2003 NISSAN X-TRAIL sensor

CAN COMMUNICATION
BRC-59
[ESP/TCS/ABS]
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CAN COMMUNICATIONPFP:23710
System DescriptionEFS001CN
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
FOR M/T MODELS
System diagram
Input/output signal chart
T: Transmit R: Receive
SKIA0885E
Signals ECMSteering wheel
angle sensor4WD control unitESP/ TCS / ABS
control unit
Engine speed signal T R R
Accelerator pedal position signal T R
ESP operation signal R R T
TCS operation signal R R T
ABS operation signal R R T
Stop lamp switch signalRT
Steering wheel angle sensor signal T R
ESP-OFFSW signalRT
Wheel speed sensor signalRT
4WD Mode signalTR

TROUBLE DIAGNOSIS
BRC-71
[ESP/TCS/ABS]
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Control Unit Input/Output Signal StandardEFS001A6
STANDARDS USING A CIRCUIT TESTER AND OSCILLOSCOPE
CAUTION:
Connect the connectors for the ESP/TCS/ABS control unit and actuator, and turn the ignition switch
ON.
SFIA0363E
Measure-
ment termi-
nalMeasuring point Standard value (Note 1)(Reference) Check
items for malfunc-
tion
+–
1
Body
groundPower supply Ignition switch ON Battery voltage (Approx. 12V)
Control unit power
supply circuit
2Actuator motor relay,
actuator relay power
supply and steering
angle sensor power sup-
plyIgnition switch ON Battery voltage (Approx. 12V)
7 Actuator motor relayActuator motor being driven
(²Active test²mode with CON-
SULT-II)Approx. 0V
Actuator motor,
motor relay, and
circuit
Actuator motor while the vehicle
is stoppedBattery voltage (Approx. 12V)
36 Actuator relayWhen actuator relay is active.
(the engine running)Approx. 0V
Actuator relay and
circuit
When actuator relay is inactive.
(Fail-safe, engine starts.)Battery voltage (Approx. 12V)
20 Actuator motor monitorWhen actuator relay is active.
(the engine running)Battery voltage (Approx. 12V)
Actuator motor
monitor circuit
When actuator relay is inactive.
(Fail-safe, engine starts.)Approx. 0V

BRC-72
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
3
Body
groundFront LH wheel outlet
solenoid valve
Solenoid valve activated
(In “active test” mode of CON-
SULT-II) or actuator relay inac-
tive (in fail-safe mode)
When solenoid valve is inactive
and actuator relay active (when
ignition switch ON)Approx. 0V
Battery voltage (Approx. 12V)Solenoid valve and
circuit 4Rear RH wheel outlet
solenoid valve
5Front LH wheel inlet
solenoid valve
6Rear RH wheel inlet
solenoid valve
25Rear LH wheel outlet
solenoid valve
26Front RH wheel inlet
solenoid valve
53Rear LH wheel inlet sole-
noid valve
55Front RH wheel outlet
solenoid valve
49
Body
groundPrimary-side ESP
switch-over solenoid
valve 1 (USV)When switch-over solenoid
valve is active (in “active test”
mode of CONSULT-II)
Or, when actuator relay inactive
(when fail-safe)
When switch-over solenoid
valve is inactive and actuator
relay is active (when ignition
switch ON)Approx. 0V
Battery voltage (Approx. 12V)Switch-over sole-
noid valve and cir-
cuit 50Secondary-side ESP
switch-over solenoid
valve 1 (USV)
52Secondary-side ESP
switch-over solenoid
valve 2 (HSV)
54Primary-side ESP
switch-over solenoid
valve 2 (HSV)
810Front LH wheel speed
sensor
Wheel rotated (Approx. 30 km/h
(19 MPH) (Note 2)Pulse generation
: Approx. 200 HzWheel speed sen-
sor and circuit 11 1 2Rear RH wheel speed
sensor
13 14Rear LH wheel speed
sensor
15 16Front RH wheel speed
sensor
48Body
groundStop lamp signalDepress brake pedal. Battery voltage (Approx. 12V)
Stop lamp switch
and circuit
Release the brake pedal. Approx. 0V Measure-
ment termi-
nalMeasuring point Standard value (Note 1)(Reference) Check
items for malfunc-
tion
+–

