2003 NISSAN X-TRAIL brake fluid

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-297
[EXC.F/EURO-OBD]
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Vehicle Does Not Creep Backward In “R” PositionECS00EBJ
SYMPTOM:
Vehicle does not creep backward when selecting “R” position.
1. CHECK A/T FLUID LEVEL
Check A/T fluid level. Refer to AT- 1 6 , "
Checking A/T Fluid" .
OK or NG
OK >> GO TO 2.
NG >> Refill ATF.
2. CHECK LINE PRESSURE
Check line pressure at idle with selector lever in R position. Refer to
AT- 2 6 0 , "
Line Pressure Test" .
OK or NG
OK >> GO TO 3.
NG >> 1. Remove control valve assembly. Refer to AT- 4 0 4 ,
"Control Valve Assembly and Accumulators" .
2. Check the following items:
–Valves to control line pressure (Pressure regulator
valve, pressure modifier valve, pilot valve and pilot fil-
ter)
–Line pressure solenoid valve
3. Disassemble A/T. Refer to AT- 4 2 4 , "
Disassembly" .
4. Check the following item:
–Oil pump assembly. Refer to AT- 4 4 3 , "Oil Pump" .
3. CHECK STALL TEST
Check stall revolution with selector lever in 1 and R positions.
Refer to AT- 2 5 7 , "
Stal l Te st" .
OK or NG
OK >> GO TO 4.
OK in “1” position, NG in R position>>1.Disassemble A/T. Refer to
AT- 4 2 4 , "
Disassembly" .
2. Check the following items:
–Reverse clutch assembly. Refer to AT- 4 6 4 , "Reverse
Clutch" .
–Low & reverse brake assembly. Refer to AT- 4 8 3 , "Low
& Reverse Brake" .
NG in both “1” and “R” positions>>GO TO 6.
SAT638A
SAT494G
SAT493G

AT-298
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS

4. CHECK A/T FLUID CONDITION
1. Remove oil pan. Refer to AT- 4 0 4 , "
COMPONENTS" .
2. Check A/T fluid condition. Refer to AT- 2 5 6 , "
FLUID CONDITION
CHECK" .
OK or NG
OK >> GO TO 5.
NG >> GO TO 6.
5. CHECK SYMPTOM
Check again. Refer to AT- 2 6 4 , "
2. CHECK AT IDLE" .
OK or NG
OK >>INSPECTION END
NG >> 1. Perform TCM input/output signal inspection. Refer to AT- 2 8 6 , "
TCM Terminals and Reference
Va l u e" .
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
6. DETECT MALFUNCTIONING ITEM
1. Disassemble A/T. Refer to AT- 4 2 4 , "
Disassembly" .
2. Check the following items:
–Reverse clutch assembly. Refer to AT- 4 6 4 , "Reverse Clutch" .
–High clutch assembly. Refer to AT- 4 6 9 , "High Clutch" .
–Low & reverse brake assembly. Refer to AT- 4 8 3 , "Low & Reverse Brake" .
–Forward clutch assembly. Refer to AT- 4 7 5 , "Forward and Overrun Clutches" .
–Overrun clutch assembly. Refer to AT- 4 7 5 , "Forward and Overrun Clutches" .
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
SAT171B

AT-322
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS

Vehicle Does Not Decelerate By Engine BrakeECS00EBX
SYMPTOM:

Vehicle does not decelerate by engine brake when turning overdrive control switch OFF.

Vehicle does not decelerate by engine brake when shifting A/T from “D” to “2” position.

