sensor. Check that no foreign material has been caught in the sensor rotor. Remove any foreign mate-
rial and clean the mount.
When installing front sensor, be sure to press rubber grommets in until they lock at the three locations
shown in the figure (2 at strut and 1 at body panel). When installed, harness must not be twisted.
SFIA1100E
Page 2860 of 4179
BRC-46
[ABS]
G SENSOR
G SENSORPFP:47930
Removal and InstallationEFS004GY
CAUTION:
Be careful not to drop or bump G -sensor because it is sensitive to impact.
1. Remove center console. Refer to IP-10, "
INSTRUMENT PANEL
ASSEMBLY" .
2. Disconnect G -sensor connector.
3. Remove mounting nuts and remove G -sensor.
Install in the reverse order of removal observing the precautions
above.
SFIA0065E
Page 2861 of 4179
![NISSAN X-TRAIL 2003 Service Repair Manual SENSOR ROTOR
BRC-47
[ABS]
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BRC
SENSOR ROTORPFP:47970
Removal and InstallationEFS004GZ
REMOVAL
Front
1. Remove drive shaft. Refer to FA X - 11 , "Removal and Installation" in NISSAN X-TRAIL 2003 Service Repair Manual SENSOR ROTOR
BRC-47
[ABS]
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SENSOR ROTORPFP:47970
Removal and InstallationEFS004GZ
REMOVAL
Front
1. Remove drive shaft. Refer to FA X - 11 , "Removal and Installation" in](/manual-img/5/57404/w960_57404-2860.png)
SENSOR ROTOR
BRC-47
[ABS]
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SENSOR ROTORPFP:47970
Removal and InstallationEFS004GZ
REMOVAL
Front
1. Remove drive shaft. Refer to FA X - 11 , "Removal and Installation" in “FAX Front axle/Drive shaft”.
2. Remove sensor rotor from drive shaft. Refer to “FAX Front axle/Drive shaft ” FAX-13, "
Disassembly and
Assembly" .
Rear
1. Remove drive shaft. Refer to RAX-10, "Removal and Installation" in “RAX Rear axle/Drive shaft”.
2. Remove sensor rotor from drive shaft. Refer to “RAX Rear axle/Drive shaft” RAX-11, "
Disassembly and
Assembly" .
INSTALLATION
Front
1. Install sensor rotor to drive shaft. Refer to “FAX Front axle/Drive shaft” FAX-13, "Disassembly and
Assembly"
2. Connect drive shaft. Refer toFA X - 11 , "Removal and Installation" in “FAX Front axle/Drive shaft”.
Rear
1. Install sensor rotor to drive shaft. Refer to RAX Rear axle/Drive shaft” RAX-11, "Disassembly and
Assembly"
2. Connect drive shaft. Refer to RAX-10, "Removal and Installation" in “RAX Rear axle/Drive shaft”.
Page 2862 of 4179
BRC-48
[ABS]
ABS ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)
ABS ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)PFP:47660
Removal and InstallationEFS004GT
The above figure shows RH model. LH model figure is the mirror image.
Pay attention to the following when removing actuator.
CAUTION:
Before servicing, disconnect battery terminals.
To remove brake tube, use flare nut wrench to prevent flare nuts and brake tube from being dam-
aged. To install, use flare nut torque wrench (special service tool).
Do not apply excessive impact to actuator, such as dropping it.
Do not remove and install ABS actuator and electric unit (control unit) by holding harness.
After work is completed, bleed air from brake piping. Refer to BR-9, "Bleeding Brake System" .
SFIA1813E
Page 2863 of 4179
![NISSAN X-TRAIL 2003 Service Repair Manual PRECAUTIONS
BRC-49
[ESP/TCS/ABS]
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[ESP/TCS/ABS]PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EFS NISSAN X-TRAIL 2003 Service Repair Manual PRECAUTIONS
BRC-49
[ESP/TCS/ABS]
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[ESP/TCS/ABS]PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EFS](/manual-img/5/57404/w960_57404-2862.png)
PRECAUTIONS
BRC-49
[ESP/TCS/ABS]
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[ESP/TCS/ABS]PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EFS004H7
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 SystemEFS0019O
Recommended fluid is brake fluid “DOT 3” or “DOT 4”.
Never reuse drained brake fluid.
Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is splashed
on painted areas, wash it away with water immediately.
Never use mineral oils such as gasoline or kerosene. They will ruin rubber parts of hydraulic system.
Use a flare nut wrench when removing and installing brake
tubes.
When installing brake piping, be sure to check torque.
Before working, turn the ignition switch OFF and disconnect the
connectors for the ESP actuator and control unit or the battery
negative terminal.
Burnish the brake pad contact surfaces after refinishing or
replacing drums or rotors, after replacing pads or linings, or if a
soft pedal occurs at very low mileage. Refer to BR-31, "
BRAKE
BURNISHING PROCEDURE" .
WARNING:
Clean brakes with a vacuum dust collector to minimize risk of health hazard from powder caused
by friction.
Precautions for Brake ControlEFS0019P
During the ESP/TCS/ABS operation, the brake pedal vibrates lightly and its mechanical noise may be
heard. This is a normal condition.
Just after starting the vehicle after ignition switch ON, the brake pedal may vibrate or the motor operating
noise may be heard from the engine compartment. This is a normal status of the operation check.
The stopping distance may be longer than that of vehicles without ABS when the vehicle drives on rough,
gravel, or snowy (fresh deep snow) road.
If a malfunction is indicated by the ABS warning lamp, or other warning lamps, collect the necessary infor-
mation from the customer (what symptoms are present under what conditions) and find out the possible
causes before starting the service. Besides the electrical system inspection, check the booster operation,
brake fluid level, and oil leaks.
If the tyre size and type are used in a improper combination, or the brake pads are not NISSAN genuine
parts, the stopping distance or steering stability may deteriorate.
If there is a radio, antenna, or antenna lead-in wire (including wiring) near the control unit, the ESP/TCS/
ABS function may have a malfunction or error.
If aftermarket parts (e.g. Car stereo equipment, CD player) have been installed, check harnesses for
pinches, open, and improper wiring.
SBR820BA
Page 2864 of 4179
BRC-50
[ESP/TCS/ABS]
PREPARATION
PREPARATIONPFP:00002
Special Service ToolsEFS00219
Tool number
Tool nameDescription
GG94310000
Flare nut torque wrench
a:10mm (0.39 in) / 12mm (0.47 in)Removing and installing each brake
piping
NT406