change wheel NISSAN X-TRAIL 2003 Electronic Repair Manual

REAR DISC BRAKE
BR-31
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2. Using a dial indicator, check run out.
CAUTION:
Before measuring, make sure that the axle endplay is 0 mm
(0 in).
3. If the run out is outside the limit, find the minimum run out point
by shifting the mounting positions of the disc rotor and wheel hub by one hole.
Thickness Inspection
Using a micrometer, check thickness of the disc rotor. If the thick-
ness is outside the standard, replace the disc rotor.
ASSEMBLY
CAUTION:
When assembling, do not use rubber grease.
1. Apply rubber lubricant to piston seals, and install them to cylin-
der body.
CAUTION:
Do not reuse piston seals.
2. Apply brake fluid to piston boots. Cover piston end with piston
boot. Install cylinder side lip on piston boot properly into groove
on cylinder body.
CAUTION:
Do not reuse piston boot.
3. Press piston into cylinder body by hand. Assemble piston side
lip on piston boot properly into groove on the piston.
CAUTION:
Press piston evenly and change pressing point to prevent
cylinder inner wall from being rubbed.Measurement point:
At a point 10 mm (0.39 in) from the outer
edge of the disc.
Run out limit:
0.07 mm (0.0028 in) or less
BRA0013D
Standard thickness : 16.0 mm (0.630 in)
Wear limit : 14.0 mm (0.551 in)
Maximum uneven wear (measured at 8 positions):
0.02 mm (0.0008 in) or less
SBR020B
SFIA0156E
SFIA0157E

BRC-2
ACTUATOR RELAY) TURNS ON/OFF FRE-
QUENTLY ............................................................ 42
ABS warning lamp does not illuminate. (ABS warn-
ing lamp does not come on when the ignition switch
is turned ON.) ......................................................... 42
ABS warning lamp illuminates with ignition ON, but
does not illuminates after a few seconds. (ABS
warning lamp has illuminated.) ............................... 42
4WD warning lamp does not illuminate with ignition
ON. ......................................................................... 43
4WD warning lamp does not go out several seconds
after engine is started. (Drive mode indicator lamp
goes out.) ................................................................ 43
Heavy tight-corner braking symptom occurs when
the vehicle is driven in AUTO mode and the steering
wheel is turned fully to either side after the engine
is started. ................................................................ 44
Drive modes cannot be switched after engine is
started. .................................................................... 45
Wheel driving, 4WD warning lamp flashes rapidly.
(When it flashes for Approx. one minute, then does
not illuminate.) ........................................................ 45
Wheel driving, 4WD warning lamp flashes slowly.
(When it continues to illuminate until engine turns
OFF.) ....................................................................... 45
Vehicle does not enter 4WD mode even though
4WD warning lamp is off. ........................................ 46
Tight-corner braking symptom occurs when the
vehicle is started in AUTO mode (4WD warning lamp
remain OFF). .......................................................... 46
E-TS actuator relay (4WD solenoid actuator relay)
turns ON/OFF frequently. ........................................ 46
Inspection of drive mode change-over switch path... 47
WHEEL SENSORS ................................................... 48
Removal and Installation ........................................ 48
G-SENSOR (4WD MODEL ONLY) ............................ 49
Removal and Installation ........................................ 49
SENSOR ROTOR ...................................................... 50
Removal and Installation ........................................ 50
REMOVAL ........................................................... 50
INSTALLATION .................................................... 50
ACTUATOR ............................................................... 51
Removal and Installation ........................................ 51
REMOVAL ........................................................... 51
INSTALLATION .................................................... 51
ESP/TCS/ABS
PRECAUTIONS ......................................................... 52
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ................................................................. 52
Precautions for Brake System ................................ 52
Precautions for Brake Control ................................ 52