Vehicle does not decelerate by engine brake when shifting from 22 (12 ) to 11 .
1. CHECK PNP SWITCH CIRCUIT
Check PNP switch circuit. Refer to AT- 3 2 4 , "
TCM Self-diagnosis Does Not Activate" .
OK or NG
OK >> GO TO 2.
NG >> Check PNP switch circuit. Refer to AT- 3 2 4 , "
TCM Self-diagnosis Does Not Activate" .
2. ADJUST CONTROL CABLE
Check control cable. Refer to AT- 4 0 9 , "
Control Cable Adjustment" .
OK or NG
OK >> GO TO 3.
NG >> Adjust control cable. Refer to AT- 4 0 9 , "
Control Cable
Adjustment" .
3. CHECK VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR) AND CHECK VEHICLE SPEED
SENSOR·MTR CIRCUIT
Check vehicle speed sensor·A/T (revolution sensor) and vehicle speed sensor·MTR circuit. Refer to AT- 3 3 2 ,
"VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)" and AT- 3 3 9 , "DTC VEHICLE SPEED SENSOR
MTR" .
OK or NG
OK >> GO TO 4.
NG >> Repair or replace vehicle speed sensor·A/T (revolution sensor) and vehicle speed sensor·MTR
circuits.
4. CHECK A/T FLUID CONDITION
1. Remove oil pan. Refer to AT- 4 0 4 , "
COMPONENTS" .
2. Check A/T fluid condition. Refer to AT- 2 5 6 , "
FLUID CONDITION
CHECK" .
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
SAT023JB
SAT171B

REPAIR FOR COMPONENT PARTS
AT-483
[ALL]
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Low & Reverse BrakeECS00EC7
COMPONENTS
DISASSEMBLY
1. Check operation of low & reverse brake.
a. Apply compressed air to oil hole of transaxle case.
b. Check to see that retaining plate moves to snap ring.
c. If retaining plate does not contact snap ring:

D-ring might be damaged.

Fluid might be leaking past piston check ball.
2. Remove snap ring with flat-bladed screwdriver.
3. Remove retainer, low & reverse brake piston and spring retainer
from transaxle case.
4. Remove snap ring with flat-bladed screwdriver.
5. Remove driven plates, drive plate, retaining plate and dish
plates on transaxle case.
1. Driven plate 2. Dish plate 3. Snap ring
4. Spring retainer 5. D-ring 6. D-ring
7. Low & reverse brake piston 8. Retainer 9. Snap ring
10. Retaining plate 11. Drive plate 12. Retaining plate
SCIA3893E
SCIA4903E
SCIA4904E

BR-1
BRAKE SYSTEM
F BRAKES
CONTENTS
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SECTION
A
B
BR

BRAKE SYSTEM
PRECAUTIONS .......................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Precautions for Brake System .................................. 3
PREPARATION ........................................................... 4
Special Service Tools ............................................... 4
Commercial 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 ......................... 7
INSTALLATION ..................................................... 7
BRAKE FLUID ............................................................ 8
Checking Brake Fluid Level ..................................... 8
Checking Brake Line ................................................ 8
Changing Brake Fluid ............................................... 8
Bleeding Brake System ............................................ 9
BRAKE PIPING AND HOSE .................................... 10
Hydraulic Piping ..................................................... 10
Removal and Installation of Front Brake Piping and
Brake Hose ............................................................. 11
REMOVAL ............................................................ 11
INSTALLATION ................................................... 12
Removal and Installation of Rear Brake Piping and
Brake Hose ............................................................ 12
REMOVAL ........................................................... 12
INSTALLATION ................................................... 12
Inspection ............................................................... 13
BRAKE MASTER CYLINDER .................................. 14
Components ........................................................... 14
Removal and Installation ........................................ 14
REMOVAL ........................................................... 14INSTALLATION ................................................... 14
Disassembly and Assembly .................................... 15
MODELS WITHOUT ESP (PISTON STOPPER
APPLIED.) ........................................................... 15
MODELS WITHOUT ESP (PISTON STOPPER
NOT APPLIED.) .................................................. 17
MODELS WITH ESP ........................................... 19
BRAKE BOOSTER ................................................... 23
On-Vehicle Inspection and Service ......................... 23
FUNCTION INSPECTION ................................... 23
AIRTIGHTNESS INSPECTION ........................... 23
Removal and Installation ........................................ 23
REMOVAL ........................................................... 23
INSPECTION AFTER REMOVAL ....................... 24
INSTALLATION ................................................... 24
VACUUM LINES ....................................................... 25
Removal and Installation ........................................ 25
Inspection ............................................................... 26
VISUAL INSPECTION ......................................... 26
CHECK VALVE INSPECTION ............................. 26
FRONT DISC BRAKE ............................................... 27
Component ............................................................. 27
Inspection ............................................................... 27
PAD THICKNESS ................................................ 27
Pad Replacement ................................................... 28
REMOVAL ........................................................... 28
INSTALLATION ................................................... 28
Caliper Removal and Installation ............................ 28
REMOVAL ........................................................... 28
INSTALLATION ................................................... 29
Caliper Disassembly and Assembly ....................... 29
DISASSEMBLY ................................................... 29
INSPECTION AFTER DISASSEMBLY ................ 29
DISC ROTOR INSPECTION ............................... 30
ASSEMBLY ......................................................... 30
BRAKE BURNISHING PROCEDURE ................. 31
REAR DISC BRAKE ................................................. 32
Component ............................................................. 32
Inspection ............................................................... 32
PAD WEAR INSPECTION ................................... 32

