2003 NISSAN X-TRAIL warning

BRC-56
[ESP/TCS/ABS]
GENERAL INFORMATION
GENERAL INFORMATION
PFP:00000
Fail-SafeEFS0019S
ABS SYSTEM
If a malfunction occurs in the electrical system, the ABS warning lamp, ESP OFF indicator lamp, and SLIP
indicator lamp in the meter will turn ON. In this condition, the ESP/TCS/ABS and EBD become one of the fol-
lowing conditions by the fail-safe function.
1. Only EBD operates. The same condition as that of models without ESP/TCS/ABS
2. ESP/TCS/ABS and EBD do not operate. Only normal brake operates on 4 wheels.
NOTE:
In the step 1 shown above, the self-diagnosis is carried out at the ignition switch is turned ON and when the
vehicle initial starts. ABS self-diagnosis noise may be heard as usual.
ESP/TCS SYSTEM
If a malfunction occurs in the electrical system, the ESP OFF indicator lamp and SLIP indicator lamp in the
meter turn on. In this condition, ESP/TCS will be deactivated and it becomes equal to that of models without
ESP/TCS. However, ABS is controlled normally.
If a malfunction occurs in the throttle control system, ESP/TCS control does not operate. Only ABS control
operates normally.
CAUTION:
If the fail-safe function operates, carry out the self-diagnosis for ESP/TCS/ABS control system.
Hydraulic CircuitEFS0019T
CAUTION:
lWhen installing, check for twist and fracture.
lMake sure that there is no interference with other parts when turning the steering clockwise or
counter clockwise.
lThe brake piping is an important safety part. If a brake fluid leak is detected, always disassemble
and replace with a new one, if necessary.
ABS FunctionsEFS0019U
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 4-wheel speed and controlling 4-wheel brake fluid pressure.
2. EBD is integrated in ESP/TCS/ABS system.
CAUTION:
lDuring ABS operation, the brake pedal lightly vibrates and its mechanical noise may be heard.
This is a normal condition.
SFIA0346E

GENERAL INFORMATION
BRC-57
[ESP/TCS/ABS]
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lWhen starting the engine, or just after starting the vehicle, 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.
lThe stopping distance may be longer than that of vehicles without ABS when the vehicle drives on
rough, gravel, or snowy (fresh deep snow) road.
TCS FunctionsEFS0019V
1. With the wheel speed 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
controlled to the appropriate engine torque.
2. If a wheel spins, the TCS system works same as LSD (Limited Slip Differential) function applying brake
fluid pressure to the spinning wheel.
3. During TCS operation, it informs a driver of system operation by flashing SLIP indicator lamp.
CAUTION:
lDuring TCS operation, the body and the brake pedal lightly vibrate and the mechanical noise may
be heard. This is a normal condition.
lDepending on road circumstances, the driver may have a sluggish feel. This is not abnormal,
because the optimum traction has the highest priority by TCS operation.
lWhen 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.
ESP FunctionsEFS0019W
1. The Electronic Stability Program is called the ESP for short.
The ESP is indicated as the VDC (the Vehicle Dynamics Control) on the CONSULT-II screen.
2. In addition to the ABS/TCS function, ESP detects the driver's steering operation amount and brake opera-
tion amount from the steering angle sensor and pressure sensor. Using the information from the yaw rate/
side G sensor and wheel speed sensors, ESP judges the driving condition (conditions of understeer and
oversteer) to improve the stability by controlling the brake on 4 wheels and engine output.
3. During ESP operation, the SLIP indicator lamp flashes to inform the driver of the operation.
CAUTION:
lDuring ESP operation, the body and the brake pedal lightly vibrate and their mechanical noise
may be heard. This is a normal condition.
lIf the 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 the engine on a
normal road again. If the ABS warning lamp, ESP OFF indicator lamp, and SLIP indicator lamp
turn OFF after the restart, it is normal.
lWhen driving in a steep slope such as a bank, the 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 the
ABS warning lamp, ESP OFF indicator lamp, and SLIP indicator lamp turn OFF after the restart, it
is normal.

BRC-74
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
(Note 1): When the standard value is checked using a circuit tester for voltage measurement, the connector terminals should not extend
forcefully.
(Note 2): Check the pressure of the tire in normal condition.
(Note 3): ON/OFF timing of the ABS warning lamp
ON: When the ignition switch is turned ON (before engine start) or a malfunction is detected.
OFF: 2 seconds after the engine started (the system is in normal condition).
(Note 4): ESP OFF indicator lamp ON/OFF timing
ON: When the ignition switch is turned ON (before engine start) or a malfunction is detected, if the ESP OFF switch is ON.