Precautions for CAN System .................................. 53
FOR INSPECTION .............................................. 53
FOR HARNESS REPAIR .................................... 53ON-VEHICLE SERVICE ............................................54
Adjustment of Neutral Position of Steering Angle
Sensor .....................................................................54
GENERAL INFORMATION .......................................56
Fail-Safe ..................................................................56
ABS SYSTEM ......................................................56
ESP/TCS SYSTEM ..............................................56
Hydraulic Circuit ......................................................56
ABS Functions ........................................................56
TCS Functions ........................................................57
ESP Functions ........................................................57
System Diagram .....................................................58
CAN COMMUNICATION ...........................................59
System Description .................................................59
FOR M/T MODELS ..............................................59
TROUBLE DIAGNOSIS ............................................60
How to Perform Trouble Diagnoses for Quick and
Accurate Repair ......................................................60
INTRODUCTION .................................................60
WORK FLOW ......................................................61
ASKING COMPLAINTS .......................................62
EXAMPLE OF DIAGNOSIS SHEET ....................62
Component Parts and Harness Connector Location... 63
Schematic ...............................................................64
Wiring Diagram —ESP/TCS/ABS— .....................65
Control Unit Input/Output Signal Standard ..............71
STANDARDS USING A CIRCUIT TESTER AND
OSCILLOSCOPE .................................................71
STANDARDS WITH CONSULT-II ........................75
Functions of CONSULT-II .......................................77
CONSULT-II MAINLY FUNCTION APPLICA-
TION TO ESP/TCS/ABS ......................................77
SELF-DIAGNOSIS ...............................................78
DATA MONITOR ..................................................81
ACTIVE TEST ......................................................84
For Correct and Quick Diagnosis ............................88
PRECAUTIONS FOR TROUBLE DIAGNOSIS ... 88
Basic Inspection ......................................................89
PRELIMINARY CHECK 1: (BRAKE FLUID
LEVEL AND LEAK INSPECTION) .......................89
PRELIMINARY CHECK 2: (INSPECTION FOR
LOOSE POWER SUPPLY TERMINAL) ...............89
PRELIMINARY CHECK 3: (INSPECTION FOR
ABS WARNING LAMP, ESP OFF INDICATOR
LAMP, AND SLIP INDICATOR LAMP) .................89
Inspection 1 Wheel Speed Sensor and Circuit .......90
Inspection 2 Engine System ...................................92
Inspection 3 ESP/TCS/ABS Control Unit System ...92
Inspection 4 Pressure Sensor and the Circuit
between Pressure Sensor and ESP/TCS/ABS Con-
trol Unit. ...................................................................93
Inspection 5 Steering Angle Sensor and the Circuit
between Steering Angle Sensor and ESP/TCS/ABS
Control Unit. ............................................................94
Inspection 6 Yaw Rate Sensor/ Side G sensor and
the Circuit between Yaw Rate Sensor/ Side G sen-
sor and ESP/TCS/ABS Control Unit. ......................95
Inspection 7 Solenoid Valve, ESP Switch-over Sole-

BRC-4
[4WD/ABS]
PRECAUTIONS
[4WD/ABS]PRECAUTIONSPFP:00001
Precautions for brake systemEFS001B6
lRecommended fluid is brake fluid “DOT 3 ”or “DOT 4”.
lNever reuse drained brake fluid.
lBe careful not to splash brake fluid on painted areas.
lTo clean or wash all parts of master cylinder, disc brake caliper and wheel cylinder, use clean brake fluid.
lNever use mineral oils such as gasoline or kerosene. They will ruin rubber parts of the hydraulic system.
lUse flare nut wrench when removing and installing brake tube.
lAlways torque brake lines when installing.
lBurnish the brake contact surfaces after refinishing or replacing
drums or rotors, after replacing pads or linings, or if a soft pedal
occurs at very low mileage. Refer toBR-10, "
Brake Burnishing
Procedure".
lBefore working, turn OFF ignition switch. Disconnect connectors
for ABS actuator and control module or battery terminals.
WAR NIN G:
lClean brake pads and shoes with a waste cloth, then wipe
with a dust collector.
