1998 TOYOTA LAND CRUISER brake
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BR-42
- BRAKEHYDRAULIC BRAKE BOOSTER
2178 Author: Date:
2004 LAND CRUISER (RM1071U)
To protect the solenoids, TOYOTA hand-held tester turns
OFF automatically for 2 sec. after every solenoid has
been turned ON.
(e) Inspect the front ABS switching solenoid operation.
(1) Select ºSA1º and ºSA2º on the TOYOTA hand-held
tester.
(2) With ºSA1º and ºSA2º turned ON simultaneously
with the TOYOTA hand-held tester, depress the
brake pedal with stable force and check that the
pedal cannot be depressed.
HINT:
To protect the solenoids, TOYOTA hand-held tester turns OFF
automatically for 2 sec. after every solenoid has been turned
ON.
If the pedal can be depressed, replace the hydraulic brake
booster.
NOTICE:
When operating it continuously, set the interval of more
than 20 sec.
(3) Once, release the brake pedal.
(4) When the solenoids are OFF, after depressing the
brake pedal again and check that the brake pedal
can be depressed.
If the pedal cannot be depressed, replace the hydraulic brake
booster.
(f) Inspect the front ABS solenoid operation.
(1) Select ºSFRHº and ºSFLHº on the TOYOTA hand-
held tester.
(2) With ºSFRHº and ºSFLHº turned ON simultaneously
with the TOYOTA hand-held tester, depress the
brake pedal with stable force and check that the
brake pedal cannot be depressed.
HINT:
To protect the solenoids, TOYOTA hand-held tester turns OFF
automatically for 2 sec. after every solenoid has been turned
ON.
If the pedal can be depressed, replace the hydraulic brake
booster.
(3) Once, release the brake pedal when the solenoids
are OFF, check that the brake pedal can be de-
pressed.
If the pedal cannot be depressed, replace the hydraulic brake
booster.
(4) Once, release the brake pedal. After depressing
and holding the brake pedal with stable force, turn
the SFRH and SFRR solenoids ON simultaneously.
HINT:
To protect the solenoids, TOYOTA hand-held tester turns OFF
automatically for 2 sec. after every solenoid has been turned
ON.
Page 552 of 3115
- BRAKEHYDRAULIC BRAKE BOOSTER
BR-43
2179 Author: Date:
2004 LAND CRUISER (RM1071U)
(5) When the solenoids are OFF, check that the brake
pedal can be depressed.
If the pedal cannot be depressed, replace the hydraulic brake
booster.
(6) Once, release the brake pedal. After depressing
and holding the brake pedal with stable force, turn
the SFLH and SFLR solenoids ON simultaneously.
HINT:
To protect the solenoids, TOYOTA hand-held tester turns OFF
automatically for 2 sec. after every solenoid has been turned
ON.
(7) Once release the brake pedal when the solenoids
are OFF, check that the brake pedal can be de-
pressed.
If the pedal cannot be depressed, replace the hydraulic brake
booster.
(g) Jack up and support the vehicle.
(h) Release the parking brake lever.
(i) Inspect the rear ABS solenoid.
(1) Select the ºSRHº on the TOYOTA hand-held tester.
(2) Turn the ºSRHº ON with the TOYOTA hand-held
tester and depress the brake pedal with stable
force, and rotate the right rear wheel by hand and
check it.
HINT:
To protect the solenoids, TOYOTA hand-held tester turns
OFF automatically for 2 sec. after every solenoid has
been turned ON.
When rotating the wheel fast, the fail-safe function is acti-
vated and judgement cannot be made properly. So rotate
the wheel as slowly as possible.
When solenoid is OFF, the wheel might stop temporarily.
However if the wheel rotates again, the function works
normally.
If the rear wheels stop, replace the hydraulic brake booster.
(3) Once, release the brake pedal and turn the ºSRHº
OFF, after depressing the brake pedal with stable
force and stop the rear right wheel by hand and
check it.
If the rear wheel rotate, replace the hydraulic brake booster.