OFF: 2 seconds after the engine started (the system is in normal condition) and ESP OFF switch is OFF.67
Body
groundPressure sensorIgnition switch ON Approx. 0V
Pressure sensor
and circuit 68When ignition switch ON and
brake pedal released.Approx. 0.6V
69 Ignition switch ON Approx. 0V
18 Side G sensor Ignition switch ON Approx. 2.5VYaw rate /Side G
sensor and circuit
34
Yaw rate/Side G sensorIgnition switch ON Battery voltage (Approx. 12V)
Yaw rate /Side G
sensor and circuit 77 Ignition switch ON
78 Ignition switch ON Approx. 2.5V
79
Ya w r a t e s e n s o rIgnition switch ON
Ya w r a t e s e n s o r
and circuit
80 Ignition switch ON Approx. 0V
30 ABS warning lampABS warning lamp turns on
(Note 3)Approx. 0V
ABS warning lamp
and circuit
ABS warning lamp turns off
(note 3)Battery voltage (Approx. 12V)
70 ESP OFF indicator lampESP OFF indicator lamp turns
on (Note 4)Approx. 0V
ESP OFF warning
lamp and circuit
ESP OFF indicator lamp turns
off (note 4)Battery voltage (Approx. 12V)
83 SLIP indicator lampWhen SLIP indicator lamp is ON
(Note 5)Approx. 0V
SLIP indicator
lamp and circuit
SLIP indicator lamp turns off
(note 5)Battery voltage (Approx. 12V)
40 Brake fluid level warning
switchBrake fluid is not enough Battery voltage (Approx. 12V) Brake fluid level
warningswitchand
circuit
Brake fluid is enough Approx. 0V
76Body
groundParking brake signalApply the parking brake. Battery voltage (Approx. 12V)
Parking brake
switch and circuit
Release the parking brake. Approx. 0V Measure-
ment termi-
nalMeasuring point Standard value (Note 1)(Reference) Check
items for malfunc-
tion
+–
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BRC-76
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
OFF SWESP OFF SW
ON/OFF conditionESP OFF switch ON
(When ESP OFF indicator
lamp is ON.)ON
ESP OFF switch circuit
ESP OFF switch OFF
(When ESP OFF indicator
lamp is OFF.)OFF
ABS WARN LAMPABS warning lamp sta-
tus (Note 2)When ABS warning lamp is
ON.ON
ABS warning lamp circuit
When ABS warning lamp is
OFF.OFF
OFF LAMPESP OFF indicator
lamp status (Note 3)When ESP OFF indicator
lamp is ON.ON
ESP OFF indicator lamp
circuit
When ESP OFF indicator
lamp is OFF.OFF
SLIP LAMPSLIP indicator lamp
status (Note 4)When SLIP indicator lamp is
ONON
SLIP indicator lamp cir-
cuit
When SLIP indicator lamp is
OFFOFF
FR LH IN SOL
FR LH OUT SOL
FR RH IN SOL
FR RH OUT SOL
RR LH IN SOL
RR LH OUT SOL
RR RH IN SOL
RR RH OUT SOLSolenoid valve opera-
tionActuator (solenoid valve) is
active (²Active Test²with
CONSULT-II) or actuator relay
is inactive (in fail-safe mode).ON
Solenoid valve and cir-
cuit
When the actuator (solenoid
valve) is not active and actua-
tor relay is active (ignition
switch ON).OFF
USV [FR-PL]
UISV [FL-RR]
HSV [FR-RL]
HSV [FL-RR]ESP switch-over sole-
noid valve statusWhen the actuator (switch-
over solenoid valve) is active
(²Active test²with CONSULT-
II) or the actuator relay is inac-
tive (when fail-safe mode).ON
Switch-over solenoid
valve and circuit
When the actuator (switch-
over solenoid valve) is inactive
or the actuator relay is active
(ignition switch ON).OFF
V/R OUTPUTActuator relay acti-
vated
(ON/OFF)When the actuator relay is
active (the engine is running).ON
Actuator relay and circuit When the actuator relay is not
active (before the engine get
started and in the fail-safe
mode).OFF
M/R OUTPUTActuator motor and
motor relay status (ON/
OFF)When the actuator motor and
motor relay are active (²Active
test²with CONSULT-II).ON
Actuator motor, motor
relay, and circuit
When the actuator motor and
motor relay are inactive.OFF Data monitor item ContentsData monitor
(Reference) Check items
for malfunction
ConditionReference value in
normal operation

TROUBLE DIAGNOSIS
BRC-77
[ESP/TCS/ABS]
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(Note 1): Check the pressure of the tire in normal condition.
