2003 NISSAN X-TRAIL steering wheel

RSU-4
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartEES000IE
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
RSU-5RSU-8—
—
—
RSU-5 RSU-6RSU-5
NVH in PR section.
NVH in RFD section.
NVH in FAX and FSU sections.
NVH in WT section.
NVH in WT section.
NVH in RAX section.
NVH in BR section.
NVH in PS section.
Possible cause and SUSPECTED PARTS
Improper installation, looseness
Shock absorber deformation, damage or deflection
Bushing or mounting deterioration
Parts interference
Spring fatigue
Suspension looseness
Incorrect wheel alignment
Stabilizer bar fatigue
PROPELLER SHAFT
DIFFERENTIAL
FRONT AXLE AND FRONT SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
STEERING
Symptom REAR SUSPENSIONNoise×××××× ××××××××
Shake×××× × × ××××××
Vibration××××× × ×× × ×
Shimmy×××× × ××× ××
Judder ××× ××× ××
Poor quality ride or
handling××××× ×× ×××

WT-2
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartEES000J1
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
WT-3—
—
—
—
—
—
NVH in PR section.
NVH in RFD section.
NVH in FAX and FSU sections.
NVH in RAX and RSU sections.
Refer to TYRES in this chart.
Refer to ROAD WHEEL in this chart.
NVH in RAX section.
NVH in BR section.
NVH in PS section.
Possible cause and SUSPECTED PARTS
Out-of-round
Imbalance
Incorrect tyre pressure
Uneven tyre wear
Deformation or damage
Non-uniformity
Incorrect tyre size
PROPELLER SHAFT
DIFFERENTIAL
FRONT AXLE AND FRONT SUSPENSION
REAR AXLE AND REAR SUSPENSION
TYRES
ROAD WHEELS
DRIVE SHAFT
BRAKE
STEERING
SymptomTYRESNoise×××××× ×××× ××××
Shake××××× ×× ×× ××××
Vibration×××××××
Shimmy××××××× ×× × ××
Judder××××× × ×× × ××
Poor quality ride
or handling××××× × ×× ×
ROAD WHEELNoise×× × ××××× ×××
Shake×× × × ××× ×××
Shimmy, Judder×× × ××× ××
Poor quality ride
or handling×× × ×××

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
BR-5
C
D
E
G
H
I
J
K
L
MA
B
BR

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartEFS000TK
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
X: ApplicableReference page
BR-27
, BR-32
BR-27
, BR-32
.
BR-27
, BR-32—
—
BR-30, BR-35—
—
—
BR-30, BR-36—
NVH in PR section
NVH in RFD section
NVH in FAX, RAX and FSU, RSU section
NVH in WT section
NVH in WT section
NVH in RAX section
NVH in PS section
Possible cause and
SUSPECTED PARTS
Pads - damaged
Pads - uneven wear
Shims damaged
Rotor imbalance
Rotor damage
Rotor runout
Rotor deformation
Rotor deflection
Rotor rust
Rotor thickness variation
Drum out of round
PROPELLER SHAFT
DIFFERENTIAL
AXLE AND SUSPENSION
TYRES
ROAD WHEEL
DRIVE SHAFT
STEERING
Symptom BRAKENoise××× ×× ×××
××
Shake×××××
××
Shimmy, Judder××××××× ××× ×