Precautions for brake controlEFS001B7
lIf malfunction is indicated by 4WD warning lamp and/or ABS warning lamp, collect necessary information
from customer (what symptoms are present under what conditions). Find out possible causes before start-
ing service. Besides electrical system inspection, check operation of ABS actuator.
lIf malfunction is detected, proceed to trouble diagnosis after checking tire pressure and tire wear.
lStopping distance or steering stability may be deteriorated by the following conditions. Tire size and type
are in improper combination. Brake pads are not Nissan genuine parts.
lFitting tires of different size on vehicle can be cause of longitudinal vibration. Always use tires of the same
size and brand. Exchange front and rear tires on the following conditions: Longitudinal vibration occurs in
vehicle with tires of the same size and brand. After replacement, perform trouble diagnosis. 1580|None
l4WD/ABS function may have a failure or error under following condition: There is radio, antenna, or
antenna lead-in wire (including wiring) near control module.
lIf aftermarket parts (e.g. Car stereo equipment, CD player) have been installed, check electrical har-
nesses for pinches, open, and improper wiring.
SBR686C

BRC-18
[4WD/ABS]
TROUBLE DIAGNOSIS
Trouble Diagnosis Chart by Symptom
EFS001BF
When ABS and 4WD warning lamps illuminate, perform self-diagnosis.
Symptom Condition Check items Reference page
When ignition switch is turned ON,
drive mode indicator lamp does not illu-
minate for Approx. 1 second (drive
mode lamp check)IGN-ON
lBlown drive mode indicator lamp bulb
lBlown fuse between ignition and drive mode
indicator lamp
lOpen circuit of wiring between ignition and
drive mode indicator lampBRC-42
ABS warning lamp does not illuminate
with ignition ON. (ABS warning lamp
check)IGN-ON
lBlown ABS warning lamp bulb
lBlown fuse between ignition and ABS warning
lamp.
lOpen circuit of wiring between ignition and
ABS warning lamp.
lMalfunction in ABS systemBRC-42
ABS warning lamp illuminates with
ignition ON, but does not illuminates
after a few seconds. (ABS warning
lamp has not illuminated.)IGN-ONl4WD/ABS control unit connector discon-
nected
lMalfunction in ABS systemBRC-42
4WD warning lamp does not illuminate
with ignition ON.IGN-ON
lBlown 4WD warning lamp bulb
lBlown fuse between ignition and 4WD warn-
ing lamp
lOpen circuit in wire between ignition and 4WD
warning lamp
lOpen circuit in wire between 4WD warning
lamp and 4WD actuator relay
lDisconnected 4WD actuator relay
lOpen circuit in wire between 4WD actuator
relay and body groundBRC-43
4WD warning lamp does not go out
several seconds after engine is started.
(Drive mode indicator lamp goes out.)Engine runningl4WD/ABS control unit connector discon-
nected
lMalfunction present in 4WD systemBRC-43
Heavy tight-corner braking symptom
occurs when vehicle is driven in the fol-
lowing conditions: AUTO mode and
steering wheel is turned fully to either
sides after engine is started (Note 1,
Note 2).lEngine run-
ning
lAUTO mode
lSteering
wheel fully
turned
lOperation is not in AUTO mode (in 2WD or
LOCK mode).
lThrottle position signal error
lMechanical malfunction of electronically con-
trolled coupling
lMalfunction present in 4WD systemBRC-44
Drive modes cannot be switched after
engine is started.Engine running
lDrive mode change-over switch is discon-
nected.
lOpen circuit between drive mode change-over
switch and 4WD /ABS control unit
lOpen circuit between drive mode change-over
switch and body groundBRC-45
Vehicle running, 4WD warning lamp
flashes rapidly. (When it flashes for
Approx. One minute, then does not illu-
minate.) Rapid flashing: Two times
flashing per 1 secondEngine running
(to other than
2WD mode)Protection function was activated due to heavy
load to electronically controlled coupling. (4WD
system is not malfunctioning.)BRC-45

TROUBLE DIAGNOSIS
BRC-21
[4WD/ABS]
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BRC
CAUTION:
1. If a circuit tester for measuring voltage is used for the check, do not forcibly extend any connector
terminals.