(Note 2): ON/OFF timing of the ABS warning lamp
ON: For approximately 0.5 seconds after the ignition switch is turned ON, or when a malfunction is detected.
OFF: Approximately 0.5 seconds after the ignition switch is turned ON (when the system is in normal operation).
(Note 3): ON/OFF timing of the ESP OFF indicator lamp
ON: For approximately 0.5 seconds after the ignition switch is turned ON, or when a malfunction is detected ESP OFF switch is ON.
OFF: Approximately 0.5 seconds after the ignition switch is turned ON (when the system is in normal operation) or when ESP OFF
switch is OFF.
(Note 4): SLIP indicator lamp ON/OFF timing
ON: For approximately 0.5 seconds after the ignition switch is turned ON, or when a malfunction is detected.
OFF: Approximately 0.5 seconds after the ignition switch is turned ON (when the system is in normal operation) and ESP/TCS function
is not activated.
Flashing: ESP/TCS function is active during driving.
Functions of CONSULT-IIEFS001A7
CONSULT-II MAINLY FUNCTION APPLICATION TO ESP/TCS/ABS
´: Applicable
–: Not applicableFLUID LEV SWBrake fluid level warn-
ingswitchstatus.When brake fluid level warning
switch is ON.ON
Brake fluid level warning
switch, brake warning
lamp and circuit. When brake fluid lever warning
switch is OFF.OFF
EBD FAIL SIG
ABS FAIL SIG
TCS FAIL SIG
VDC FAIL SIGSystem fail signal sta-
tusMalfunctions condition
(When system failed)OFFEBD system
ABS system
TCS system
ESP system Data monitor item ContentsData monitor
(Reference) Check items
for malfunction
ConditionReference value in
normal operation
Item Self-diagnosis Data monitor Active test
Wheel speed sensors´´–
Solenoid valves´´´
Switch-over solenoid valves´´´
Stop lamp switch´´–
Ya w r a te s e n s o r´´´
Side G sensor´´´
Press sensor´´´
Steering angle sensor´´´
Actuator relay´´´
Motor relay´´´
ABS warning lamp –´´
Battery voltage´´–
ESP/TCS/ABS C/U´––
ESP/TCS/ABS actuator motor´´´
CAN communication´´–
Engine speed signal –´–
ESP OFF switch –´–
ESP OFF indicator lamp –´´
SLIP indicator lamp –´´
Throttle angle –´–

BRC-78
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
SELF-DIAGNOSIS
Description
If a malfunction is detected in the system, the ABS warning lamp, ESP OFF indicator lamp, and SLIP indicator
lamp on the meter turn on. In this case, perform the self-diagnosis as follows:
Procedure
1. Perform aBRC-89, "Basic Inspection"using information from the customer.
2. After the ignition switch is turned OFF, connect the CONSULT-II
connector to the vehicle-side data link connector. The data link
connector is on the lower instrument cover).
3. Start the engine and drive at Approx. 30 km/h (19 MPH) for
approx. 1 minute.
4. After stopping the vehicle, with the engine still idling, touch “
START”, “ABS”, “SELF-DIAG RESULTS” on the CONSULT-II
screen in this order.
CAUTION:
Just after starting the engine, or turning the ignition switch
ON,²ABS²may not be displayed on the system selection
screen even if²START²is touched. In this case, start the
self-diagnosis again from step 2. If it cannot be shown after
several attempts, the ESP/TCS/ABS control unit may mal-
function. Repair or replace the control unit.
5. The self-diagnosis result is displayed. (If necessary, touch²PRINT²to print the self-diagnosis result.)
lWhen²NO FAILURE²is shown, check the ABS warning lamp, ESP OFF indicator lamp, SLIP indicator
lamp. Refer toBRC-88, "
For Correct and Quick Diagnosis".
lCONSULT-II self-diagnosis results are displayed without regard to occurrence timing. In some case, the
later ones (timing value is small) appear on the next screen.
6. Go to appropriate²Inspection²chart according to²Self-Diagnostic Items to Result Mode²and repair or
replace as necessary.
7. Start the engine and drive at Approx. 30 km/h (19 MPH) for Approx. 1 minute.
CAUTION:
Check again to make sure that there is NO MALFUNCTION on other parts.
8. Turn the ignition switch OFF to prepare for erasing the memory.
9. Start the engine and touch²START²,²ABS²,²SELF-DIAG RESULTS²and²ERASE²on CONSULT-II
screen in this order to ease the memory.
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TROUBLE DIAGNOSIS
BRC-79
[ESP/TCS/ABS]
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CAUTION:
If the memory cannot be erased, go to step 6.