BRC-2
ESP/TCS/ABS
PRECAUTIONS ......................................................... 49
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ................................................................. 49
Precautions for Brake System ................................ 49
Precautions for Brake Control ................................ 49
PREPARATION ......................................................... 50
Special Service Tools ............................................. 50
ON-VEHICLE SERVICE ............................................ 51
Adjustment of Steering Angle Sensor Neutral Posi-
tion .......................................................................... 51
SYSTEM DESCRIPTION .......................................... 52
System Diagram ..................................................... 52
ESP Function .......................................................... 52
TCS Function .......................................................... 52
ABS Function .......................................................... 53
EBD Function ......................................................... 53
Fail-Safe Function .................................................. 53
ESP/ TCS SYSTEM ............................................ 53
ABS, EBD SYSTEM ............................................ 53
Hydraulic Circuit Diagram ....................................... 54
CAN COMMUNICATION ........................................... 55
System Description ................................................. 55
CAN Communication Unit ....................................... 55
TYPE 3/TYPE4 .................................................... 55
TYPE 5 ................................................................ 56
TROUBLE DIAGNOSIS ............................................ 58
How to Proceed With Diagnosis ............................. 58
BASIC CONCEPT ............................................... 58
DIAGNOSIS FLOWCHART ................................. 59
ASKING COMPLAINTS ....................................... 60
EXAMPLE OF DIAGNOSIS SHEET .................... 60
Component Parts and Harness Connector Location ... 61
Schematic ............................................................... 62
Wiring Diagram —ESP/TCS/ABS— ..................... 63
LHD MODEL ........................................................ 63
RHD MODEL ....................................................... 69
Control Unit Input/Output Signal Standard .............. 75
REFERENCE VALUE FROM CONSULT-II ......... 75
CONSULT-II Functions ........................................... 77
CONSULT-II MAIN FUNCTION ........................... 77
CONSULT-II BASIC OPERATION PROCEDURE
... 77
SELF-DIAGNOSIS .............................................. 79
DATA MONITOR .................................................. 81
ACTIVE TEST ..................................................... 84
For Fast and Accurate Diagnosis ........................... 86
PRECAUTIONS FOR DIAGNOSIS ..................... 86
Basic Inspection ..................................................... 87
BASIC INSPECTION 1 BRAKE FLUID AMOUNT,
LEAKS, AND BRAKE PADS INSPECTION ......... 87
BASIC INSPECTION 2 POWER SYSTEM TER-
MINAL LOOSENESS AND BATTERY INSPEC-
TION .................................................................... 87
BASIC INSPECTION 3 ABS WARNING LAMP,
ESP OFF INDICATOR LAMP, SLIP INDICATOR
LAMP AND BRAKE WARNING LAMP INSPEC-TION .................................................................... 88
Inspection 1 Wheel Sensor System ........................ 89
INSPECTION PROCEDURE ............................... 89
Inspection 2 Engine System ................................... 91
Inspection 3 ESP/TCS/ABS Control Unit System ... 91
Inspection 4 Pressure Sensor and the Circuit
between Pressure Sensor and ESP/TCS/ABS Con-
trol Unit. ................................................................... 91
Inspection 5 Steering Angle Sensor and Circuit
between Steering Angle Sensor and ESP/TCS/ABS
Control Unit. ............................................................ 93
Inspection 6 Yaw Rate/Side G sensor and the Circuit
between Yaw Rate/Side G sensor and ESP/TCS/
ABS Control Unit. .................................................... 95
Inspection 7 Solenoid Valve, ESP Switch-over Sole-
noid Valve and Circuit ............................................. 96
Inspection 8 Actuator Motor, Motor Relay and Circuit
... 99
Inspection 9 Actuator Relay and Circuit ................101
Inspection 10 Stop Lamp Switch and Circuit .........103
Inspection 11 ESP/TCS/ABS Control Unit Power
Supply Circuit ........................................................103
Inspection 12 When “EMERGENCY BRAKE” is
indicated in the Self-Diagnosis Results .................105
Inspection 13 When “ST ANG SEN SIGNAL” is Indi-
cated in the Self-Diagnosis Results ......................105
Inspection 14 Brake Fluid Level of Reservoir Tank,
Communication Circuit between ESP/TCS/ABS
Control Unit and Brake Fluid Level Warning Switch .106
Inspection 15 CAN Communication Circuit, ESP/
TCS/ABS Control Unit and Steering Angle Sensor .107
Component Check ................................................107
ESP OFF SWITCH ............................................107
ESP RELAY BOX ...............................................107
ESP ACTUATOR ...............................................108
Symptom 1: ABS Works Frequently. .....................110
Symptom 2: Unexpected Pedal Action .................110
Symptom 3: Longer Stopping Distance ................. 111
Symptom 4: ABS Does Not Work. ........................112
Symptom 5: Pedal Vibration and Noise ................112
Symptom 6: ESP OFF Indicator Lamp Does Not Illu-
minate ...................................................................113
Symptom 7: SLIP Indicator Lamp Does Not Illumi-
nate .......................................................................114
Symptom 8: Vehicle Jerks During ESP/TCS/ABS
Control ..................................................................114
WHEEL SENSORS .................................................116
Removal and Installation .......................................116
SENSOR ROTOR ....................................................117
Removal and Installation .......................................117
REMOVAL ..........................................................117
INSTALLATION ..................................................117
ESP/TCS/ABS CONTROL UNIT .............................118
Removal and Installation .......................................118
REMOVAL ..........................................................118
INSTALLATION ..................................................118
ESP/TCS/ABS ACTUATOR AND RELAY BOX ......119
Removal and Installation .......................................119

