2003 NISSAN X-TRAIL relay

TROUBLE DIAGNOSIS
BRC-81
[ESP/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
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 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-96
. 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 operating 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-99
During the actuator motor operating 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-89
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-103
ST ANGLE SEN SIGNALNeutral position correction of steering angle sensor is not fin-
ished.Neutral position adjust-
ment of steering angle
sensor. Refer to BRC-
105
ST ANG SEN COM CIRCAN communication system or steering angle sensor is abnor-
mal.Steering angle sensor
and CAN communication
circuit. Refer to BRC-107
SIDE G-SEN CIRCUITSide G sensor is abnormal, or circuit 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 to BRC-105
CONTROLLER FAILURE ESP/TCS/ABS internal malfunction of control unitESP/TCS/ABS control
unit. Refer to BRC-91
CAN COMM CIRCUIT

CAN communication line is open or shorted.

ESP/TCS/ABS control unit internal malfunction.

Battery voltage for ECM is interrupted instantaneously for
Approx. 0.5 seconds or more.Communication circuit
between ESP/TCS/ABS
control unit and units.
Refer to BRC-107
BR FLUID LEVEL LOWBrake fluid level drops or communication line between the ESP/
TCS/ABS control unit and 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-106

ENGINE SIGNAL 1-4, 6 Major engine components are abnormal Engine system. Refer to
BRC-91
Self-Diagnostic item Malfunction detecting condition Check route

TROUBLE DIAGNOSIS
BRC-83
[ESP/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC

BATTERY VOLT
(V )×××Voltage supplied to ESP/TCS/
ABS control unit is displayed.
MOTOR RELAY
(ON/OFF )–××Motor relay signal (ON/OFF) sta-
tus 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) sta-
tus is displayed.
ABS WARN LAMP
(ON/OFF)–××ABS warning lamp (ON/OFF) sta-
tus 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 solenoid
valve (ON/OFF) status is dis-
played.
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 solenoid
valve (ON/OFF) status is dis-
played.
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 solenoid
valve (ON/OFF) status is dis-
played.
RR LH IN SOL
(ON/OFF)–××Rear LH wheel inlet solenoid
valve (ON/OFF) status is dis-
played.
RR LH OUT SOL
(ON/OFF)–××Rear LH wheel outlet solenoid
valve (ON/OFF) status is dis-
played.
M/R OUTPUT
(ON/OFF)––×Motor relay activation signal (ON/
OFF) status is displayed.
FLUID LEV SW
(ON/OFF)×–×Brake fluid level warning switch
(ON/OFF) status is displayed.
SNOW MODE SW
(ON/OFF)––דOFF” is displayed.
BST OPER SIG
(ON/OFF)––דOFF” is displayed.
M MODE SIG
(ON/OFF)––דOFF” is displayed. Data Monitor Item (Unit)Data Monitor item selection
Remarks
ECU INPUT
SIGNALSMAIN
SIGNALSSELECTION
FROM MENU

TROUBLE DIAGNOSIS
BRC-85
[ESP/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC

CAUTION:
The example shown is for front right wheel. The procedure for the other wheels is the same as given
below.

When performing an active test of the ABS function, select the main item for each test item. In addition,
when performing an active test of the ESP/TCS function, select the item menu for each test item.

For ABS solenoid valve, touch “UP”, “KEEP”, “DOWN” on the display screen.
For ABS solenoid valve (ACT), touch “UP”, “ACT UP”, “ACT
KEEP” and confirm that solenoid valves (IN, OUT, USV, HSV)
operate as shown in the table below.
*: ON for 1 to 2 seconds after the touch, and then OFF
ABS Motor
Touch “ON”, “OFF” on the display screen and make sure ABS motor
relay is operating as shown in the table below.
SFIA0591E
OperationABS solenoid valve ABS solenoid valve (ACT)
UP KEEP DOWN UP ACT UP ACT KEEP
IN ABS/VFR OFF ON ON OFF OFF OFF
OUT ABS S/VFR OFF OFF ON* OFF OFF OFF
USV [FR - RL] OFF OFF OFF OFF ON ON
HSV [FR - RL] OFF OFF OFF OFF ON* OFF
Operation ON OFF
MOTOR RELAY ON OFF
ACTUATOR RELAY ON ON
SFIA0593E

