brake NISSAN X-TRAIL 2001 Service Repair Manual

TROUBLE DIAGNOSIS
BRC-85
[ESP/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
STR ANGLE SIG
(deg)×××–Steering wheel angle
detected by the steering
wheel angle sensor is dis-
played.
YAW RATE SEN
(d/s)×××–Yaw rate detected by the yaw
rate sensor is displayed.
SIDE G-SENSOR
(m/s
2 )×××–Transverse acceleration
detected by the side G sensor
is displayed.
PRESS SENSOR
(bar )×××–Brake fluid pressure detected
by the pressure sensor is dis-
played.
BATTERY VOLT
(V )×××–Voltage supplied to ESP/TCS/
ABS control unit is displayed.
MOTOR RELAY
(ON/OFF )–××–Motor relay signal (ON/OFF)
status is displayed.
ACTUATOR RLY
(ON/OFF )–××–Actuator relay signal (ON/
OFF) status is displayed.
STOP LAMP SW
(ON/OFF)×××–Stop lamp switch (ON/OFF)
status is displayed.
PARK BRAKE SW
(ON/OFF)×××–Parking brake switch (ON/
OFF) status is displayed.
OFF SW
(ON/OFF)×××–ESP OFF switch (ON/OFF)
status is displayed.
ABS WARN LAMP
(ON/OFF)–××–ABS warning lamp (ON/OFF)
status is displayed.
OFF LAMP
(ON/OFF)–××–ESP OFF indicator lamp (ON/
OFF) status is displayed.
SLIP LAMP
(ON/OFF)–××–SLIP indicator lamp (ON/
OFF) status is displayed.
FR LH IN SOL
(ON/OFF)–××–Front LH wheel inlet solenoid
valve (ON/OFF) status is dis-
played.
FR LH OUT SOL
(ON/OFF)–××–Front LH wheel outlet sole-
noid valve (ON/OFF) status is
displayed.
RR RH IN SOL
(ON/OFF)–××–Rear RH wheel inlet solenoid
valve (ON/OFF) status is dis-
played.
RR RH OUT SOL
(ON/OFF)–××–
Rear RH wheel outlet sole-
noid valve (ON/OFF) status is
displayed.
FR RH IN SOL
(ON/OFF)–××–Front RH wheel inlet solenoid
valve (ON/OFF) status is dis-
played.
FR RH OUT SOL
(ON/OFF)–××–Front RH wheel outlet sole-
noid valve (ON/OFF) status is
displayed.
RR LH IN SOL
(ON/OFF)–××–Rear LH wheel inlet solenoid
valve (ON/OFF) status is dis-
played. Data Monitor Item (Unit)Data Monitor item selection
Remarks
ECU INPUT
SIGNALSMAIN
SIGNALSSELECTION
FROM
MENUCAN DIAG
SUPPORT
MNTR

BRC-86
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
RR LH OUT SOL
(ON/OFF)–××–Rear LH wheel outlet solenoid
valve (ON/OFF) status is dis-
played.
USV [FL-RR]
(ON/OFF)––×–Primary-side switch-over
solenoid valve (ON/OFF) sta-
tus is displayed. (USV)
USV [FR-RL]
(ON/OFF)––×–Secondary-side switch-over
solenoid valve (ON/OFF) sta-
tus is displayed. (USV)
HSV [FL-RR]
(ON/OFF)––×–Primary-side switch-over
solenoid valve (ON/OFF) sta-
tus is displayed. (HSV)
HSV [FR-RL]
(ON/OFF)––×–Secondary-side switch-over
solenoid valve (ON/OFF) sta-
tus is displayed. (HSV)
V/R OUTPUT
(ON/OFF)––×–Actuator relay operation sig-
nal (ON/OFF) status is dis-
played.
M/R OUTPUT
(ON/OFF)––×–Motor relay activation signal
(ON/OFF) status is displayed.
VDC FAIL SIG
(ON/OFF)––×–ESP fail signal (ON/OFF) sta-
tus is displayed.
