NISSAN X-TRAIL 2003 Electronic Repair Manual

TROUBLE DIAGNOSIS
BRC-63
[ESP/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Component Parts and Harness Connector LocationEFS001A3
SFIA0338E

BRC-64
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
Schematic
EFS001A4
TFWA0008E

TROUBLE DIAGNOSIS
BRC-65
[ESP/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Wiring Diagram —ESP/TCS/ABS—EFS001A5
TFWA0010E

BRC-66
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
TFWA0011E

TROUBLE DIAGNOSIS
BRC-67
[ESP/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
TFWA0012E

BRC-68
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
TFWA0013E

TROUBLE DIAGNOSIS
BRC-69
[ESP/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
TFWA0014E

BRC-70
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
TFWA0015E

TROUBLE DIAGNOSIS
BRC-71
[ESP/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
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
+–