TOYOTA LAND CRUISER 1998 Factory Repair Manual
Manufacturer: TOYOTA, Model Year: 1998, Model line: LAND CRUISER, Model: TOYOTA LAND CRUISER 1998Pages: 3115, PDF Size: 54.88 MB
Page 561 of 3115
F09169
F02821
Hydraulic Brake
BoosterSub-wire Harness S (SST)
FRONT
REAR
AIR BLEEDActuator Checker (SST) BR-52
- BRAKEHYDRAULIC BRAKE BOOSTER
2188 Author: Date:
2004 LAND CRUISER (RM1071U)
(11) Check that the right rear wheel rotates.
If the right rear wheels stops, replace the hydraulic brake boost-
er.
(p) Stop the engine and lower the vehicle.
(q) Remove the ºSHEET Gº (SST) and disconnect the actua-
tor checker (SST) and sub-wire harness (SST) from the
hydraulic brake booster.
(r) Connect the 2 connectors to the actuator.
(s) Clear the DTC (See page DI-505).
5. w/ ABS & TRAC & VSC 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
S (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 562 of 3115
F04706
F02828
- BRAKEHYDRAULIC BRAKE BOOSTER
BR-53
2189 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) 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.
(h) 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).
(i) Inspect the front TRAC & VSC 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 cannot be depressed, replace the hydraulic brake
booster.
(4) Release the ºSA2º switch and check that the brake
pedal can be depressed.
If the pedal cannot be depressed, replace the hydraulic brake
booster.
(j) Inspect the right front ABS 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.
Page 563 of 3115
F02827
F04707
BR-54
- BRAKEHYDRAULIC BRAKE BOOSTER
2190 Author: Date:
2004 LAND CRUISER (RM1071U)
(3) Check that the brake pedal cannot be depressed.
If the pedal can be depressed, replace the hydraulic brake
booster.
(4) Release the MAIN push switch and ºSA2º switch si-
multaneously and check that the brake pedal can
be depressed.
If the pedal cannot be depressed, replace the hydraulic brake
booster.
(5) Release the brake pedal.
(6) Depress and hold the brake pedal with stable force,
push and hold in MAIN push switch.
NOTICE:
Do not keep the MAIN push switch pushed down for more
than 10 sec. When operating it continuously, set the inter-
val of more than 20 sec.
(7) Check that the brake pedal cannot be depressed.
If the pedal can be depressed, replace the hydraulic brake
booster.
(8) Release the MAIN push switch, and check that the
brake pedal can be depressed.
If the pedal cannot be depressed, replace the hydraulic brake
booster.
(9) Release the brake pedal.
(k) Inspect the left front ABS solenoid operation.
(1) Turn the selector switch to ºLHº position.
(2) Push and hold in the MAIN push switch and ºSA1º
switch simultaneously, depress and hold the brake
pedal with stable force.
NOTICE:
Do not keep the MAIN push switch and ºSA1º switch
pushed down for more than 10 sec. When operating it con-
tinuously, set the interval of more than 20 sec.
(3) Check that the brake pedal cannot be depressed.
If the pedal can be depressed, replace the hydraulic brake
booster.
(4) Release the MAIN push switch and ºSA1º switch si-
multaneously, and check that the brake pedal can
be depressed.
If the pedal cannot be depressed, replace the hydraulic brake
booster.
(5) Release the brake pedal.
Page 564 of 3115
F02829
F02830
F02831
- BRAKEHYDRAULIC BRAKE BOOSTER
BR-55
2191 Author: Date:
2004 LAND CRUISER (RM1071U)
(6) Depress and hold the brake pedal with stable force,
push and hold in MAIN push switch.
NOTICE:
Do not keep the MAIN push switch pushed down for more
than 10 sec. When operating it continuously, set the inter-
val of more than 20 sec.
(7) Check that the brake pedal cannot be depressed.
If the pedal can be depressed, replace the hydraulic brake
booster.
(8) Release the MAIN push switch, and check that the
brake pedal can be depressed.
If the pedal cannot be depressed, replace the hydraulic brake
booster.
(9) Release the brake pedal.
(l) Turn the ignition switch OFF, then reconnect the connec-
tor of sub- wire harness from the one with label of
ºFRONTº to ºREARº.