TCS FAIL SIG
(ON/OFF)––×–TCS fail signal (ON/OFF) sta-
tus is displayed.
ABS FAIL SIG
(ON/OFF)––×–ABS fail signal (ON/OFF) sta-
tus is displayed.
EBD FAIL SIG
(ON/OFF)––×–EBD fail signal (ON/OFF) sta-
tus is displayed.
FLUID LEV SW
(ON/OFF)––×–Brake fluid level warning
switch (ON/OFF) status is dis-
played.
SNOW MODE SW
(ON/OFF)––×– “OFF” is displayed.
BST OPER SIG
(ON/OFF)––×– “OFF” is displayed.
CAN COMM
(OK/NG)
–––×CAN communication signal
(OK/NG) status is displayed.
CAN CIRC 1
(ON/ UNKWN)–––×
CAN communication signal
(OK/UNKWN) status is dis-
played. CAN CIEC 2
(OK/ UNKWN)–––×
CAN CIRC 5
(OK/ UNKWN)–––×
CAN CIRC 7
(ON / UNKWN)–––×
M MODE SIG
(ON/OFF)––×– “OFF” is displayed.
OD OFF SW
(ON/OFF)––×– “OFF” is displayed.
EBD SIGNAL
(ON/OFF)––×–EBD operation (ON/OFF) sta-
tus is displayed. Data Monitor Item (Unit)Data Monitor item selection
Remarks
ECU INPUT
SIGNALSMAIN
SIGNALSSELECTION
FROM
MENUCAN DIAG
SUPPORT
MNTR

TROUBLE DIAGNOSIS
BRC-87
[ESP/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
×: Applicable
–: Not applicable
ACTIVE TEST
Procedure
CAUTION:
●Do not perform active test while driving the vehicle.
●Make sure that completely bleed air from the brake system.
●The active test cannot be performed with the ABS warning lamp on.
1. Connect the CONSULT-II connector to the vehicle-side data link connector and start the engine.
2. Touch “START” on the display.
3. Touch “ABS” and “ACTIVE TEST”.
4. The test item selection screen is displayed.
5. Touch necessary test item.
ABS SIGNAL
(ON/OFF)––×–ABS operation (ON/OFF) sta-
tus is displayed.
TCS SIGNAL
(ON/OFF)––×–TCS operation (ON/OFF) sta-
tus is displayed.
VDC SIGNAL
(ON/OFF)––×–ESP operation (ON/OFF) sta-
tus is displayed. Data Monitor Item (Unit)Data Monitor item selection
Remarks
ECU INPUT
SIGNALSMAIN
SIGNALSSELECTION
FROM
MENUCAN DIAG
SUPPORT
MNTR
SFIA0364E
SFIA0365E
SFIA0366E

TROUBLE DIAGNOSIS
BRC-89
[ESP/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
*: ON for 1 to 2 seconds after the touch, and then OFF
NOTE:
●If the active test is performed with the brake pedal depressed, the pedal stroke may be changed. This is a
normal condition.
●“TEST STOP” is displayed 6 seconds after the operation start.
●After “TEST STOP” is displayed, to perform the test again, repeat the step 6 of the operation procedure.
ESP OFF Indicator Lamp
Touch “ON” and “OFF” on the “VDC WARNING LAMP” screen to check that ESP OFF indicator lamp operates
as follows.
NOTE:
During the active test when “OFF” on the “VDC WARNING LAMP” screen is touched, all of the ESP OFF indi-
cator lamp, SLIP indicator lamp, and ABS warning lamp flash once. This is not abnormal.
Motor Relay and Actuator Relay
Touch “ON” and “OFF” on the “ABS MOTOR” screen to check that the motor relay and the actuator relay oper-
ate as follows.
NOTE:
●If the active test is performed with the brake pedal depressed, the pedal stroke may be changed. This is a
normal condition.
●“TEST STOP” is displayed after 10 seconds from the operation start.
