Page 1753 of 2103

Caution,
Turn the ignition switch off before
t h e
If the scan tool is disconnected while the ignition
switch
the diagnostic trouble codes will be memorized!
the warning’ light’ may
1. Jack up the vehicle and support: the vehicle with rigid;
racks at the specified jack-up place the
wheels which ‘are checked on. .therollers of the braking
force tester.
Caution
The roller of the braking force tester the
shouldbedry during
2. When parking!
the rear brakes, stop
them.,
2.Release the parking brake, and feel
torque) ‘each road wheel. .
using “the force tester, take “a
‘brake drag
Turn the ignition key to the
scan tool as the
lever is in neutral, start
1. At this time, the ABS
‘2.
mode and the
When the ABS has’
function, the scan tool actuator testing canbe
used.
5. Use the scan tool to force-drive the actuator.
6.Turn the wheel by check the change in
force when the brake is -depressed.
using the braking force tester, depress the brake
until braking force is at the following values,
and check to be sure that the braking force changes
to the brake drag force inspected in step 2 when the
actuator is force-driven.
Front wheel
Rear wheel
The result should be as shown in the following diagram.
7.If the result of inspection is abnormal, correct ac cording
to the “Diagnostic Table.”__ .
,
__
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Page 1754 of 2103
Diagnosis Table
l
l Depressed
l Released
L o c k
Operation
(1) Depress brake pedal to
lock wheel.
(2) Using the scan tool, select the wheel to be
checked and force the
actuator to operate.
(3)Turn the selected wheel
manually to check the
change of brake force.
Normal
Brake force
released for 6
secondsafter
locking.
Abnormal Probable cause
Remedy
does not Clogged brakeCheck and clean
lock when brake line other thanbrake line
pedal is HU
pressed.
Clogged hydrau-
Replace HU
circuit in HUassembly
force is
releasedIncorrect HU
brake tube
connection Connect
correctly
HU solenoid
Replace HU
valve not assembly
tioning correctly
8. After inspection, disconnect the scan tool immed iately
after
the ignition switch to OFF.
SOLENOID VALVE CHECK
Measure the resistance between terminals.
Standard value:
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Page 1755 of 2103
On-vehicle Service,
I
Screwdriver
II
M O T O R
Connect the battery and check to be sure that thesound
of the hydraulic unit motor operating can heard.
.
power should be than
1 second.
ABS MOTOR RELAY AND
1. Remove the splash shield. to 42
Fender.)
2. Remove the relay box mounting, bolts,
, ,
3. Insert the tip of a screwdriver into the space
the hydraulic unit and the relay box
to open the tab at then
4.Take out all of the relays from the relay. box
the continuity between the when
supplied and when power
.
.
ABS Motor Relay
W h e n n o c u r r e n t , , ,
B e t w e e n
W h e n c u r r e n t f l o w s
b e t w e e n t e r m i n a l s 0
_ _ __
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Page 1756 of 2103

ABS On-vehicle Service
ABS-ECU
14
32
A B S V a l v e R e l a y
When no current
flows
Between
Between
Between terminals continuity
When current flows Between terminals No
between terminals
B e t w e e n
0
POWER RELAY CHECK
Remove the instrument under cover the
relay.
voltageTerminal No. .
34
Power is not supplied00
Power is supplied.
REMEDY FOR A FLAT ,35200350072
When booster cables are used to start the engine wh en the’
battery is completely flat and then the vehicle is
driven without waiting for the battery to
some extent, the engine may misfire, and driving not
be possible.
This happens because ABS consumes a great of’
current for its self-check function; the remedy is to either
allow the battery to recharge sufficiently, or to r emove the,
fusible link for ABS circuit, thus disabling the an ti-skid brake
system.
The ABS warning light will illuminate the fusible
(for is removes.
After the battery has sufficiently charged, install the fusible
link (for ABS) and restart the engine; then check t o be sure
the ABS warning light is not illuminated.
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Page 1757 of 2103
ABS Wheel Sensor
WHEEL SPEED SENSOR
REMOVAL AND
Operationl Splash Shield Removal only,
(Refer to GROUP 42 Fender.)
FrontRear
1
1
3
Front wheel speed sensor removal
steps
1. Clip
2. Front wheel speed sensor
Front
rotor removal
3. Drive shaft
A B S r o t o o
(Refer to GROUP 26 Drive
Shaft.)
wheel speed sensor removal
4. Rear wheel s e n s o r
Rear ABS rotor removal steps
5. Drive shaft ABS rotoo
(Refer to GROUP 27 Drive
Shaft.)
NOTEThe ABS rotor is integrated with the drive shaft an d is notdisassembled.
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Page 1758 of 2103
ABS W h e e l . , . . . ,
Front Rear
ed
ce
Revision
I
FRONT WHEEL SPEED
S P E E D S E N S O R
The clearance between the wheel speed sensor
rotor’s toothed surface is not but the
distance between the the
rotor’s toothed surface.. .
Standard value: 28.2-28.5 mm (1.11-1.12 in.)
INSPECTION
WHEEL SPEED SENSOR CHECK
Refer to GROUP Wheel Speed Sensor Check.
WHEEL SPEED SENSOR INSULATION
(1) Remove all the wheel sensor,
and then
between (1)
(2) and body of the speed sensor.
S t a n d a r d v a l u e : 1 0 0
or
(2) If the wheel speed
the standard value replace speed
sensor.
ABS ROTOR CHECK
Check whether ABS rotor is broken or deformed, and, if so,
replace the ABS rotor.
Page 1759 of 2103
G-SENSOR
REMOVAL AND INSTALLATION
CautionDo not drop the G-sensor or subject it to shocks.
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Page 1760 of 2103
ABS G-Sensor
INSPECTION
G - S E N S O R C H E C K
(1) Disconnect the connector the
special tool (test,; harness set:,, the
terminals the connector.
(2) Turn the ignition
the following output voltage.
of
B e t w e e n
a n d ( 3 ) .
Standard value: 2.4-2.6
(3) With the special tool still connected, secure t he G-sensor
so that the FRONT mark on the sensor mounting surfa ce
is facing straight down, take a reading of the
following output
Between terminals (2) and (3)
Standard value:
(4)If the voltage outside the standard value; after checking
to be sure that there is no abnormality in the powe r supply
-and earth, wires, replace the G-sensor.
Revision