(m) Place ºSHEET Gº of ºREARº on the actuator checker.
(n) Jack up and support the vehicle.
(o) Start the engine and run it at idle.
(p) Inspect the rear TRAC & VSC solenoid.
(1) Release the parking brake lever and shift the shift
lever to ºLº position.
(2) Push and hold the ºSA3º switch and ºSTRº switch
simultaneously.
NOTICE:
Do not keep the ºSTRº switch pushed down for more
than 10 sec.
Do not keep the ºSA3º switch pushed down for more
than 5 sec.
When operating it continuously, set the interval of
more than 20 sec.
(3) Check that the rear wheels stop.
If the rear wheels rotate, replace the hydraulic brake booster.
(4) Release the ºSA3º switch and ºSTRº switch simulta-
neously.
(5) Check that the rear wheels rotate.
If the rear wheels stop, replace the hydraulic brake booster.
(q) Inspect the right rear ABS solenoid.
(1) Turn the selector switch to ºRHº position.
(2) Depress the brake pedal several times and release
the brake pedal when the pump begins rotating.
Wait until the pump stops.
(3) Turn the ignition switch OFF.
(4) Depress the brake pedal with a force of 343 N (35
kgf, 77 lbf), record the fluid surface in the reservoir
tank of the hydraulic brake booster.
Page 565 of 3115
F02832
BR-56
- BRAKEHYDRAULIC BRAKE BOOSTER
2192 Author: Date:
2004 LAND CRUISER (RM1071U)
(5) Press the MAIN push switch for 10 sec., and check
that the fluid surface in the reservoir tank of the hy-
draulic brake booster does not rise up at this time.
If the fluid surface level rises up, replace the hydraulic brake
booster.
NOTICE:
Do not press MAIN push switch for more than 10 sec. When
operating the switch continuously, do it an interval of more
than 20 sec.
(6) Start the engine and run it at idle.
(7) Depress the brake pedal.
(8) Release the parking brake lever and shift the shift
lever to ºLº position.
(9) Once, release the brake pedal. After depressing the
brake pedal with stable force, then push and hold
MAIN push switch.
(10) Check that the right rear wheel rotates.
If the right rear wheel stops, replace the hydraulic brake boost-
er.
(r) Inspect the left rear ABS solenoid.
(1) Turn the selector switch to ºLHº position.
(2) Depress the brake pedal several times and release
the brake pedal when the pump begins rotating.
Wait until the pump stops.
(3) Turn the ignition switch OFF.
(4) Depress the brake pedal with a force of 343 N (35
kgf, 77 lbf), record the fluid surface in the reservoir
tank of the hydraulic brake booster.
(5) Press the MAIN push switch for 10 sec., and check
that the fluid surface in the reservoir tank of the hy-
draulic brake booster does not rise up at this time.
If the fluid surface level rises up, replace the hydraulic brake
booster.
NOTICE:
Do not press MAIN push switch for more than 10 sec. When
operating the switch continuously, do it an interval of more
than 20 sec.
(6) Start the engine and run it at idle.
(7) Depress the brake pedal.
(8) Release the parking brake lever and shift the shift
lever to ºLº position.
(9) Once, release the brake pedal. After depressing the
brake pedal with stable force, then push and hold
MAIN push switch.
(10) Check that the left rear wheel rotates.
If the left rear wheel stops, replace the hydraulic brake booster.
(s) Stop the engine and lower the vehicle.
Page 566 of 3115
- BRAKEHYDRAULIC BRAKE BOOSTER
BR-57
2193 Author: Date:
2004 LAND CRUISER (RM1071U)
(t) Remove the ºSHEET Gº (SST) and disconnect the actua-
tor checker (SST) and sub-wire harness S (SST) from the
hydraulic brake booster.
(u) Connect the 2 connectors to the actuator.
(v) Clear the DTC (See page DI-505).
Page 567 of 3115
BR0TI-09
F05529ABC BR-66
- BRAKEHYDRAULIC BRAKE BOOSTER
2202 Author: Date:
2004 LAND CRUISER (RM1071U)
REASSEMBLY
Reassembly is in the reverse order of disassembly (See
page BR-62).
