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TROUBLE DIAGNOSIS
BRC-109
[ESP/TCS/ABS]
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4.CAN COMMUNICATION SYSTEM CHECK
Check “CAN DIAG SUPPORT MNTR” of the data monitor items.
Is inspection result OK?
>> After printing the monitor items, go to CAN SYSTEM. Refer toLAN-14, "CHECK SHEET".
Component CheckEFS001AR
ESP OFF SWITCH
lDisconnect the ESP OFF switch connector. Check for continuity
between the terminal No. 1 and No. 2.
ESP/TCS/ABS RELAY BOX
Disconnect the relay box connectors. Check for continuity, resis-
tance value, and insulation between any pair of terminals in the relay
box.Normal Abnormal (example)
CAN COMM: OK CAN COMM: OK
CAN CIRC 1: OK CAN CIRC 1: UNKWN
CAN CIRC 2: OK CAN CIRC 2: UNKWN
CAN CIRC 5: OK CAN CIRC 5: UNKWN
CAN CIRC 7: OK CAN CIRC 7: UNKWN
1 - 2 Pressing the switch will make a continuity,
and releasing it will stop the continuity.
SFIA0391E
SFIA0392E
Page 978 of 3066
BRC-110
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
Continuity and resistance
ESP/TCS/ABS ACTUATOR
Take each connector off from the actuator.Then check electric circulation and resistance in between terminals.
CAUTION:
Confirm that the earth of actuator motor is completely removed.
SFIA0393E
SFIA0398E
Page 979 of 3066
TROUBLE DIAGNOSIS
BRC-111
[ESP/TCS/ABS]
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Continuity and resistance
Check the resistance
SFIA0399E
Standard value (W)
Solenoid valves
Outlet ~ Outlet : 6.0 - 10.0
Outlet ~ Inlet : 9.0 - 16.0
Inlet ~ Inlet : 12.0 - 22.0
ESP switch-over solenoid valve
Primary-side 1 - Secondary-side 1 : 12.0 - 22.0
Primary-side 2 - Secondary-side 2 : 6.0 - 10.0
Primary-side 1 - Primary-side 2, Secondary-side 2 : 9.0 - 16.0
Secondary-side 1 - Primary-side 2, Secondary-side 2 : 9.0 - 16.0
Page 980 of 3066
![NISSAN X-TRAIL 2003 Electronic Repair Manual BRC-112
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
Actuator operation check
1. Connect 19 and 21 terminals of actuator to 40 and 41 terminals
of relay box.
2. Measure the motor voltage (No.4 terminal to body ear NISSAN X-TRAIL 2003 Electronic Repair Manual BRC-112
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
Actuator operation check
1. Connect 19 and 21 terminals of actuator to 40 and 41 terminals
of relay box.
2. Measure the motor voltage (No.4 terminal to body ear](/manual-img/5/57402/w960_57402-979.png)
BRC-112
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
Actuator operation check
1. Connect 19 and 21 terminals of actuator to 40 and 41 terminals
of relay box.
2. Measure the motor voltage (No.4 terminal to body earth ) with
oscilloscope. Then check the motor reverse voltage occasioned
time.
The motor reverse voltage occasioned time is more than 0.1
sec.
CAUTION:
lPerform checking of motor relay unit .Then confirm that
relay functions.
lDriving actuator motor is with in 4 sec to prevent heating
up.
lStandard condition of the motor reverse voltage occa-
sioned time is: Battery voltage is 12V. temperature 20°.
when the battery voltage or temperature is lower than the
standard, the motor reverse voltage occasioned time
becomesslightlyshorter.
Symptom 1: ABS Works Frequently.EFS001AS
Inspection procedure
1.INSPECTION START
Check the wheel speed sensor system.
lSensor mounting inspection
lSensor pick-up inspection for iron chips
lSensor rotor inspection (e.g. number of teeth, damaged teeth)
lSensor connector engagement inspection
Is inspection result OK?
YES >> GO TO 2.
NO >> Refer to wheel speed sensor and rotor lines.
2.LOOSENESS INSPECTION
Check the front axle for looseness.
Is inspection result OK?
YES >>BRC-112, "Symptom 2: Unexpected Pedal Action"
NO >> Axle inspection and repair
Symptom 2: Unexpected Pedal ActionEFS001AT
Inspection procedure
1.BRAKE PEDAL STROKE INSPECTION
Check the brake pedal stroke.
Is stroke excessively long?
YES >> Check the bleeding and brake system.
NO >> GO TO 2.
SFIA0400E
Page 981 of 3066
![NISSAN X-TRAIL 2003 Electronic Repair Manual TROUBLE DIAGNOSIS
BRC-113
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2.PEDAL FORCE INSPECTION
Check that the brake is effective with the pedal depressed.
Is the pedal heavy, but effective?
YES >> Normal NISSAN X-TRAIL 2003 Electronic Repair Manual TROUBLE DIAGNOSIS
BRC-113
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2.PEDAL FORCE INSPECTION
Check that the brake is effective with the pedal depressed.