SLIP Indicator Lamp
Touch “ON” and “OFF” on the “SLIP LAMP” screen to check that the SLIP indicator lamp operates as follows.
NOTE:
During the active test when “OFF” on the “SLIP LAMP” screen is touched, all of the ESP OFF indicator lamp,
SLIP indicator lamp, and ABS warning lamp flash once. This is not abnormal.
RR LH SOL
RR LH ABS SOLE-
NOID (ACT)RR LH IN SOL OFF ON ON OFF OFF OFF
RR LH OUT SOL OFF OFF ON* OFF OFF OFF
USV [FR-RL] OFF OFF OFF OFF ON ON
HSV [FR-RL] OFF OFF OFF OFF ON* OFF
FRONT SOLENOID
FRONT ABS SOLE-
NOID (ACT)FR RH IN SOL OFF ON ON OFF OFF OFF
FR RH OUT SOL OFF OFF ON OFF OFF OFF
FR LH IN SOL OFF ON ON OFF OFF OFF
FR LH OUT SOL OFF OFF ON OFF OFF OFF
REAR SOLENOID
REAR ABS SOLE-
NOID (ACT)RR RH IN SOL OFF ON ON OFF OFF OFF
RR RH OUT SOL OFF OFF ON OFF OFF OFF
RR LH IN SOL OFF ON ON OFF OFF OFF
RR LH OUT SOL OFF OFF ON OFF OFF OFF OperationWithout “(ACT)” With “(ACT)”
UP KEEP DOWN UPACTUA-
TOR UPACTUA-
TOR KEEP
Operation ON OFF
VDC WARNING LAMP ON (Lamp ON) OFF (Lamp OFF)
Operation ON OFF
MOTOR RELAY ON OFF
ACTUATOR RELAY ON ON
Operation ON OFF
SLIP LAMP ON (Lamp ON) OFF (Lamp OFF)

BRC-90
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
ABS Warning Lamp
Touch “ON” and “OFF”on the “ABS WARNING LAMP” screen to check that the ABS warning lamp operates as
follows.
NOTE:
During the active test when “OFF” on the “ABS WARNING LAMP” screen is touched, all of the ESP OFF indi-
cator lamp, SLIP indicator lamp, and ABS warning lamp flash once. This is not abnormal.
For Correct and Quick DiagnosisEFS001A8
PRECAUTIONS FOR TROUBLE DIAGNOSIS
●Before performing the trouble diagnosis, always read the GI-3, "PRECAUTIONS" to confirm the general
precautions.
●After replacement of ESP/TCS/ABS control unit, steering wheel angle sensor, steering parts, suspension
parts, or tires, and adjustment of alignment, always adjust the neutral position of steering wheel angle
sensor before driving.
●When the ESP/TCS/ABS control unit is replaced, check that the label on the computer unit is identical
color.
●After completing the trouble diagnosis, always erase the malfunctioning memory. Refer to BRC-81, "Pro-
cedure" .
●When inspection of the continuity or voltage between units is performed, check the connector terminals for
disconnection, looseness, bend, or collapse. If any malfunction is detected, repair or replace the applica-
ble part.
●Intermittent problems may be caused by a malfunction on harness, connector, or terminal. Move the har-
nesses, harness connectors, or terminals by hand to make sure that there is no contact malfunction.
●If a circuit tester is used for the check, be careful not to forcibly extend any connector terminal.
●For self-diagnosis, active test, and work support of ESP/TCS/ABS control unit with CONSULT-II, stop and
connect CONSULT-II and select “ABS”.
●CONSULT-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.
●While the self-diagnosis results of CONSULT-II shows a malfunction, if CONSULT-II active test is per-
formed, an engine system malfunction may be indicated. In this case, start the engine to resume the nor-
mal screen.
●ESP/TCS/ABS system electronically controls the brake operation and engine output. The following symp-
toms may be caused by the normal operations.