CAUTION:
2. 4WD warning lamp ON/OFF timing
CAUTION:
3. ABS warning lamp ON/OFF timing
CAUTION:
4. Unit name is indicated by the name used in circuit diagram (4WD solenoid valve). However, it is “E-
TS solenoid” in CONSULT-II data.
Specifications defined by CONSULT
102
Body ground
4WD solenoid valve
(E-TS solenoid
valve)At vehicle stop engine idlingBattery voltage (Approx.
12V)4WD actuator relay
solenoid valve and
harness
18 4WD actuator relay At vehicle stop engine idling 2 V or lower4WD actuator relay
and harness
2
4G - sensor power
supply
At ignition switch ON (vehicle horizontal
stop condition)Approx. 8 V
G -sensor and har-
ness
32Longitudinal G -
sensorApprox. 2.5V
41 G -sensor ground Approx. 0V
22Throttle position
sensorWide open throttle
Closed throttleApprox. 4.0 V
Approx. 0.5 VThrottle position
sensor and har-
ness
24Parking brake
switchIn parking position
In other than parking position-Parking brake
switch and harness
26Drive mode
change-over switch
AUTODrive mode change-over switch: 2WD
Drive mode change-over switch: other
than 2WDSW ON: Approx. 0 V
SW OFF: Approx. 5 VDrive mode
change-over switch
and path
27Drive mode
change-over switch
LOCKDrive mode change-over switch: LOCK
Drive mode change-over switch: other
than LOCKSW ON: Approx. 0 V
SW OFF: Approx. 5 VDrive mode
change-over switch
and path
ON: When ignition switch is turned ON (before engine starts) or when malfunction is
detected
OFF: After engine is started (When the system is in normal condition)
ON: When ignition switch is turned ON (before engine starts) or when malfunction is
detected
OFF: After engine is started (When the system is in normal condition)
Terminal No.
Location Standard (note 1)(Note) Check
points when result
was malfunctioning +-
Items to be monitored ContentsData monitor
(Reference)
Check points when result
was malfunctioning ConditionReference values in
normal operation
Wheel speed sensor
FR,
FL, RR, RL (km/h)Vehicle wheel speedWhen the vehicle is
stopped0km/h
Wheel speed sensor and
harness
While driving (note:1)Almost in accordance
with speedometer dis-
play (within±10%)
LONGITUDINAL G-
SENSOR (4WD mod-
els)G -sensor operating
conditionWith vehicle stopped
on flat road.plus; 0.15 G G -sensor and harness

TROUBLE DIAGNOSIS
BRC-23
[4WD/ABS]
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CAUTION:
1. Check air pressure of tire under normal condition.
2. ABS warning lamp ON/OFF timing
CONSULT-II FunctionsEFS001BH
CONSULT-II FUNCTION APPLICATION TABLE
4WD MODE MONI-
TOROutput condition of
drive mode indicator
lamp signalEngine running, vehi-
cle stoppedUsing drive mode
change-over switchDrive mode indicator lamp
and path
IMPROPER SIZE
TIRE MONITOR (mm)Improper size tire
installed condition- 0-4,4-8Front/Rear tire size differ-
ence, wear condition
PARKING BRAKE
SWITCH (ON/OFF)Parking brake switch
operating conditionParking brake
depressedON
Parking brake switch and
harness
Parking brake not
depressedOFF
METER OUTPUT
(km/h)Output condition of
vehicle speed for
speedometerWheel stopped 0 km/h
Speed meter and harness
Vehicle runningAlmost in accordance
with the wheel speed
sensor display
ON: When ignition switch is turned ON (before engine starts) or when malfunction is
detected
OFF: After engine is started (When the system is in normal condition)
Item Self-diagnosis Data monitor Active test
FR RH SENSOR´´-
FR LH SENSOR [OPEN]´´-
RR RH SENSOR´´-
RR LH SENSOR´´-
Speed sensor´--
Stop lamp switch -´-
FR RH IN ABS SOL´´´
FR RH OUT ABS SOL´´´
FR LH IN ABS SOL´´´
FR LH OUT ABS SOL´´´
RR RH IN ABS SOL´´´
RR RH OUT ABS SOL´´´
RR LH IN ABS SOL´´´
RR LH OUT ABS SOL´´´
ABS ACTUATOR RELAY´´-
ABS MOTOR RELAY´´´
ABS warning lamp -´-
Battery voltage´´-
Control module´--
ABS MOTOR´-´
Longitudinal G -sensor´´-
4WD solenoid valve´´´
4WD actuator relay -´-
Engine speed signal -´-
Throttle position sensor´´-

TROUBLE DIAGNOSIS
BRC-41
[4WD/ABS]
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BRC
4WD MODES CANNOT BE SWITCHED AFTER ENGINE IS STARTED
1.INSPECTION USING 4WD MODE CHANGE-OVER SWITCH
lDrive modes cannot be switched after the engine is started.
lOn data monitor screen of the CONSULT-II, check 4WD mode switch.
lCheck if the display changes from ## to 2WD mode when the 2WD switch is pressed.
lCheck if the display changes from ## to AUTO mode when the AUTO switch is pressed.
lCheck if the display changes from ## to LOCK mode when the LOCK switch is pressed.
OK or NG
OK >> No malfunction detected.
NG >>
lCONSULT-II display does not change from ## when the 2WD switch is pressed. Check harness
of the 2WD switch.
lCONSULT-II display does not change from ## when the AUTO switch is pressed. Check har-
ness of the 2WD switch and LOCK switch.
lCONSULT-II display does not change from ## when the LOCK switch is pressed. Check har-
ness of the LOCK switch.
lPerform 4WD mode change-over switch inspection.
WHILE DRIVING, 4WD WARNING LAMP FLASHES RAPIDLY. (WHEN IT FLASHERS FOR
APPROX. ONE MINUTE, THEN DOES NOT ILLUMINATE.)
lWhile driving, 4WD warning lamp flashes rapidly. (When it flashes for Approx. One minute, then does not
illuminate.)
Rapid flashing: 2 times/second
This phenomenon protects drivetrain parts when a heavy load is applied to the electronically controlled
coupling and multiple disc clutch temperature increases. It is not a malfunction.
When the difference of revolution speed by or with the front and rear wheel with AUTO mode, the shift
switch occasionally changes to LOCK mode automatically. This is not a malfunction.
When the difference of revolution speed between the front and rear wheel with AUTO mode, the shift
switch occasionally changes to LOCK mode automatically. This is not a malfunction.
WHILE DRIVING, 4WD WARNING LAMP FLASHES SLOWLY. (WHEN IT CONTINUES TO ILLU-
MINATE UNTIL ENGINE TURNS OFF.)
1. Check using the data monitor function of the CONSULT-II.
lPerform inspection with the data monitor function of the CONSULT-II.
lCheck if the value of IMPROPER SIZE TIRE MONITOR is 8 mm (0.31 in) or more.
lStop the engine. Restart the engine and drive the vehicle at 20 km/h (12 MPH) or faster for approxi-
mately 200 seconds. Confirm the 4WD warning lamp flashes slowly.
(Check if the value of IMPROPER SIZE TIRE MONITOR is 8 mm (0.31 in) or more.)
When the tire size is normal, the value of IMPROPER SIZE TIRE MONITOR will change from 8 mm
(0.31 in) or more to 0 to 4 mm (0 to 0.16 in) (normal condition) after the vehicle is driven 20 km/h (12
MPH) or faster for approximately 5 seconds.