10. Drive the vehicle at Approx. 30 km/h (19 MPH) and check that the ABS warning lamp, ESP OFF indicator
lamp, and SLIP indicator lamp stay off.
CAUTION:
ESP OFF switch is not cancelled.
Self-Diagnostic Items to Result Mode
Self-Diagnostic item Malfunction detecting condition Check route
FR LH SENSOR – 1 Circuit of front LH wheel speed sensor is open.
Wheel speed sensor and
circuit. Refer toBRC-90
RR RH SENSOR – 1 Circuit of rear RH wheel speed sensor is open.
FR RH SENSOR – 1 Circuit of front RH wheel speed sensor is open.
RR LH SENSOR – 1 Circuit of rear LH wheel speed sensor is open.
FR LH SENSOR – 2Front LH wheel speed sensor is shorted or input signal is abnor-
mal.
RR RH SENSOR – 2Rear RH wheel speed sensor is shorted or input signal is abnor-
mal.
FR RH SENSOR – 2Front RH wheel speed sensor is shorted or input signal is abnor-
mal.
RR LH SENSOR – 2Rear LH wheel speed sensor is shorted or input signal is abnor-
mal.
MAIN RELAYDuring the actuator relay operation with OFF, when the actuator
relay turns ON. Or when the control line for the relay is shorted to
the ground.Actuator relay and cir-
cuit. Refer toBRC-102
During the actuator relay operation with ON, when the actuator
relay turns OFF. Or when the control line for the relay is open.
STOP LAMP SW Stop lamp switch circuit is open.Stop lamp switch and cir-
cuit. Refer toBRC-104
PRESS SEN CIRCUITPressure sensor signal line is open or shorted, or pressure sen-
sor is abnormal.Pressure sensor and cir-
cuit. Refer toBRC-93
ST ANGLE SEN CIRCUITNeutral position of the steering angle sensor is dislocated, or the
steering angle sensor is abnormal.Steering angle sensor
and circuit. Refer to
BRC-94
YA W R AT E S E N O RYaw rate sensor is abnormal, or the yaw rate sensor signal line is
open or shorted.Yaw rate/transverse
acceleration sensor and
circuit. Refer toBRC-95

TROUBLE DIAGNOSIS
BRC-81
[ESP/TCS/ABS]
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(note) “ACTUATOR RLY” on the CONSULT-II self-diagnosis results indicates the malfunction of the actuator motor relay and circuit.
DATA MONITOR
For details of the data monitor function, refer to the CONSULT-II Instruction Manual.
Procedure
1. Turn the ignition switch OFF.
2. Connect the CONSULT-II connector to the vehicle-side data link connector.
3. Turn the ignition switch ON.
4. Touch²START²on the display.
5. Touch²ABS²on the display.
CAUTION:
Just after the engine is started, or the ignition switch is
turned ON,²ABS²may not be displayed on the system
selection screen even if²START²is touched. In this case,
start the self-diagnosis again from step 2.
6. Touch²DATA MONITOR².
7. The data monitor item selection screen is displayed, and touch
one of “ECU INPUT SIGNALS” “MAIN SIGNALS”, “CAN DIAG
SUPPORT MNTR” or “SELECTION FROM MENU”. Refer to
BRC-82, "
Data Monitor Items to be Displayed".
8. Touch²START².
9. Screen of data monitor is displayed.
SIDE G-SEN CIRCUITSide G sensor is abnormal, or the signal line of side G sensor is
open or shorted.Yaw rate /Side G sensor
and circuit. Refer to
BRC-95
EMERGENCY BRAKEESP/TCS/ABS control unit malfunction (pressure increase is too
much or too little.)ESP/TCS/ABS control
unit. Refer toBRC-106
CONTROLLER FAILURE ESP/TCS/ABS internal malfunction of control unitESP/TCS/ABS control
unit. Refer toBRC-92
CAN COMM CIRCUIT
lCAN communication line is open or shorted.
lESP/TCS/ABS control unit internal malfunction.
lBattery voltage for EMC is interrupted instantaneously for
Approx. 0.5 seconds or more.Communication circuit
between ESP/TCS/ABS
control unit and units.
Refer toBRC-108
BR FLUID LEVEL LOWBrake fluid level drops or communication line between the ESP/
TCS/ABS control unit and the brake fluid level warning switch is
open or shorted.Communication circuit
between the ESP/TCS/
ABS control unit and the
brake fluid level warning
switch.
Reservoir tank fluid.
Refer toBRC-107
ENGINE SIGNAL 1-4, 6 Major engine components are abnormalEngine system. Refer to
BRC-92
Self-Diagnostic item Malfunction detecting condition Check route
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