NISSAN X-TRAIL 2001 Service Repair Manual

TROUBLE DIAGNOSIS
BRC-47
[4WD/ABS]
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B
BRC
Inspection Of Drive Mode Change-over Switch PathEFS001C0
1.INSPECTION OF DRIVE MODE CHANGE-OVER SWITCH
Inspection of drive mode change-over switch
Is inspection result OK?
YES >> GO TO 2.
NO >> Poor drive mode change-over switch
2.INPUT SIGNAL CHECK
Select control module input item on monitoring item selection. While monitoring drive mode change-over
switch items, press 2WD mode switch. Check the display changes from ##to 2WD. Check the display for
AUTO and LOCK just the same. (## indicates when mode SW is not pressed.)
Is inspection result OK?
YES >>●4WD/ABS control unit input/output signal inspection
●Recheck 4WD/ABS control unit connector terminals and connection.
NO >> GO TO 3.
3.INSPECTION OF DRIVE MODE CHANGE-OVER SWITCH POWER SUPPLY
●Disconnect drive mode change-over switch connector.
●Turn ignition switch ON.
●Measure voltage between drive mode change-over switch connector and body ground. Check the voltage
is 4V or more.
Is inspection result OK?
YES >> GO TO 4.
NO >> Harness malfunction or connector malfunction between ignition switch and drive mode change-
over switch connector or connector malfunction.
4.HARNESS CONTINUITY INSPECTION
●Turn OFF ignition switch.
●Confirm continuity between following terminals.
(4WD/ABS control unit connector E122 terminal No.26 (L) - Drive mode switch connector M39 terminal
No.2 (L)) (4WD/ABS control unit connector E122 terminal No. 27 (BR) - Drive mode switch connector M39
terminal No.1 (BR)).
Is inspection result OK?
YES >> GO TO 5.
NO >> Malfunctioning harness or connector.
5.HARNESS CONTINUITY INSPECTION
Drive the vehicle for a while and the perform self-diagnosis.
Is inspection result OK?
YES >> End
NO >>
●4WD/ABS control unit input/output signal inspection
●Recheck 4WD/ABS control unit connector terminals and connection.

BRC-48
[4WD/ABS]
4WD/ABS CONTROL UNIT
4WD/ABS CONTROL UNIT
PFP:47660
Removal and InstallationEFS002F7
REMOVAL
1. Remove lower instrument panel and glove box. Refer to IP-3, "INSTRUMENT PANEL ASSEMBLY" .
2. Remove 4WD/ABS control unit.
INSTALLATION
Install in the reverse order of removal.
SFIA1038E
SFIA1039E

WHEEL SENSORS
BRC-49
[4WD/ABS]
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BRC
WHEEL SENSORSPFP:47910
Removal and InstallationEFS001C1
CAUTION:
●Be careful not to damage sensor edge and rotor tooth. Before removing front or rear wheel hub,
remove wheel speed sensor to avoid sensor wiring damage. Otherwise, sensor may be deacti-
vated.
●When removing sensor, avoid rotating it as much as possible. Do not forcibly pull sensor harness.
●When installing, check sensor pick-up and mounting hole for foreign material such as iron chips.
Check no foreign material has been caught in sensor rotor. Remove any foreign material found.
Tighten mounting bolts and nuts to the specified torque.
SFIA1100E

BRC-50
[4WD/ABS]
G-SENSOR (4WD MODEL ONLY)
G-SENSOR (4WD MODEL ONLY)
PFP:47930
Removal and InstallationEFS001C2
CAUTION:
Be careful not to drop or bump G -sensor because it is sensitive to impact.
1. Remove center console and instrument. Refer to applicable sec-
tion in IP-3, "
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

SENSOR ROTOR
BRC-51
[4WD/ABS]
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BRC
SENSOR ROTORPFP:47970
Removal and InstallationEFS001C3
REMOVAL
Front
1. Remove drive shaft. Refer to FA X - 11 , "REMOVAL" in “FAX Front Axle/Drive Shaft”.
2. Remove sensor rotor from drive shaft. Refer to FAX-13, "
DISASSEMBLY" in “FAX Front axle/Drive shaft
”.
Rear
1. Remove drive shaft. Refer to RAX-9, "Removal" in “RAX Rear Axle/Drive Shaft”.
2. Remove sensor rotor from drive shaft. Refer to RAX-10, "
DISASSEMBLY" in “RAX Rear axle/Drive
shaft”.
INSTALLATION
Front
1. Install sensor rotor to drive shaft. Refer to FAX-15, "ASSEMBLY" in “FAX Front axle/Drive shaft”.
2. Connect drive shaft. Refer to FAX-12, "
INSTALLATION" in “FAX Front Axle/Drive Shaft”.
Rear
1. Install sensor rotor to drive shaft. Refer to RAX-12, "ASSEMBLY" in “RAX Rear axle/Drive shaft”.
2. Connect drive shaft. Refer to RAX-9, "
Installation" in “RAX Rear Axle/Drive Shaft”.

BRC-52
[4WD/ABS]
ACTUATOR
ACTUATOR
PFP:47600
Removal and InstallationEFS002F8
LHD models
SFIA0360E

ACTUATOR
BRC-53
[4WD/ABS]
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BRC
RHD models
REMOVAL
Be careful of the following.
CAUTION:
●Before servicing, disconnect battery terminals.
●To remove brake tube, use a flare nut wrench to prevent flare nuts and brake tube from being dam-
aged. To install, use a flare nut torque wrench and tighten to the specified torque.
INSTALLATION
Be careful of the following.
●Tighten mounting bolts and nuts to the specified torque.
●After the work, bleed the brakes. Refer to BR-10, "Bleeding Brake System" .
SFIA0462E

BRC-54
[ESP/TCS/ABS]
PRECAUTIONS
[ESP/TCS/ABS]PRECAUTIONSPFP:00001
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 flare nut wrench when removing and installing brake tubes.
●Always torque brake lines when installing.
●Before working, turn the ignition switch OFF and disconnect the
connectors for the ESP/TCS/ABS actuator and control unit or
the battery terminals.
●Burnish the brake 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-10, "
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 tire 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 the electrical har-
nesses for pinches, open, and improper wiring.
Precautions for CAN SystemEFS001CP
FOR INSPECTION
●Do not apply voltage of 7.0V or higher to the measurement terminals.
●Use the tester with its open terminal voltage being 7.0V or less.
●Before harness inspection, turn the ignition switch off, disconnect the negative battery terminal.
SBR820BA

PRECAUTIONS
BRC-55
[ESP/TCS/ABS]
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BRC
FOR HARNESS REPAIR
●Solder the repaired parts, and wrap with tape. [Frays of twisted
line must be within 110 mm (4.33 in)]
●Do not perform bypass wire connections for the repair parts.
(The spliced wire will become separated and the characteristics
of twisted line will be lost.)
PKIA0306E
PKIA0307E

BRC-56
[ESP/TCS/ABS]
PREPARATION
PREPARATION
PFP:00002
Special Service ToolEFS00219
Commercial Service ToolEFS0021A
Tool number
Tool nameDescription
GG9431 0000
Flare nut torque wrench
a:10mm (0.39 in)Removing and installing each brake
piping
NT406
To o l n a m eDescription
Brake fluid pressure gauge Measuring brake fluid pressure
S-NT151