BRC-36
[ABS]
TROUBLE DIAGNOSIS

5. CHECK WHEEL SENSOR HARNESS
1. Turn ignition switch OFF and disconnect malfunctioning wheel
sensor connector and ABS actuator and electric unit (control
unit) connector.
2. Check continuity between terminals. (Also check continuity
when the steering wheel is turned right and left and when the
sensor harness inside the wheel house is moved.)
OK or NG
OK >> GO TO 6.
NG >> Repair harness and connector between ABS actuator and electric unit (control unit) and wheel
sensor.
6. CHECK WHEEL SENSOR POWER SUPPLY CIRCUIT
1. Connect wheel sensor and ABS actuator and electric unit (con-
trol unit) connectors.
2. Turn ignition switch ON and check voltage between power sup-
ply terminal and ground.
OK or NG
OK >> Replace wheel sensor.
NG >> Replace ABS actuator and electric unit (control unit).
SFIA2015E
Power supply circuit Signal circuit Ground circuit
WheelABS actuator
and electric unit
(control unit)
harness con-
nector E69Wheel sensor
harness con-
nectorABS actuator
and electric unit
(control unit)
harness con-
nector E69Wheel sensor
harness con-
nectorABS actuator and
electric unit (con-
trol unit) harness
connector E69
(Signal)Ground
Front RH (E17) 24 (W) 1 (W) 9 (B) 2 (B) 9 (B), 24 (W) —
Front LH (E59) 22 (L/W) 1 (L/W) 7 (L/Y) 2 (L/Y) 7 (L/Y), 22 (L/W) —
Rear RH (B130) 28 (B/W) 1 (B/W) 13 (L/R) 2 (L/R) 13 (L/R), 28 (B/W) —
Rear LH (B126) 26 (BR) 1 (BR) 11 (BR/W) 2 (BR/W) 11 (BR/W), 26 (BR) —
Power supply circuit : Continuity should exist.
Signal circuit : Continuity should exist.
Ground circuit : Continuity should not exist.
Vo l ta g e
Front RH 1 (W) - Ground : 8V or more
Front LH 1 (L/W) - Ground : 8V or more
Rear RH 1 (B/W) - Ground : 8V or more
Rear LH 1 (BR) - Ground : 8V or more
SFIA2016E

ON-VEHICLE SERVICE
BRC-51
[ESP/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC

ON-VEHICLE SERVICEPFP:00000
Adjustment of Steering Angle Sensor Neutral PositionEFS0019R
In case of doing work that applies to the list below, make sure to adjust neutral position of steering angle sen-
sor before running vehicle.
×: Required
–: Not required
CAUTION:
To adjust neutral position of steering angle sensor, make sure to use CONSULT-II.
(Adjustment cannot be done without CONSULT-II.)
1. Stop vehicle with front wheels in straight-ahead position.
2. Connect CONSULT-II and CONSULT-II CONVERTER to data link connector on vehicle, and turn ignition
switch ON (do not start engine).
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
3. Touch “ABS”, “WORK SUPPORT” and “ST ANGLE SENSOR ADJUSTMENT” on CONSULT-II screen in
this order. Refer to BRC-77, "
CONSULT-II BASIC OPERATION PROCEDURE" .
4. Touch “START”.
CAUTION:
Do not touch steering wheel while adjusting steering angle
sensor.
5. After approximately 10 seconds, touch “END”. (After approxi-
mately 60 seconds, it ends automatically.)
6. Turn ignition switch OFF, then turn it ON again.
CAUTION:
Be sure to carry out above operation.
7. Run vehicle with front wheels in straight-ahead position, then
stop.
8. Select “DATA MONITOR”, “SELECTION FROM MENU”, and “STR ANGLE SIG” on CONSULT-II screen.
Then make sure “STR ANGLE SIG” is within 0 ±3.5 deg. If value is more than specification, repeat steps 3
to 7.
9. Erase memory of ABS actuator and electric unit (control unit) and ECM.
10. Turn ignition switch OFF.
Situation Adjustment of Steering Angle Sensor Neutral Position
Removing/Installing ESP/TCS/ABS control unit−
Replacing ESP/TCS/ABS control unit−
Removing/Installing steering angle sensor×
Removing/Installing steering components×
Removing/Installing suspension components×
Change 4 tires to new ones –
Tire rotation–
Adjusting wheel alignment×
SFIA0371E

BRC-52
[ESP/TCS/ABS]
SYSTEM DESCRIPTION

SYSTEM DESCRIPTIONPFP:00000
System DiagramEFS0019X
ESP FunctionEFS0019W
1. The Electronic Stability Program is called the ESP for short.
ESP is indicated as ESP on CONSULT-II screen.
2. In addition to the ABS/TCS function, ESP detects a driver's steering operation amount and brake opera-
tion amount from steering angle sensor and pressure sensor. Using the information from yaw rate/side G
sensor and wheel sensors, ESP judges the driving condition (conditions of understeer and oversteer) to
improve the stability by controlling brake on 4 wheels and engine output.
3. During ESP operation, SLIP indicator lamp flashes to inform the driver of the operation.
CAUTION:

During ESP operation, body and the brake pedal lightly vibrate and their mechanical noise may be
heard. This is a normal condition.

