2003 NISSAN X-TRAIL Electronic Repair Manual

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Page 833 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual NATS (NISSAN ANTI-THEFT SYSTEM)
BL-89
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3.CHECK INTERFACE CIRCUIT
1. Check continuity between IMMU terminal 2 and dongle unit ter-
minal 7.
2. Check continuity between IMMU ter

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NISSAN X-TRAIL 2003 Electronic Repair Manual BL-90
NATS (NISSAN ANTI-THEFT SYSTEM)

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NISSAN X-TRAIL 2003 Electronic Repair Manual BR-1
BRAKE SYSTEM
F BRAKES
CONTENTS
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SECTION
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BRAKE SYSTEM
PRECAUTIONS .......................................................... 3
Precautions for Models with SRS Air Bag and

BR-1
BRAKE SYSTEM
F BRAKES
CONTENTS
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SECTION
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BR
BRAKE SYSTEM
PRECAUTIONS .......................................................... 3
Precautions for Models with SRS Air Bag and Pre-
Tensioner Seat Belt .................................................. 3
Precautions for Brake System .................................. 3
PREPARATION ........................................................... 4
Special Service Tools ............................................... 4
NOISE, VIBRATION, AND HARSHNESS (NVH)
TROUBLESHOOTING ................................................ 5
NVH Troubleshooting Chart ..................................... 5
BRAKE PEDAL .......................................................... 6
On-Vehicle Inspection and Adjustment .................... 6
Components ............................................................. 7
Removal and Installation .......................................... 7
REMOVAL ............................................................. 7
INSPECTION AFTER REMOVAL ......................... 8
INSTALLATION ..................................................... 8
BRAKE FLUID ............................................................ 9
Checking Brake Fluid Level ..................................... 9
Checking Brake Line ................................................ 9
Changing Brake Fluid ............................................... 9
Brake Burnishing Procedure .................................. 10
Bleeding Brake System .......................................... 10
BRAKE PIPING AND HOSE .....................................11
Hydraulic Piping ......................................................11
Removal and Installation of Front Brake Piping and
Brake Hose .............................................................11
REMOVAL ............................................................11
INSTALLATION ....................................................11
Removal and Installation of Rear Brake Piping and
Brake Hose ............................................................ 12
REMOVAL ........................................................... 12
INSTALLATION ................................................... 12
Inspection ............................................................... 12
BRAKE MASTER CYLINDER .................................. 13
Components ........................................................... 13
Removal and Installation ........................................ 13
REMOVAL ........................................................... 13INSTALLATION ................................................... 13
Disassembly and Assembly .................................... 14
DISASSEMBLY ................................................... 14
INSPECTION AFTER REMOVAL ....................... 14
ASSEMBLY ......................................................... 15
BRAKE BOOSTER ................................................... 17
On-Vehicle Inspection and Service ......................... 17
FUNCTION INSPECTION ................................... 17
AIRTIGHTNESS INSPECTION ........................... 17
Removal and Installation ........................................ 17
REMOVAL ........................................................... 17
INSPECTION AFTER REMOVAL ....................... 17
INSTALLATION ................................................... 18
VACUUM LINES ....................................................... 19
Removal and Installation ........................................ 19
Inspection ............................................................... 19
VISUAL INSPECTION ......................................... 19
CHECK VALVE INSPECTION ............................. 20
FRONT DISC BRAKE ............................................... 21
Component ............................................................. 21
Inspection ............................................................... 21
PAD THICKNESS ................................................ 21
Pad Replacement ................................................... 22
REMOVAL ........................................................... 22
INSTALLATION ................................................... 22
Caliper Removal and Installation ............................ 22
REMOVAL ........................................................... 22
INSTALLATION ................................................... 23
Caliper Disassembly and Assembly ....................... 23
DISASSEMBLY ................................................... 23
INSPECTION AFTER DISASSEMBLY ................ 24
DISC ROTOR INSPECTION ............................... 24
ASSEMBLY ......................................................... 25
BRAKE BURNISHING PROCEDURE ................. 25
REAR DISC BRAKE ................................................. 27
Component ............................................................. 27
Inspection ............................................................... 27
PAD WEAR INSPECTION ................................... 27
Pad Replacement ................................................... 28
REMOVAL ........................................................... 28

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NISSAN X-TRAIL 2003 Electronic Repair Manual BR-2
INSTALLATION .................................................... 28
Caliper Removal and Installation ............................ 29
REMOVAL .....................................................

Page 837 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual PRECAUTIONS
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PRECAUTIONSPFP:00001
Precautions for Models with SRS Air Bag and Pre-Tensioner Seat BeltEFS000BY
WA RN ING:
lBefore removing and installing components and ha

PRECAUTIONS
BR-3
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PRECAUTIONSPFP:00001
Precautions for Models with SRS Air Bag and Pre-Tensioner Seat BeltEFS000BY
WA RN ING:
lBefore removing and installing components and harnesses of SRS air bag and seat belt pre-ten-
sioner system, turn ignition switch OFF, disconnect battery ground cable, and wait at least 3 min-
utes. (This discharges electricity held in the air bag sensor unit's additional power circuit.)
lDo not use pneumatic or electric tools to remove and install the components.
lDo not solder SRS air bag and seat belt pre-tensioner system harnesses when making repairs.
Make sure harness is not pinched and there is no contact with other components.
lWhen checking the SRS air bag and the seat belt pre-tensioner circuit or the components of each
system, do not use an electric tester such as a circuit tester. (This is to prevent accidental trigger-
ing caused by the weak electric current of a tester.)
lNever insert foreign material (such as a screwdriver) in the air bag module and pre-tensioner seat
belt connectors. (The units may be actuated by mistake by static electricity.)
lSeat belt pre-tensioner and SRS air bag harnesses can be distinguished from other harnesses by
their yellow connectors.
lWhen servicing, refer to “SB Seat Belt” and “SRS Air Bag” for safety.
Precautions for Brake SystemEFS000BZ
lClean dust on brake pads, shoes, drums, and back plates with a vacuum dust collector. Do not blow with
compressed air.
lRecommended fluid is brake fluid “DOT 3” or “DOT 4”.
lNever reuse drained brake fluid.
lBe careful not to splash brake fluid on painted areas such as the body. If brake fluid is splashed or spilled
on paint, wipe it off and flush the area with water immediately.
lUse only clean brake fluid when cleaning master cylinder and disc brake components.
lNever use mineral oils such as gasoline or kerosene to clean. They will ruin the rubber parts and cause
improper operation.
lAlways use a flare nut torque wrench to securely tighten brake
tube flare nuts.
lThe brake system is an important safety part. If a brake fluid
leak is detected, always disassemble the related parts. If dam-
age, deformation or excessive wear is detected, replace
affected parts with new ones.
lBefore staring operation, be sure to turn the ignition switch OFF
and disconnect the ABS actuator and control module connector
or battery cables.
lWhen installing brake piping, be sure to check torque.SBR686C

Page 838 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual BR-4
PREPARATION
PREPARATION
PFP:00002
Special Service ToolsEFS000C0
Description Application
Output rod gauge
KV9910 02000 Adjusting brake booster output rod
dimensions
ZZA0756D

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NISSAN X-TRAIL 2003 Electronic Repair Manual NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
BR-5
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NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartEFS000TK
Use the chart belo

Page 840 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual BR-6
BRAKE PEDAL
BRAKE PEDAL
PFP:46501
On-Vehicle Inspection and AdjustmentEFS000C1
Adjust clearance between dash panel and brake pedal upper surface
to the following dimensions.
SFIA0348E
H1Brake ped

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