2. Tire inspection
lInspection of tire pressure
lWear condition
lCheck size of the front and rear tires. (No excessive difference should be observed.) Refer toGI-46,
"Wheels&Tires"
VEHICLE DOES NOT ENTER 4WD MODE EVEN THOUGH 4WD WARNING LAMP IS OFF.
1. Check using the data monitor function of the CONSULT-II.
Perform inspection by the data monitor function of the CONSULT-II.
–Check if the vehicle operation changes to 2WD, AUTO, and LOCK modes.
–Check current supplied to the 4WD solenoid valve in AUTO mode.
Accelerator pedal not depressed: Approx. 0 A
Accelerator pedal depressed: Approx. 2.8 A

TROUBLE DIAGNOSIS
BRC-45
[4WD/ABS]
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BRC
3.INSPECTION USING DRIVE MODE CHANGE-OVER SWITCH
lOn data monitor screen of the CONSULT, check 4WD mode switch.
lCheck if the display changes from ## to 2WD mode when the 2WD switch is pressed.
lCheck if the display changes from ## to AUTO mode when the AUTO switch is pressed.
lCheck if the display changes from ## to LOCK mode when the LOCK switch is pressed.
Is inspection result OK?
YES >> No malfunction detected.
NO >>
lNot in AUTO mode. (In 2WD or LOCK mode)
Countermeasure: Slightly depress the accelerator pedal and check that the operation mode
changes to LOCK mode.
lCheck path between drive mode switch and 4WD/ABS control unit E122 terminal No.27 (BR).
(AUTO mode is not available because a malfunction is present in the 2WD mode harness.)
NOTICE:
Mechanism of drive mode change-over
l2WD mode: Operation changes to 2WD mode when 4WD/ABS control unit connector terminal
No. 27 is shorted to ground.
lAUTO mode: Operation changes to AUTO mode when 4WD/ABS control unit connector termi-
nals No. 27 and No. 26 were shorted to ground.
lLOCK mode: Operation changes to LOCK mode when 4WD/ABS control unit connector E122
terminal No. 26 (L) is shorted to ground.
Drive modes cannot be switched after engine is started.EFS001BU
1.INSPECTION USING DRIVE MODE CHANGE-OVER SWITCH
lDrive modes cannot be switched after the engine is started.
lOn data monitor screen of the CONSULT, check 4WD mode switch.
lCheck if the display changes from ## to 2WD mode when the 2WD switch is pressed.
lCheck if the display changes from ## to AUTO mode when the AUTO switch is pressed.
lCheck if the display changes from ## to LOCK mode when the LOCK switch is pressed.
Is inspection result OK?
YES >> No malfunction detected.
NO >>
lCONSULT-II display does not change from ## when the 2WD switch is pressed. Check harness
of the 2WD switch.
lCONSULT-II display does not change from ## when the AUTO switch is pressed. Check har-
ness of the 2WD switch and LOCK switch.
lCONSULT-II display does not change from ## when the LOCK switch is pressed. Check har-
ness of the LOCK switch.
lPerform drive mode change-over switch inspection.
Wheel driving, 4WD warning lamp flashes rapidly. (When it flashes for Approx.
one minute, then does not illuminate.)
EFS001BV
lWheel driving, 4WD warning lamp flashes rapidly. (When it flashes for Approx. 1 minute, then does not
illuminate.)
Rapid flashing: 2 times/second
This phenomenon protects drivetrain parts when a heavy load is applied to the electronically controlled
coupling and multiple disc clutch temperature increases. It is not a malfunction.
Wheel driving, 4WD warning lamp flashes slowly. (When it continues to illumi-
nate until engine turns OFF.)
EFS001BW
1. Check using the data monitor function of the CONSULT.
lPerform inspection with the data monitor function of the CONSULT.
lCheck if the value of IMPROPER SIZE TIRE MONITOR is 8 mm or more.

BRC-46
[4WD/ABS]
TROUBLE DIAGNOSIS
lStop the engine. Restart the engine and drive the vehicle at 20 km/h or faster for approximately 200
seconds. Confirm the 4WD warning lamp flashes slowly.