Operation ON OFF
ABS WARNING LAMP ON (Lamp ON) OFF (Lamp OFF)
Symptom Symptom description Result
Motor operation noiseDuring ESP, TCS, or ABS operation, sometimes a faint noise can be
heard. This is a motor operation noise in the ESP actuator.
Normal
Just after the engine starts, the motor operating noise may be heard.
This is a normal status of the system operation check.
System operation check
noiseWhen the engine starts, a“click” noise may be heard from the engine
compartment. This is a normal status of the system operation check.Normal

TROUBLE DIAGNOSIS
BRC-91
[ESP/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
ABS Warning Lamp, ESP OFF Indicator Lamp, SLIP Indicator Lamp ON/OFF Timing
×:ON –: Lamp OFF
×: Applicable
–: Not applicable
Basic InspectionEFS001A9
PRELIMINARY CHECK 1: (BRAKE FLUID LEVEL AND LEAK INSPECTION)
1. Check the fluid level in the brake reservoir tank. If the fluid level is low, refill the brake fluid.
2. Check the area around the brake piping, ESP actuator for leaks. If a leak or oozing is detected, check as
follows:
●If the connections at the ESP actuator are loose, tighten the piping to the specified torque. Then check
again for leaks, and make sure that there is no fluid leak.
●If the flare nuts at the connections and the threads of the ESP actuator are damaged, replace the dam-
aged parts. Then check again for leaks, and make sure that there is no fluid leak.
●If a leak or oozing is detected on other parts than the ESP actuator connections, wipe the applicable
part with a clean cloth. Then check again for leaks, and if there is still a leak or oozing, replace the dam-
aged part.
ESP/TCS operation
(SLIP lamp ON)When the vehicle is passing through a road where the surface friction
coefficient varies or the wheel speed changes suddenly by downshifting
or depressing of the accelerator pedal fully, TCS may be activated tem-
porarily.
Normal
Cancel the ESP/TCS
function for the
inspection on a chas-
sis dynamometer. Before the speedometer inspection, turn ESP OFF switch off to cancel
the ESP/TCS function.
When the accelerator pedal is depressed on a chassis dynamometer,
the vehicle speed will not increase. This is not malfunction, because
TCS is activated by the wheel speed difference between front and rear.
The warning lamp may also illuminate to show “sensor system failure” in
this case. This is not malfunction either, because the stationary front
wheels are detected. Restart the engine, and drive the vehicle at 30 km/
h or higher to check that the warning lamp no longer illuminates.
ABS operation (Longer stop-
ping distance)The stopping distance may be longer for the vehicles with ABS when the
vehicle is driver on snowy and rough road. When driving on the road like
that, slow down the speed.Normal
Sluggish feelDepending on road circumstances, the driver may have a sluggish feel.
This is not abnormal, because the optimum traction has the highest pri-
ority (safety first) by TCS operation. Sometimes the driver has a slight
sluggish feel against the substantial accelerator pedal operation.Normal Symptom Symptom description Result
Condition ABS warning lampESP OFF
indicator lampSLIP indicator lamp Remarks
When the ignition switch is
OFF––– —
After the ignition switch is
turned ON
For Approx. 0.5 seconds×××—
Ignition switch ON
Approx. 0.5 seconds later––– —
When the ESP OFF switch
turns ON (ESP/TCS function
OFF).–×–Lamp goes off after Approx. 2
seconds when the engine re-start.
ESP/TCS/ABS
malfunction×××—
××–When the ESP/TCS/ABS control
unit is abnormal (power supply or
ground malfunction).
When the ESP/TCS ism
abnormal.–××—

BRC-92
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
●If a leak or oozing is detected on the ESP actuator body, wipe the applicable part with a clean cloth.
Then check again for leaks, and if there is still a leak or oozing, replace the ESP actuator body.
CAUTION:
Do not disassemble the actuator body.
3. Check the brake disc rotor and pads.
PRELIMINARY CHECK 2: (INSPECTION FOR LOOSE POWER SUPPLY TERMINAL)
Check the battery for looseness on the battery positive/negative terminals and ground connection. If loose-
ness is detected, tighten the piping to the specified torque. Check that the battery voltage does not drop and
the alternator is normal.