(4) Depress the pedal with stable force, then turn the
ºSRHº and ºSRRº ON simultaneously.
(5) When the solenoids are ON, rotate the rear wheel
by hand and check it.
HINT:
To protect the solenoids, TOYOTA hand-held tester turns
OFF automatically for 2 sec. after every solenoid has
been turned ON.
Page 553 of 3115
I24672
TOYOTA Hand-held Tester
BR-44
- BRAKEHYDRAULIC BRAKE BOOSTER
2180 Author: Date:
2004 LAND CRUISER (RM1071U)
When rotating the wheel fast, the fail-safe function is acti-
vated and judgement cannot be made properly. So rotate
the wheel as slowly as possible.
(j) Lower the vehicle.
(k) Disconnect the TOYOTA hand-held tester.
3. w/ ABS & TRAC & VSC only,
In case of using TOYOTA hand-held tester:
INSPECT HYDRAULIC BRAKE BOOSTER OPERA-
TION
(a) Inspect the battery positive voltage.
Battery positive voltage: 10 - 14 V
(b) Turn the ignition switch OFF, depress the brake pedal
more than 40 times.
HINT:
When a pressure in power supply system is released, reaction
force becomes light and stroke becomes longer.
(c) Check that the brake pedal becomes light to depress.
If the pedal does not become to be light to depress, check and
replace the brake line and hydraulic brake booster.
(d) Turn the ignition switch ON, check the pump motor opera-
tion noise.
If the pump motor does not operate, check and replace the wire
harness and pump motor (See page BR-64).
(e) Connect the TOYOTA hand-held tester.
(1) Connect the TOYOTA hand- held tester to the
DLC3.
(2) Turn the ignition switch ON.
(3) Select the ºACTIVE TESTº mode on the TOYOTA
hand-held tester.
HINT:
Please refer to the TOYOTA hand-held tester operator's
manual for further details.
To protect the solenoids, TOYOTA hand-held tester turns
OFF automatically 2 sec. after every solenoid has been
turned ON.
(f) Inspect the front TRAC & VSC solenoid operation.
(1) Select ºSA1º and ºSA2º on the TOYOTA hand-held
tester.
(2) With ºSA1º and ºSA2º turned ON simultaneously
with the TOYOTA hand-held tester, depress the
brake pedal with stable force and check that the
pedal cannot be depressed.
Page 554 of 3115
- BRAKEHYDRAULIC BRAKE BOOSTER
BR-45
2181 Author: Date:
2004 LAND CRUISER (RM1071U)
HINT:
To protect the solenoids, TOYOTA hand-held tester turns OFF
automatically 2 sec. after every solenoid has been turned ON.
If the pedal can be depressed, replace the hydraulic brake
booster.
NOTICE:
When operating it continuously, set the interval of more
than 20 sec.
(3) Once, release the brake pedal.
(4) When the solenoids are OFF, after depressing the
brake pedal again and check that the brake pedal
can be depressed.
If the pedal cannot be depressed, replace the hydraulic brake
booster.
(g) Inspect the front ABS solenoid operation.
(1) Select ºSFRHº and ºSFLHº on the TOYOTA hand-
held tester.
(2) With ºSFRHº and ºSFLHº turned ON simultaneously
with the TOYOTA hand-held tester, depress the
brake pedal with stable force and check that the
brake pedal cannot be depressed.
HINT:
To protect the solenoids, TOYOTA hand-held tester turns OFF
automatically 2 sec. after every solenoid has been turned ON.
If the pedal can be depressed, replace the hydraulic brake
booster.
(3) Once, release the brake pedal when the solenoids
are OFF, check that the brake pedal can be de-
pressed.
If the pedal cannot be depressed, replace the hydraulic brake
booster.
(4) Once, release the brake pedal. After depressing
and holding the brake pedal with stable force, turn
the SFRH and SFRR solenoids ON simultaneously.
HINT:
To protect the solenoids, TOYOTA hand-held tester turns OFF
automatically 2 sec. after every solenoid has been turned ON.
(5) When the solenoids are OFF, check that the brake
pedal can be depressed.
