2001 NISSAN X-TRAIL App sensor

BRC-82
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
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 sensor is open.
Wheel sensor and cir-
cuit. Refer to BRC-92
RR RH SENSOR – 1 Circuit of rear RH wheel sensor is open.
FR RH SENSOR – 1 Circuit of front RH wheel sensor is open.
RR LH SENSOR – 1 Circuit of rear LH wheel sensor is open.
FR LH SENSOR – 2 Front LH wheel sensor is shorted or input signal is abnormal.
RR RH SENSOR – 2 Rear RH wheel sensor is shorted or input signal is abnormal.
FR RH SENSOR – 2 Front RH wheel sensor is shorted or input signal is abnormal.
RR LH SENSOR – 2 Rear LH wheel sensor is shorted or input signal is abnormal.
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 to BRC-104
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 to BRC-106
PRESS SEN CIRCUIT Pressure sensor signal line is open or shorted, or pressure sen-
sor is abnormal.Pressure sensor and cir-
cuit. Refer to BRC-95
ST ANGLE SEN CIRCUIT Neutral position of the steering wheel angle sensor is dislocated,
or the steering wheel angle sensor is abnormal.Steering wheel angle
sensor and circuit. Refer
to BRC-96
YAW RATE SENOR Yaw rate sensor is abnormal, or the yaw rate sensor signal line is
open or shorted.Yaw rate/transverse
acceleration sensor and
circuit. Refer to BRC-98
FR LH IN ABS SOLCircuit of the front LH wheel inlet solenoid valve is open or
shorted, or the control line is open or shorted to the power supply
or the ground.
Solenoid valve and cir-
cuit. Refer to BRC-99
FR LH OUT ABS SOLCircuit of the front LH wheel outlet solenoid valve is open or
shorted, or the control line is open or shorted to the power supply
or the ground.
RR RH IN ABS SOLCircuit of the rear RH wheel inlet solenoid valve is open or
shorted, or the control line is open or shorted to the power supply
or the ground.
RR RH OUT ABS SOLCircuit of the rear RH wheel outlet solenoid valve is open or
shorted, or the control line is open or shorted to the power supply
or the ground.
FR RH IN ABS SOLCircuit of the front RH wheel inlet solenoid valve is open or
shorted, or the control line is open or shorted to the power supply
or the ground.
FR RH OUT ABS SOLCircuit of the front RH wheel outlet solenoid valve is open or
shorted, or the control line is open or shorted to the power supply
or the ground.
RR LH IN ABS SOLCircuit of the rear LH wheel inlet solenoid valve is open or
shorted, or the control line is open or shorted to the power supply
or the ground.
RR LH OUT ABS SOLCircuit of the rear LH wheel outlet solenoid valve is open or
shorted, or the control line is open or shorted to the power supply
or the ground.

TROUBLE DIAGNOSIS
BRC-83
[ESP/TCS/ABS]
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BRC
(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.
USV LINE [FL-RR]ESP switch-over solenoid valve 1 on the primary side is open cir-
cuit or shorted, or the control line is open or shorted to the power
supply or the ground.
ESP switch-over sole-
noid valve and circuit.
Refer to BRC-99
. USV LINE [FR-RL]ESP switch-over solenoid valve 1 on the secondary side is open
circuit or shorted, or the control line is open or shorted to the
power supply or the ground.
HSV LINE [FL-RR]ESP switch-over solenoid valve 2 on the primary side is open cir-
cuit or shorted, or the control line is open or shorted to the power
supply or the ground.
HSV LINE [FR-RL]ESP switch-over solenoid valve 2 on the secondary side is open
circuit or shorted, or the control line is open or shorted to the
power supply or the ground.
PUMP MOTOR
ACTUATOR RLY (note) During the actuator motor operation with ON, when the actuator
motor turns OFF. Or when the control line for actuator motor relay
is open.Actuator motor, motor
relay, and circuit. Refer
to BRC-102
During the actuator motor operation with OFF, when the actuator
motor turns ON. Or when the control line for relay is shorted to
ground.
ABS SENSOR
[ABNORMAL SIGNAL]Wheel sensor input is abnormal.Wheel sensor and cir-
cuit. Refer to BRC-92
BATTERY VOLTAGE
[ABNORMAL]ESP/TCS/ABS control unit battery voltage is too low.ESP/TCS/ABS control
unit battery voltage cir-
cuit and ground circuit.
Refer to BRC-106
ST ANGLE SEN SIGNALNeutral position correction of steering wheel angle sensor is not
finished.Neutral position adjust-
ment of steering wheel
angle sensor. Refer to
BRC-108
ST ANG SEN COM CIRCAN communication system or steering wheel angle sensor is
abnormal.Steering wheel angle
sensor and CAN com-
munication circuit. Refer
to BRC-110
SIDE G-SEN CIRCUITSide G sensor is abnormal, or the signal line of side G sensor is
open or shorted.Yaw rate and Side G
sensor and circuit. Refer
to BRC-98
EMERGENCY BRAKEESP/TCS/ABS control unit malfunction (pressure increase is too
much or too little.)ESP/TCS/ABS control
unit. Refer to BRC-108
CONTROLLER FAILURE ESP/TCS/ABS internal malfunction of control unitESP/TCS/ABS control
unit. Refer to BRC-94
CAN COMM CIRCUIT
●CAN communication line is open or shorted.
●ESP/TCS/ABS control unit internal malfunction.
●Battery voltage for EMC is interrupted instantaneously for
Approx. 0.5 seconds or more.Communication circuit
between ESP/TCS/ABS
control unit and units.
Refer to BRC-110
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 to BRC-109
ENGINE SIGNAL 1-4, 6 Major engine components are abnormal Engine system. Refer to
BRC-94
Self-Diagnostic item Malfunction detecting condition Check route

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]
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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

TROUBLE DIAGNOSIS
BRC-97
[ESP/TCS/ABS]
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BRC
3.STEERING WHEEL ANGLE SENSOR CIRCUIT CHECK
1. Disconnect the ESP/TCS/ABS control unit connector and the steering wheel angle sensor connector.
2. Check for continuity between the ESP/TCS/ABS control unit
(vehicle-side connector B111) and the steering wheel angle sen-
sor (vehicle-side connector M81).
3. Check for continuity between the steering wheel angle sensor
and ground.
Is inspection result OK?
YES >> GO TO 4.
NO >> Repair or replace the disconnected harness.
4.DATA MONITOR CHECK
Perform the “STR ANGLE SIG” value in “DATA MONITOR” and check that it is in normal condition.
Is inspection result OK?
YES >> Perform the ESP/TCS/ABS control unit self-diagnosis again.
NO >> Replace the spiral cable (with the steering wheel angle sensor) and adjust the neutral position of
steering wheel angle sensor. BRC-57, "
Adjustment of Neutral Position of Steering Wheel Angle
Sensor" .
SFIA0899E
ESP/TCS/ABS control unit
(Vehicle-side connector B111)Steering wheel angle sensor
(Vehicle-side connector M81)Continuity
2 (Y/R) 3 (Y/R) Yes
SFIA0898E
Steering wheel angle sensor
(Vehicle-side connector M81)ground Continuity
2 (B) — Yes
Steering condition STR ANGLE SIG (Data monitor)
Straight-ahead – 5 deg to + 5 deg
Tun the wheel to the right by 90°Approx. + 90 deg
Tun the wheel to the left by 90°Approx. – 90 deg

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