PRELIMINARY CHECK 3: (INSPECTION FOR ABS WARNING LAMP, ESP OFF INDICATOR
LAMP, AND SLIP INDICATOR LAMP)
1. Check that the ABS warning lamp is ON for Approx. 0.5 seconds when the ignition switch is turned ON. If
it does not turn on, check the ABS warning lamp and the circuit, and the combination meter.
2. Check that ESP OFF indicator lamp is ON for Approx. 0.5 seconds when the ignition switch is turned ON.
If it does not turn ON, check the ESP OFF indicator lamp and the circuit, and the combination meter.
3. Check that the SLIP indicator lamp is ON for Approx. 0.5 seconds when the ignition switch is turned ON. If
it does not turn ON, check the SLIP indicator lamp and the circuit.
4. With the engine running, check the ESP OFF indicator lamp turns ON and OFF when the ESP OFF
switch turns ON and OFF. If it dose not operate in accordance with the switch, check the ESP OFF switch
and the circuit.
5. Check that the ESP OFF indicator lamp turns OFF after Approx. 2 seconds delay when the ESP OFF
switch turned ON (The ESP/TCS system was not operated). If the ESP OFF indicator lamp does not turn
OFF in 10 seconds from the engine start, perform the self-diagnosis of ESP/TCS/ABS control unit.
Inspection 1 Wheel Sensor and CircuitEFS001AB
Inspection procedure
1. SELF-DIAGNOSIS RESULT CHECK 1
Check the self-diagnosis results.
Are any self-diagnosis result items above indicated?
>> GO TO 2.
2. CHECK THE CONNECTOR
Remove connectors of the wheel sensor which is malfunctioning and the ESP/TCS/ABS control unit. Check
whether the deformation of terminal, or incorporate connection of connectors. Then, connect connectors. In
addition, check if the wheel sensor cable is damaged due to friction.
Does ABS warning lamp is out when driving 30 km/h (19 MPH) for Approx. One minute?
YES >> Check is completed.
NO >> GO TO 3.
Self-diagnosis results
CONSULT-II indication item
ABS SENSOR [ABNORMAL SIGNAL]
FR RH SENSOR – 1
FR RH SENSOR – 2
FR LH SENSOR – 1
FR LH SENSOR – 2
RR RH SENSOR – 1
RR RH SENSOR – 2
RR LH SENSOR – 1
RR LH SENSOR – 2

BRC-96
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
4. PRESSURE SENSOR INSPECTION
Check the “PRESS SENSOR” value in “DATA MONITOR”.
Is inspection result OK?
YES >> Perform the ESP/TCS/ABS control unit self-diagnosis again.
NO >> Pressure sensor malfunction. Replace the ESP actuator (with the pressure sensor).
Inspection 5 Steering wheel Angle Sensor and the Circuit between Steering
Wheel Angle Sensor and ESP/TCS/ABS Control Unit.
EFS001AF
Inspection procedure
1. SELF-DIAGNOSIS RESULT CHECK 1
Check the self-diagnosis results.
Perform inspection 15.
Refer to BRC-110, "
Inspection 15 CAN Communication Circuit, ESP/TCS/ABS Control Unit and Steering
Wheel Angle Sensor" .
Is
“ST ANG SEN CIRCUIT” indicated in the self-diagnosis results.
>> GO TO 2.
2. SELF-DIAGNOSIS RESULT CHECK 2
1. Repair or replace the poorly connected connector
–Check the connector housing for disconnect, loose, bent and collapse terminals
If any malfunction are detected, repair or replace the applicable part.
2. Perform the ESP/TCS/ABS control unit self-diagnosis again.
Is inspection result OK?