If the pedal cannot be depressed, replace the hydraulic brake
booster.
(6) Once, release the brake pedal. After depressing
and holding the brake pedal with stable force, turn
the SFLH and SFLR solenoids ON simultaneously.
HINT:
To protect the solenoids, TOYOTA hand-held tester turns OFF
automatically 2 sec. after every solenoid has been turned ON.
Page 555 of 3115
BR-46
- BRAKEHYDRAULIC BRAKE BOOSTER
2182 Author: Date:
2004 LAND CRUISER (RM1071U)
(7) When the solenoids are OFF, check that the brake
pedal can be depressed.
If the pedal cannot be depressed, replace the hydraulic brake
booster.
(h) Jack up and support the vehicle.
(i) Release the parking brake lever.
(j) Shift the transfer shift lever to ºNº position and check that
the rear wheels by rotating them by hand.
(k) Inspect the rear TRAC & VSC solenoid operation.
(1) Select the ºSA3º and ºSTRº on the TOYOTA hand-
held tester.
(2) Turn the ºSA3º and ºSTRº ON simultaneously with
the TOYOTA hand-held tester, and check that the
rear wheel does not rotate by hand.
HINT:
When rotating the wheel fast, the fail-safe function is activated
and judgement cannot be made properly. So rotate the wheel
as slowly as possible.
If the rear wheels rotate, replace the hydraulic brake booster.
(3) Turn the ºSA3º and ºSTRº OFF simultaneously, and
check that the rear wheels by rotating them by
hand.
HINT:
To protect the solenoids, TOYOTA hand-held tester turns
OFF automatically 2 sec. after every solenoid has been
turned ON.
When rotating the wheel fast, the fail-safe function is acti-
vated and judgement cannot be made properly. So rotate
the wheel as slowly as possible.
NOTICE:
When operating it continuously, set the interval of more
than 20 sec.
If the rear wheels stop, replace the hydraulic brake booster.
(l) Inspect the right rear ABS solenoid.
(1) Select the ºSA3º, ºSTRº and ºSRRHº, on the TOYO-
TA hand-held tester.
(2) Turn the ºSA3º, ºSTRº and ºSRRHº ON simulta-
neously with the TOYOTA hand-held tester, and
check that the right rear wheel by rotating it by hand.
HINT:
To protect the solenoids, TOYOTA hand-held tester turns
OFF automatically 2 sec. after every solenoid has been
turned ON.
When rotating the wheel fast, the fail-safe function is acti-
vated and judgement cannot be made properly. So rotate
the wheel as slowly as possible.
When solenoid is OFF, the wheel might stop temporarily.
However if the wheel rotates again, the function works
normally.
If the rear wheels stop, replace the hydraulic brake booster.
Page 556 of 3115
- BRAKEHYDRAULIC BRAKE BOOSTER
BR-47
2183 Author: Date:
2004 LAND CRUISER (RM1071U)
(3) Turn the ºSA3º, ºSTRº and ºSRRHº OFF, and check
that the right rear wheel by rotating it by hand.
HINT:
To protect the solenoids, TOYOTA hand-held tester turns
OFF automatically 2 sec. after every solenoid has been
turned ON.
When rotating the wheel fast, the fail-safe function is acti-
vated and judgement cannot be made properly. So rotate
the wheel as slowly as possible.
If the right rear wheel stop, replace the hydraulic brake booster.
(4) Depress the pedal with stable force, then turn the
ºSRRHº and ºSRRRº ON simultaneously.
(5) When the solenoids are ON, check that the right
rear wheel by rotating it by hand.
(m) Inspect the left rear ABS solenoid operation.
(1) Select the ºSA3º, ºSTRº and ºSRLHº on the TOYO-
TA hand-held tester.
(2) Turn the ºSA3º, ºSTRº and ºSRLHº ON with TOYO-
TA hand-held tester, and check that the left rear
wheel by rotating it by hand.
HINT:
When rotating the wheel fast, the fail-safe function is activated
and judgement cannot be made properly. So rotate the wheel
as slowly as possible.