Is the pedal heavy, but effective?
YES >> Normal](/manual-img/5/57402/w960_57402-980.png)
TROUBLE DIAGNOSIS
BRC-113
[ESP/TCS/ABS]
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2.PEDAL FORCE INSPECTION
Check that the brake is effective with the pedal depressed.
Is the pedal heavy, but effective?
YES >> Normal
NO >> GO TO 3.
3.CONNECTOR AND PERFORMANCE INSPECTION
Disconnect the actuator relay unit connector to deactivate the ABS function. Check that the brake is effective.
Is the brake effective?
YES >> GO TO 4.
NO >> Brake line inspection
4.ABS WARNING LAMP INDICATOR INSPECTION
Check that the ABS warning lamp illuminates.
Does the ABS warning lamp illuminate?
YES >> Perform the self-diagnosis.
NO >> GO TO 5.
5.WHEEL SPEED SENSOR INSPECTION
Check the wheel speed sensor system.
lSensor mounting inspection
lSensor pick-up inspection for iron chips
lSensor rotor inspection (e.g. Number of teeth, damaged teeth)
lSensor connector engagement inspection
Is inspection result OK?
YES >> Normal
NO >> Wheel speed sensor and rotor lines repair
Symptom 3: Longer Stopping DistanceEFS001AU
Inspection procedure
1.INSPECTION START
Check that the stopping distance when braking becomes longer only on a snowy or gravel road.
Does the stopping distance when braking become longer only on a snowy or gravel road?
YES >> It may be longer than that of vehicle without ABS.
NO >> GO TO 2.
2.PERFORMANCE CHECK
Disconnect the actuator relay box to deactivate the ABS function.
Is the stopping distance still longer?
YES >>lBrake line air bleeding
lBrake line inspection
NO >> GO TO 3.
3.ABS WARNING LAMP INDICATOR INSPECTION
Check that the ABS warning lamp illuminates.
Does the ABS warning lamp illuminate?
YES >> Perform the self-diagnosis.
NO >> GO TO 4.
Page 982 of 3066
![NISSAN X-TRAIL 2003 Electronic Repair Manual BRC-114
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
4.WHEEL SPEED SENSOR INSPECTION
Check the wheel speed sensor system.
lSensor mounting inspection
lSensor pick-up inspection for iron chips
lSensor rotor inspect NISSAN X-TRAIL 2003 Electronic Repair Manual BRC-114
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
4.WHEEL SPEED SENSOR INSPECTION
Check the wheel speed sensor system.
lSensor mounting inspection
lSensor pick-up inspection for iron chips
lSensor rotor inspect](/manual-img/5/57402/w960_57402-981.png)
BRC-114
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
4.WHEEL SPEED SENSOR INSPECTION
Check the wheel speed sensor system.
lSensor mounting inspection
lSensor pick-up inspection for iron chips
lSensor rotor inspection (e.g. Number of teeth, damaged teeth)
lSensor connector engagement inspection
Is inspection result OK?
YES >> Normal
NO >> Wheel speed sensor and rotor lines repair
Symptom 4: ABS Does Not Work.EF S0 01 AV
Inspection procedure
1.ABS WARNING LAMP INDICATOR INSPECTION
Check that the ABS warning lamp illuminates.
Does the ABS warning lamp illuminate?
YES >> Perform the self-diagnosis.
NO >> GO TO 2.
2.WHEEL SPEED SENSOR INSPECTION
Check the wheel speed sensor system.
lSensor mounting inspection
lSensor pick-up inspection for iron chips
lSensor rotor inspection (e.g. Number of teeth, damaged teeth)
lSensor connector engagement inspection
Is inspection result OK?
YES >> Normal
NO >> Wheel speed sensor and rotor lines repair
Symptom 5: Pedal Vibration and NoiseEFS001AW
Inspection procedure
1.SYMPTOM CHECK
Check the brake system for pedal vibration or noise at the engine start.
Is inspection result OK?
YES >> Perform the self-diagnosis.
NO >> GO TO 2.
2.SYMPTOM CHECK 2
Check the brake system for pedal vibration or noise when the pedal depressed lightly (just put a foot on).
CAUTION:
Under the following driving conditions, the wheel speed will fluctuates, resulting in ABS activation.
lWhen shifting gears
lHigh speed cornering
lWhenagustofwind
Is inspection result OK?
YES >> GO TO 3.
NO >> Normal
Page 983 of 3066
![NISSAN X-TRAIL 2003 Electronic Repair Manual TROUBLE DIAGNOSIS
BRC-115
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3.SYMPTOM CHECK 3
Does the symptom appear during normal braking operation?
CAUTION:
ABS may work in following driving conditions even NISSAN X-TRAIL 2003 Electronic Repair Manual TROUBLE DIAGNOSIS
BRC-115
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3.SYMPTOM CHECK 3
Does the symptom appear during normal braking operation?