(Check if the value of IMPROPER SIZE TIRE MONITOR is 8 mm or more.)
When the tire size is normal, the value of IMPROPER SIZE TIRE MONITOR will change from 8 mm or
more to 0 - 4 mm (normal condition) after the vehicle is driven 20 km/h or faster for approximately 5
seconds.
2. Tire inspection
lInspection of tire air pressure
lWear condition
lCheck size of the front and rear tires. (No excessive difference should be observed.) Refer toGI-46,
"Wheels&Tire s"
Vehicle does not enter 4WD mode even though 4WD warning lamp is off.EFS001BX
1. Check using the data monitor function of the CONSULT.
Perform inspection by the data monitor function of the CONSULT.
–Check if the vehicle operation changes to 2WD, AUTO, and LOCK modes.
–Check current supplied to the E-TS solenoid valve in AUTO mode.
2. Check using the active test function of the CONSULT.
Using active test mode of CONSULT, supply current to the E-TS solenoid valve and check that the monitor
current becomes close to this supply current.
lThe 4WD/ABS control unit is normal when the difference between E-TS solenoid valve current and the
monitor current is within±10%.
It is necessary to inspect the electronically controlled coupling assembly.
Tight-corner braking symptom occurs when the vehicle is started in AUTO
mode (4WD warning lamp remain OFF).
EFS001BY
1.THROTTLE POSITION SENSOR AND HARNESS INSPECTION
Check accelerator pedal stroke.
Is inspection result OK?
YES >> Perform self-diagnosis again.
NO >> Malfunctioning throttle position sensor harness
E-TS actuator relay (4WD solenoid actuator relay) turns ON/OFF frequently.EFS001BZ
1.SELF-DIAGNOSIS RESULT IS E-TS ACTUATOR RELAY (4WD ACTUATOR RELAY) ON ERROR
AND OFF ERROR.
Is self-diagnosis result [ON error and OFF error]?
Is inspection result OK?
YES >> GO TO 2.
NO >> Repair or replace as necessary.
2.E-TS ACTUATOR RELAY (4WD SOLENOID ACTUATOR RELAY) AND HARNESS INSPECTION
Is self-diagnosis result [ON error and OFF error]?
Is inspection result OK?
YES >> Perform self-diagnosis again.
NO >> Malfunctioning E-TS actuator relay (4WD solenoid actuator relay) harnessAccelerator pedal not depressed: Approx. 0 A
Accelerator pedal depressed: Approx. 2.8 A
Example) Monitor value becomes Approx. 1 A for E-TS solenoid current 1 A setting.

BRC-88
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
For Correct and Quick Diagnosis
EFS001A8
PRECAUTIONS FOR TROUBLE DIAGNOSIS
lBefore performing the trouble diagnosis, always read theGI-3, "PRECAUTIONS"to confirm the general
precautions.
lAfter replacement of ESP/TCS/ABS control unit, steering angle sensor, steering parts, suspension parts,
or tires, and adjustment of alignment, always adjust the neutral position of steering angle sensor before
driving.
lWhen the ESP/TCS/ABS control unit is replaced, check that the label on the computer unit is identical
color.
lAfter completing the trouble diagnosis, always erase the malfunctioning memory.BRC-77, "Functions of
CONSULT-II"
lWhen 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.
lIntermittent 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.
lIf a circuit tester is used for the check, be careful not to forcibly extend any connector terminal.
lFor self-diagnosis, active test, and work support of ESP/TCS/ABS control unit with CONSULT-II, stop and
connect CONSULT-II and select²ABS².
lCONSULT-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.
lWhile 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.
lESP/TCS/ABS system electronically controls the brake operation and engine output. The following symp-
toms may be caused by the normal operations.
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/TCS/ABS 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, a²click²noise may be heard from the engine
compartment. This is a normal status of the system operation check.Normal
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 show²sensor system failure²in
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