YES >> Inspection END
NO >> GO TO 3.Condition PRESS SENSOR (Data monitor)
Brake pedal depressed Positive value
Brake pedal released Approx. 0 bar
Self-diagnosis results
CONSULT-II indication item
ST ANG SEN CIRCUIT

BRC-106
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
Inspection 10 Stop Lamp Switch and Circuit
EFS001AL
Inspection procedure
1. SELF-DIAGNOSIS RESULT CHECK
Check the self-diagnosis results.
Is
“STOP LAMP SW” indicated in the self-diagnosis results?
>> GO TO 2.
2. STOP LAMP INSPECTION
1. Disconnect connectors for the stop lamp switch and the ESP/TCS/ABS control unit.
2. Securely connect them again.
3. Start the engine.
4. Repeat depressing the brake pedal carefully several times, then perform the self-diagnosis again.
Is the same self-diagnosis item indicated?
YES >> GO TO 3.
NO >> Repair or replace the poorly connected connector.
3. STOP LAMP SWITCH CIRCUIT CHECK
1. Disconnect connectors for the stop lamp switch and the ESP/
TCS/ABS control unit.
2. Check for continuity between the stop lamp switch (vehicle-side
connector M12) and the ESP/TCS/ABS control unit (vehicle-
side connector B111).
Is inspection result OK?
YES >> Perform the ESP/TCS/ABS control unit self-diagnosis again.
NO >> Harness disconnection between the ESP/TCS/ABS control unit and the stop lamp switch.
Inspection 11 ESP/TCS/ABS Control Unit Power Supply CircuitEFS001AM
Inspection procedure
1. SELF-DIAGNOSIS RESULT CHECK 1
Check the self-diagnosis results.
Is
“BATTERY VOLTTAGE [ABNORMAL]” indicated in the self-diagnosis results?
>> GO TO 2.
Self-diagnosis results
CONSUL-II indication item
STOP LAMP SW
SFIA0921E
ESP/TCS/ABS control unit
(Vehicle-side connector B111)STOP LAMP SW
(Vehicle-side connector M12)Continuity
48 (P) 2 (P) Yes
Self-diagnosis results
CONSUL-II indication item
BATTERY VOLTTAGE [ABNORMAL]

BRC-108
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
5. ESP/TCS/ABS CONTROL UNIT POWER SUPPLY CIRCUIT INSPECTION 2
1. Check the fuse 10A.
2. Check for continuity between the battery positive terminal and
the ESP/TCS/ABS control unit (vehicle-side connector B111).
Is inspection result OK?
YES >> Check the battery for a loose terminal and low voltage or the alternator for abnormality.
NO >>
●Replace the fuse 10A.
●Harness disconnection
Inspection 12 When “EMERGENCY BRAKE” is indicated in the Self-Diagnosis
Results
EFS001AO
Inspection procedure
1. SELF-DIAGNOSIS RESULT CHECK
Check the self-diagnosis results.
When any items other than “EMERGENCY BRAKE” is displayed in the self-diagnosis results, follow the
instructions below.
CAUTION:
“EMERGENCY BRAKE” is indicated when the control unit itself is detected internal error. If this dis-
play item was indicated, replace the control unit.
Is
“EMERGENCY BRAKE” is indicated in the self-diagnosis results?
>> Replace the ESP/TCS/ABS control unit, and perform the self-diagnosis again.
Inspection 13 When “ST ANG SEN SIGNAL” is Indicated in the Self-Diagnosis
Results
EFS001AP
Inspection procedure
1. SELF-DIAGNOSIS RESULT CHECK 1
Check the self-diagnosis results.
When any items other than
“ST ANGLE SEN SIGNAL” is displayed in the self-diagnosis results:
YES >> Check and repair the applicable items. Perform the self-diagnosis again.
NO >> Perform the steering wheel angle sensor neutral position adjustment. GO TO 2.
SFIA0924E
ESP/TCS/ABS control unit
(Vehicle-side connector B111)Battery terminal Continuity
1 (G/R) positive Yes
Self-diagnosis results
CONSUL-II indication item
EMERGENCY BRAKE
Self-diagnosis results
CONSUL-II indication item
ST ANGLE SEN SIGNAL