If the rear wheels stop, replace the hydraulic brake booster.
(3) Turn the ºSA3º, ºSTRº and ºSRLHº OFF and check
that the left rear wheel by rotating it by hand.
HINT:
To protect the solenoids, TOYOTA hand-held tester turns
OFF automatically 2 sec. after every solenoid has been
turned ON.
When rotating the wheel fast, the fail-safe function is acti-
vated and judgement cannot be made properly. So rotate
the wheel as slowly as possible.
When solenoid is OFF, the wheel might stop temporarily.
However if the wheel rotates again, the function works
normally.
If the left rear wheel stop, replace the hydraulic brake booster.
(4) Depress the pedal with stable force, then turn the
ºSRLHº and ºSRLRº ON simultaneously.
HINT:
To protect the solenoids, TOYOTA hand-held tester turns OFF
automatically 2 sec. after every solenoid has been turned ON.
(5) When the solenoids are ON, check that the left rear
wheel by rotating it by hand.
HINT:
When rotating the wheel fast, the fail-safe function is activated
and judgement cannot be made properly. So rotate the wheel
as slowly as possible.
(n) Lower the vehicle.
Page 557 of 3115
F04459
F02821
Hydraulic Brake
BoosterSub-wire Harness S (SST)
FRONT
REAR
AIR BLEED BR-48
- BRAKEHYDRAULIC BRAKE BOOSTER
2184 Author: Date:
2004 LAND CRUISER (RM1071U)
(o) Disconnect the TOYOTA hand-held tester.
4. w/ ABS only,
In case of using ABS actuator checker (SST):
INSPECT HYDRAULIC BRAKE BOOSTER OPERA-
TION
(a) Inspect the battery positive voltage.
Battery positive voltage: 10 - 14 V
(b) Disconnect the 2 connectors from hydraulic brake boost-
er.
(c) Connect the actuator checker (SST) to the hydraulic
brake booster side wire harness via the sub-wire harness
(SST), as shown in the following chart.
SST 09990-00150, 09990-00480
HINT:
Connect the connector with the label of ºFRONTº attached to
the connector of actuator checker.
(d) Connect the red cable of the checker to the battery posi-
tive (+) terminal and the black cable to the negative (-) ter-
minal.
Page 558 of 3115
F04706
F02828
- BRAKEHYDRAULIC BRAKE BOOSTER
BR-49
2185 Author: Date:
2004 LAND CRUISER (RM1071U)
(e) Place ºSHEET Gº (SST) of ºFRONTº on actuator checker.
SST 09990-00240
(f) Turn the ignition switch OFF, depress the brake pedal
more than 40 times.
HINT:
When a pressure in power supply system is released, reaction
force becomes light and stroke becomes longer.
(g) Turn the ignition switch ON, check the pump motor opera-
tion noise.
If the pump motor does not operate, check and replace the wire
harness and pump motor (See page BR-64).
(h) Inspect the front switching solenoid operation.
(1) Push in and hold the ºSA1º and ºSA2º switches si-
multaneously, depress strongly and hold the brake
pedal with stable force.
NOTICE:
Do not keep the ºSA1º and ºSA2º pushed down for more
than 10 sec. When operating it continuously, set the inter-
val of more than 20 sec.
(2) Check that the brake pedal cannot be depressed.
If the pedal can be depressed, replace the hydraulic brake
booster.
(3) Release the ºSA1º switch and check that the brake
pedal can be depressed.
If the pedal can not be depressed, replace the hydraulic brake
booster.
(4) Release the ºSA2º switch and check that the brake
pedal can be depressed.
If the pedal can not be depressed, replace the hydraulic brake
booster.
(i) Inspect the right front solenoid operation.
(1) Turn the selector switch to ºRHº position.
(2) Push and hold in the MAIN push switch and ºSA2º
switch simultaneously depress and hold the brake
pedal with stable force.
NOTICE:
Do not keep the MAIN push switch and ºSA2º switch
pushed down for more than 10 sec. When operating it con-
tinuously, set the interval of more than 20 sec.