TROUBLE DIAGNOSIS
BRC-99
[ESP/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC

5. ACTUATOR SOLENOID INSPECTION
1. Disconnect ESP actuator connector and ESP relay box harness connector.
2. Check the resistance value at ESP actuator.
Is inspection result OK?
YES >> Perform ESP/TCS/ABS control unit self-diagnosis again.
NO >> Replace ESP actuator assembly.
Inspection 8 Actuator Motor, Motor Relay and CircuitEFS001AJ
Inspection procedure
1. SELF-DIAGNOSIS RESULT CHECK 1
Check the self-diagnosis results.
NOTE:
“ACTUATOR RLY” on the CONSULT-II self-diagnosis results indicates the malfunction of the actuator relay
and circuit.
Are
“PUMP MOTOR” and “ACTUATOR RLY” (NOTE) indicated in the self-diagnosis results?
YES >> GO TO 2.
NO >> INSPECTION END.
SFIA2181E
ESP Actuator
(Actuator side)ESP Relay box
(harness connector E57)Resistance
3(W/G)
406.0 – 11Ω
1(G/OR) 6.0 – 11Ω
7(PU/W) 6.0 – 11Ω
5(P) 6.0 – 11Ω
15(R/Y) 3.0 – 5.0Ω
14(Y/G) 3.0 – 5.0Ω
17(GY/R) 3.0 – 5.0Ω
16(LG) 3.0 – 5.0Ω
26(B/W) 6.0 – 11.0Ω
25(R/G) 6.0 – 11.0Ω
28(W/L) 3.0 – 5.0Ω
27(PU)) 3.0 – 5.0Ω
Self-diagnosis results
PUMP MOTOR
ACTUATOR RLY (NOTE)

BRC-100
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS

2. SELF-DIAGNOSIS RESULT CHECK 2
1. Disconnect connectors for ESP/TCS/ABS control unit and the actuator. Securely connect them again.
2. Perform the self-diagnosis again.
Are any self-diagnosis items indicated again?
YES >> GO TO 3.
NO >> Repair or replace the poorly connected connector.
3. ACTUATOR MOTOR, MOTOR RELAY POWER SUPPLY CIRCUIT INSPECTION
1. Disconnect relay box harness connectors.
2. Check the voltage between the harness connector E55 and
body ground.
Is inspection result OK?
YES >> GO TO 4.
NO >>

Check the fuse 50A.

Check for the continuity between battery and relay box terminal No. 10.
4. ACTUATOR MOTOR AND MOTOR RELAY CIRCUIT CHECK
1. Disconnect connectors for ESP/TCS/ABS control unit and the
relay box.
2. Check for continuity between ESP/TCS/ABS control unit, the
relay.
Is inspection result OK?
YES >> GO TO 5.
NO >> Harness malfunction between ESP/TCS/ABS control unit, the ESP relay box.
5. MOTOR RELAY UNIT INSPECTION
Check the motor relay as a unit.
Is inspection result OK?
YES >> Check ESP/TCS/ABS control unit power supply circuit.
NO >> Replace the motor relay.
SFIA2206E
ESP Relay box
(harness connector E55)Body ground Voltage value
10 (W/R) – Battery voltage (approx. 12V)
ESP/TCS/ABS
control unit
(harness
connector E122)ESP relay box
(harness
connector E56and
E57)Continuity
20 (R/B) 4 (R/B) Yes
7 (G/W) 8 (G/W) Yes
SFIA2182E

TROUBLE DIAGNOSIS
BRC-101
[ESP/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC

Inspection 9 Actuator Relay and CircuitEFS001AK
Inspection procedure
1. SELF-DIAGNOSIS RESULT CHECK 1
Check the self-diagnosis results.
Is
“MAIN RELAY” indicated in the self-diagnosis results?
YES >> GO TO 2.
NO >> INSPECTION END.
2. SELF-DIAGNOSIS RESULT CHECK 2
1. Disconnect ESP/TCS/ABS control unit connector. Securely connect them again.
2. Perform ESP/TCS/ABS control unit self-diagnosis again.
Is the same self-diagnosis item indicated?
YES >> GO TO 3.
NO >> Repair or replace the poorly connected connector.
3. ESP/TCS/ABS CONTROL UNIT GROUND CIRCUIT INSPECTION
1. Disconnect ESP/TCS/ABS control unit connector.
2. Check ESP/TCS/ABS control unit ground circuit.
Is inspection result OK?
YES >> GO TO 4.
NO >> Poor connection on ESP/TCS/ABS control unit connector or harness disconnection.
Self-diagnosis results
MAIN RELAY
SFIA2195E
ESP/TCS/ABS control unit
(harness connector E122)Body ground Continuity
28 (B) – Yes
29 (B) – Yes

BRC-102
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS

4. ACTUATOR RELAY POWER SUPPLY CIRCUIT INSPECTION
1. Disconnect the relay box connectors.
2. Check the voltage between the harness connector and body
ground.
Is inspection result OK?
YES >> GO TO 5.
NO >>

Check the fuse 30A.

Check for the continuity between battery and the relay box terminal No. 9. If it is not OK,
replace the fuse or harness.
5. ACTUATOR RELAY POWER CIRCUIT CHECK
1. Disconnect connectors for ESP/TCS/ABS control unit and the
relay box.
2. Check for continuity between ESP/TCS/ABS control unit and
the relay box.
Is inspection result OK?
YES >> GO TO 6.
NO >> The harness disconnection between ESP/TCS/ABS control unit and the relay box.
6. ACTUATOR RELAY UNIT INSPECTION
Check the actuator relay as a unit.
Is inspection result OK?
YES >> Check ESP/TCS/ABS control unit power supply circuit.
NO >> Replace the actuator relay.
SFIA2183E
RELAY BOX
(harness connector E55)Body ground Voltage value
9 (BR) – Battery voltage (approx. 12V)
SFIA2184E
ESP/TCS/ABS control unit
(harness connector E122)ESP relay box
(harness connector E56)Continuity
2 (Y/R) 5 (Y/R) Yes
36 (L/Y) 7 (L/Y) Yes

TROUBLE DIAGNOSIS
BRC-107
[ESP/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC

Inspection 15 CAN Communication Circuit, ESP/TCS/ABS Control Unit and
Steering Angle Sensor
EFS001C6
Inspection procedure
1. CHECK CONNECTOR
1. Turn ignition switch OFF, disconnect the ESP/TCS/ABS control unit connector, and check the terminal for
deformation, disconnection, looseness, and so on. If there is a malfunction, repair or replace the terminal.
2. Reconnect connector to perform self-diagnosis.
Is
“CAN COMM CIRCUIT” or “ST ANG SEN COM CIR” displayed in the self-diagnosis display items?
YES >> Print out the self-diagnostic results, and refer to LAN-4, "CAN Communication Unit" .
NO >> Connector terminal connection is loose, damaged, open, or shorted.
Component CheckEFS001AR
ESP OFF SWITCH

Disconnect the ESP OFF switch connector. Check for continuity
between the terminal No. 1 and No. 2.
ESP RELAY BOX
Disconnect the relay box connectors. Check for continuity, resis-
tance value, and insulation between any pair of terminals in the relay
box. 1 - 2 : Pressing the switch will make a continu-
ity, and releasing it will stop the continuity.
SFIA1822E
SFIA1823E