CAUTION:
ABS may work in following driving conditions even](/manual-img/5/57402/w960_57402-982.png)
TROUBLE DIAGNOSIS
BRC-115
[ESP/TCS/ABS]
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3.SYMPTOM CHECK 3
Does the symptom appear during normal braking operation?
CAUTION:
ABS may work in following driving conditions even if there is no sudden brake.
lWhen road friction is low.
lHigh speed cornering
lWhenagustofwind
Is inspection result OK?
YES >> GO TO 4.
NO >> Normal
4.SYMPTOM CHECK 4
Check that the symptom is reproduce when the engine speed is increased with the vehicle stopped.
Is inspection result OK?
YES >> GO TO 5.
NO >>
lNormal.
CAUTION:
This symptom may appear with vehicle stopped.
5.SYMPTOM CHECK 5
Check that the symptom is reproduce when any switch of electrical equipment is operated.
Is inspection result OK?
YES >> Check that there are no radio, antenna, and antenna lead-in wires (including wiring) near control
unit.
NO >> GO TO 6.
6.ABS WARNING LAMP INSPECTION
Check that the ABS warning lamp turns on.
Is inspection result OK?
YES >> Perform the self-diagnosis.
NO >> GO TO 7.
7.WHEEL SPEED SENSOR INSPECTION
Check the wheel speed sensor system.
lSensor mounting inspection
lSensor pick-up inspection for iron chips (e.g. Number of teeth, damaged teeth)
lSensor connector engagement inspection
lWheel speed sensor path harness and connector inspection
Is inspection result OK?
YES >> Normal
NO >> Wheel speed sensor and rotor lines repair
Symptom 6: ESP OFF Indicator Lamp Does Not IlluminateEFS001AX
Inspection procedure
1.ESP OFF INDICATOR LAMP INSPECTION
Disconnect the ESP/TCS/ABS control unit connector.
Does the ABS warning lamp and ESP OFF indicator lamp illuminate?
YES >> ESP/TCS/ABS control unit malfunction. Repair or replace the control unit.
NO >> Combination meter system malfunction. Check the combination meter.
Page 984 of 3066
![NISSAN X-TRAIL 2003 Electronic Repair Manual BRC-116
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
Symptom 7: SLIP Indicator Lamp Does Not Illuminate
EFS001AY
Inspection procedure
1.SLIP INDICATOR LAMP BURNED-OUT BULB INSPECTION
Check for continuity between t NISSAN X-TRAIL 2003 Electronic Repair Manual BRC-116
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
Symptom 7: SLIP Indicator Lamp Does Not Illuminate
EFS001AY
Inspection procedure
1.SLIP INDICATOR LAMP BURNED-OUT BULB INSPECTION
Check for continuity between t](/manual-img/5/57402/w960_57402-983.png)
BRC-116
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
Symptom 7: SLIP Indicator Lamp Does Not Illuminate
EFS001AY
Inspection procedure
1.SLIP INDICATOR LAMP BURNED-OUT BULB INSPECTION
Check for continuity between the power supply terminal of meter and terminal of ABS warning lamp.
Is inspection result OK?
OK >> GO TO 2.
NG >> Circuit malfunction in SLIP indicator lamp or combination meter
2.SLIP INDICATOR LAMP POWER CIRCUIT INSPECTION
Disconnect the meter connector. Check that the voltage between the vehicle-side harness terminal and body
ground is battery voltage (Approx. 12V).
Is inspection result OK?
YES >> GO TO 3.
NO >>
lFuse inspection
lInspection for harness and connectors between fuse block and meter
lCheck the power supply circuit (battery and ignition switch circuit).
3.SLIP INDICATOR LAMP HARNESS INSPECTION
1. Disconnect connectors for the ESP/TCS/ABS control unit and meter vehicle-side harness.
2. Check the harness between the meter and the ESP/TCS/ABS control unit for an open/shorted circuit.
Is inspection result OK?
OK >> GO TO 4.
NG >> Repair or replace the disconnected harness.
4.SLIP INDICATOR LAMP CONNECTOR INSPECTION
Check connectors for the ESP/TCS/ABS control unit and meter vehicle-side harness.
Is inspection result OK?
YES >> Connect connectors, and perform the self-diagnosis. The vehicle harness has the intermediate
connector. Refer to the vehicle wiring diagram, always check it.
NG >> Repair or replace the disconnected connector.
Symptom 8: During ESP/TCS/ABS Control, Vehicle Behavior is Jerky.EFS001AZ
Inspection procedure
1.ENGINE SPEED SIGNAL INSPECTION
Perform²DATA MONITOR²with CONSULT-II for the ESP/TCS/ABS control unit.
Is the engine speed at idle 400 rpm or higher?
YES >> Normal
NO >> GO TO 2.
2.SELF-DIAGNOSIS RESULT CHECK 1
Perform the ESP/TCS/ABS control unit self-diagnosis.
Is the self-diagnosis results displayed?
YES >> After checking and repairing the applicable item, perform the ESP/TCS/ABS control unit self-
diagnosis again.
NO >> GO TO 3.