INSTALL ACCUMULATOR BRACKET
When installing the accumulator bracket, adjust to secure the
clearance shown in the illustration on the left.
Standard clearance:
A + B: 4.1 mm (0.161 in.) or less
C: 0.3 - 3.8 mm (0.012 - 0.150 in.)
HINT:
Secure more than 0.3 mm (0.012 in.) clearance for A and B
each.
Page 568 of 3115
BR12C-05
F04456
F08307
BR-60
- BRAKEHYDRAULIC BRAKE BOOSTER
2196 Author: Date:
2004 LAND CRUISER (RM1071U)
REMOVAL
NOTICE:
Before starting the work, make sure that the ignition switch
is OFF and 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.
NOTICE:
As high pressure is applied to the brake actuator tube
No. 1, never deform it.
Until the work is over, do not turn the ignition switch
ON.
1. DRAW OUT FLUID WITH SYRINGE
NOTICE:
Do not let brake fluid remain on a painted surface. Wash it
off immediately.
2. REMOVE SCUFF PLATE, COWL SIDE TRIM, LOWER
NO. 1 PANEL, LH LOWER PANEL AND NO. 2 HEATER
TO REGISTER DUCT (See page BO-81)
3. REMOVE ABS OR ABS & TRAC & VSC ECU
Remove the 2 nuts and ABS or ABS & TRAC & VSC ECU.
Torque: 5.0 N´m (51 kgf´cm, 44 in.´lbf)
4. w/ ABS only:
DISCONNECT 4 CONNECTORS
5. w/ ABS & TRAC & VSC only:
DISCONNECT 5 CONNECTORS
Page 569 of 3115
F04455
SST
F08308
SST
F06413
- BRAKEHYDRAULIC BRAKE BOOSTER
BR-61
2197 Author: Date:
2004 LAND CRUISER (RM1071U)
6. w/ ABS only:
DISCONNECT BRAKE LINES
Using SST, disconnect the 3 brake lines.
SST 09023-00100
Torque: 15 N´m (155 kgf´cm, 11 ft´lbf)
7. w/ ABS & TRAC & VSC only:
DISCONNECT BRAKE LINES
Using SST, disconnect the 4 brake lines.
SST 09023-00100
Torque: 15 N´m (155 kgf´cm, 11 ft´lbf)
8. REMOVE CLIP AND CLEVIS PIN
9. REMOVE HYDRAULIC BRAKE BOOSTER ASSEMBLY
(a) Remove the 4 booster installation nuts.
Torque: 15 N´m (155 kgf´cm, 11 ft´lbf)
(b) Remove the booster assembly and gasket.
Page 570 of 3115
BR0NC-06
F06434
SST
SST
- BRAKEPROPORTIONING AND BY-PASS VALVE (P & B
VALVE)BR-39
2175 Author: Date:
2004 LAND CRUISER (RM1071U)
PROPORTIONING AND BY-PASS VALVE (P & B VALVE)
ON-VEHICLE INSPECTION
1. INSTALL LSPV GAUGE (SST) AND BLEED AIR
(a) Turn the ignition switch OFF, depress the brake pedal more than 40 times.
(b) Install the LSPV gauge (SST) and bleed air.
SST 09709-29018
(c) Turn the ignition switch ON, and wait until the pump motor has stopped.
2. RAISE FRONT BRAKE CALIPER PRESSURE AND CHECK REAR BRAKE CALIPER PRESSURE
Depress the brake pedal and check fluid pressure.
Front brake caliper pressureRear brake caliper pressure
2,256 kPa (23 kgf´cm2, 327 psi)2,452 kPa (25 kgf´cm2, 356 psi)
4,413 kPa (45 kgf´cm2, 640 psi)3,334 - 3,727 kPa (34 - 38 kgf´cm2, 484 - 540 psi)
7,845 kPa (80 kgf´cm2, 1,138 psi)5,197 kPa (53 kgf´cm2, 754 psi)
If the rear brake caliper pressure is incorrect, replace the hydraulic brake booster.
3. REMOVE LSPV GAUGE (SST) AND BLEED BRAKE SYSTEM (See page BR-4)
4. CHECK FOR FLUID LEAKAGE