PRECAUTIONS
BR-3
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PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EFS002F9
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 SystemEFS000BZ

Clean dust on brake pads, shoes, drums, and back plates with a vacuum dust collector. Do not blow with
compressed air.

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 such as the body. If brake fluid is splashed or spilled
on painted areas, wipe it off and flush the area with water immediately.

Use only clean brake fluid when cleaning master cylinder and disc brake components.

Never use mineral oils such as gasoline or kerosene to clean. They will ruin the rubber parts and cause
improper operation.

Always use a flare nut torque wrench to securely tighten brake
tube flare nuts.

Brake system is an important safety part. If a brake fluid leak is
detected, always disassemble the related parts. If damage,
deformation or excessive wear is detected, replace affected
parts with new ones.

Before starting operation, be sure to turn the ignition switch OFF
and disconnect the ABS actuator and control module connector
or battery cables.

When installing brake piping, be sure to check torque.SBR820BA

BR-4
PREPARATION

PREPARATIONPFP:00002
Special Service ToolsEFS00217
Commercial Service ToolsEFS00218
Tool number
Tool nameDescription
GG94310000
Flare nut torque wench
a: 10 mm (0.39 in)/12 mm (0.47 in)Removing and installing brake piping
NT406
Tool nameDescription
Brake fluid pressure gauge Measuring fluid pressure
S-NT151

BR-8
BRAKE FLUID

BRAKE FLUIDPFP:KN100
Checking Brake Fluid Level EFS000C5

Confirm reservoir tank fluid level is within the specifications
(between MAX and MIN lines).

Visually check around reservoir tank for fluid leaks.

If fluid level is excessively low, check brake system for leaks.

If warning lamp remains illuminated after parking lever is
released, check brake system for fluid leakage.
Checking Brake LineEFS001C5
CAUTION:
If leakage occurs around joints, retighten or, if necessary, replace damaged parts.
1. Check brake line (tube and hoses) for cracks, deterioration or
other damage. Replace and damaged parts.
2. Check for oil leakage by fully depressing brake pedal while
engine is running.
Changing Brake FluidEFS000C3
CAUTION:

Refill with new brake fluid “DOT 3 or DOT 4”.

Always keep fluid level higher than minimum line on reservoir tank.

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 water immediately.
1. Connect a vinyl tube to bleed valve.
2. Drain brake fluid gradually from bleed valve of each wheel while
depressing brake pedal.
3. Turn OFF ignition switch. Remove ABS actuator connector.
SFIA0066J
SBR389C
BRA0007D