If vehicle is rotated on a turn table, or rolled and rocked on a ship, the ABS warning lamp,
ESP OFF indicator lamp, and SLIP indicator lamp may turn on. In this case, start engine on a nor-
mal road again. If the ABS warning lamp, ESP OFF indicator lamp, and SLIP indicator lamp turn
off after the restart, it is normal.

When driving in a steep slope such as a bank, ABS warning lamp, ESP OFF indicator lamp, and
SLIP indicator lamp may turn on. In this case, start the engine on a normal road again. If ABS
warning lamp, ESP OFF indicator lamp, and SLIP indicator lamp turn off after the restart, it is nor-
mal.
TCS FunctionEFS0019V
1. With the wheel sensor signals from 4 wheels, the ESP/TCS/ABS control unit detects a wheel spin. If a
wheel spins, the control unit controls brake fluid pressure to the spinning wheel, and cuts the fuel to the
engine. It also closes the throttle valve to reduce the engine torque. Furthermore, throttle position is con-
trolled to the appropriate engine torque.
2. If a wheel spins, the TCS system works and function by applying brake fluid pressure to the spinning
wheel.
SFIA2012E

SYSTEM DESCRIPTION
BRC-53
[ESP/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC

3. During TCS operation, it informs a driver of system operation by flashing SLIP indicator lamp.
CAUTION:

During TCS operation, body and brake pedal lightly vibrate and the mechanical noise may be
heard. This is a normal condition.

Depending on road circumstances, a driver may have a sluggish feel. This is not abnormal,
because the optimum traction has the highest priority by TCS operation.

When the vehicle is passing through a road where the surface friction coefficient varies, down-
shifting or depressing the accelerator pedal fully may activate TCS temporarily.
ABS FunctionEFS0019U
1. In cases of braking suddenly or braking on slippery road (ice road), ABS functions prevent wheels from
lock, improve the stability in sudden braking, and make efficient avoidance of obstacles with steering
manipulation by detecting wheel speed and controlling brake fluid pressure.
2. EBD is integrated in ESP/TCS/ABS system.
CAUTION:

During ABS operation, brake pedal lightly vibrates and its mechanical noise may be heard. This is
a normal condition.

When starting engine, or just after starting vehicle, brake pedal may vibrate or the motor operating
noise may be heard from engine compartment. This is a normal status of the operation check.

The stopping distance may be longer than that of vehicles without ABS when vehicle drives on
rough, gravel, or snowy (fresh deep snow) road.
EBD FunctionEFS004HO

Electronic Brake Distributor is a function that detects subtle slippages between front and rear wheels dur-
ing braking, and it improves handling stability by electronically controlling the brake fluid pressure which
results in reduced rear wheel slippage.

In case of electrical system break down, the fail-safe function is activated, EBD and ABS becomes inoper-
ative, and ABS warning lamp and brake warning lamp are turned on.

Electrical System Diagnosis by CONSULT-II is available.
Fail-Safe FunctionEFS004HP
ESP/ TCS SYSTEM
In case of throttle control system trouble, ESP OFF indicator lamp and SLIP indicator lamp are turned on, and
the condition of vehicle is the same as the condition of vehicles without ESP/TCS equipment. In case of trou-
ble to the throttle control system, the ABS control continues to operate normally without ESP/TCS control.
CAUTION:
If the fail-safe function is activated, then perform the self- diagnosis for ESP/TCS/ABS control system.
ABS, EBD SYSTEM
In case of electrical malfunctions with the ABS, ABS warning lamp, ESP OFF indicator lamp and SLIP indica-
tor lamp will turn on. In case of electrical malfunctions with the EBD, brake warning lamp, ABS warning lamp,
ESP OFF indicator lamp and SLIP indicator lamp will turn on. Simultaneously, the ESP/ TCS/ABS become one
of the following conditions of the fail-safe function.
1. For ABS trouble, only the EBD is activated and the condition of vehicle is the same condition of vehicles
without ESP/TCS/ABS equipment.
2. For EBD trouble, the EBD and ABS become inoperative, and the condition of vehicle is the same as the
condition of vehicles without ESP/TCS/ABS, EBD equipment.
NOTE:
In condition 1 described above, an ABS self-diagnosis sound may be heard. That is a normal condition
because a self-diagnosis for “Ignition switch ON” and “The first starting” are being performed.