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
+–
SFIA0150E
SFIA0151E

TROUBLE DIAGNOSIS
BRC-75
[ESP/TCS/ABS]
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(Note 5): ON/OFF timing of the SLIP indicator 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) and the ESP/TCS function is inactive.
Flashing: ESP/TCS function is active during driving.
STANDARDS WITH CONSULT-II
CAUTION:
The displayed item is the data calculated by the control unit, so it may indicate a normal value even if
an output circuit (harness) is open or shorted.
Data monitor item ContentsData monitor
(Reference) Check items
for malfunction
ConditionReference value in
normal operation
FR RH SENSOR
FR LH SENSOR
RR RH SENSOR
RR LH SENSORWheel speed (Note 1)Vehicle stopped 0 [km/h (MPH)]
Wheel speed sensor cir-
cuit
During drivingAlmost in accor-
dance with the
speedometer dis-
play (within±10%)
ACCEL POS SIGOpen/close condition
of throttle valve (linked
with accelerator pedal)Accelerator pedal not
depressed (ignition switch is
ON)0%Control unit communica-
tion circuit between the
ESP/TCS/ABS control
unit and ECM Accelerator pedal depressed
(ignition switch is ON)0 – 100%
ENG RPMWith the engine run-
ningWith the engine stopped 0rpm
Engine speed signal cir-
cuit
Engine runningAlmost in accor-
dance with
tachometer display
STR ANGLE SIGSteering angle
detected by steering
angle sensorStraight-ahead condition Approx. 0 deg
Steering angle sensor
and circuit
Steering – 720 to 720deg
YAW R AT E S E NYaw rate detected by
yaw rate sensorVehicle stopped Approx. 0 d/s
Yaw rate sensor and cir-
cuit
During driving – 70 to 70d/s
SIDE G-SENSORTransverse accelera-
tion detected by side G
sensorVehicle stopped
Approx. 0 m/s
2
Side G sensor and circuit
During driving
–24.3to24.1m/s2
PRESS SENSORBrake fluid pressure
detected by pressure
sensorWith the ignition switch
turned ON and brake pedal
released.Approx. 0 bar
Pressure sensor and cir-
cuit
With the ignition switch
turned ON and brake pedal
depressed.– 40 to 300bar
BATTERY VOLTBattery voltage sup-
pliedtotheESP/TCS/
ABS control unitIgnition switch ON 10 – 16VESP/TCS/ABS control
unit power supply circuit
and ground circuit
MOTOR RELAYMotor relay
ON/OFF conditionABS not activated. OFF
Motor relay and circuit
ABS activated. ON
ACTUATOR RLYActuator relay
ON/OFF conditionIgnition ON and Vehicle
stopped.OFF
Actuator relay and circuit
Engine running and Vehicle
stopped.ON
STOP LAMP SWOperating status of
brake pedalDepress brake pedal. ON
Stop lamp switch circuit
Release the brake pedal. OFF
PARK BRAKE SW Parking brake statusParking brake activated ON
Parking brake switch cir-
cuit
Parking brake not activated OFF

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 –´–

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

BRC-80
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
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 toBRC-97
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.
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 toBRC-97
. 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
toBRC-100
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 speed sensor input is abnormal.Wheel speed sensor and
circuit. Refer toBRC-90
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 toBRC-104
ST ANGLE SEN SIGNALNeutral position correction of steering angle sensor is not fin-
ished.Neutral position adjust-
ment of steering angle
sensor. Refer toBRC-
106
ST ANG SEN COM CIRCAN communication system or steering angle sensor is abnor-
mal.Steering angle sensor
and CAN communication
circuit. Refer toBRC-108
Self-Diagnostic item Malfunction detecting condition Check route