1998 TOYOTA LAND CRUISER brake fluid

CodeMaterial
nameHeat*
resistant
temperature
limit °C (°F)Resistance to
alcohol or gasolineNotes
AASAcrylonitrile
Acrylic Styrene80
(176)Alcohol is harmless if applied only
for short time in small amounts
(e.g., quick wiping to remove
grease.)Avoid gasoline and
organic or aromatic
solvents.
ABSAcrylonitrile
Butadiene Styrene80
(176)Alcohol is harmless if applied only
for short time in small amounts
(e.g., quick wiping to remove
grease.)Avoid gasoline and
organic or aromatic
solvents.
AESAcrylonitrile
Ethylene Styrene80
(176)Alcohol is harmless if applied only
for short time in small amounts
(e.g., quick wiping to remove
grease.)Avoid gasoline and
organic or aromatic
solvents.
ASAAcrylonitrile
Styrene
Acrylate80
(176)Alcohol is harmless if applied only
for short time in small amounts
(e.g., quick wiping to remove
grease.)Avoid gasoline and
organic or aromatic
solvents.
CABCellulose
Acetate80
(176)Alcohol is harmless if applied only
for short time in small amounts
(e.g., quick wiping to remove
grease.)Avoid gasoline and
organic or aromatic
solvents.
EPDMEthylene
Propylene100
(212)Alcohol is harmless.
Gasoline is harmless if applied only
for short time in small amounts.Most solvents are
harmless but avoid
dipping in gasoline,
solvents, etc.
FRPFiber
Reinforced
Plastics180
(356)Alcohol and gasoline are
harmless.Avoid alkali.
EVAEthylene
Acetate70
(158)Alcohol is harmless if applied only
for short time in small amounts
(e.g., quick wiping to remove
grease).Avoid gasoline and
organic oraromatic
solvents.
PAPolyamide
(Nylon)80
(176)Alcohol and gasoline are
harmless.Avoid battery acid.
PBTPolybutylene
Terephthalate160
(320)Alcohol and gasoline are
harmless.Most solvents are
harmless.
PC
Polycarbonate120
(248)Avoid gasoline, brake
fluid, wax, wax removers
and organic solvents.
Avoid alkali. Alcohol is harmless.
HANDLING PRECAUTIONS
1. The repair procedure for plastic body parts must conform with the type of plastic material.
2. Plastic body parts are identified by the codes in the following chart.
3. When repairing metal body parts adjoining plastic body parts (by brazing, frame cutting, welding,
painting etc.), consideration must given to the property of the plastic.
*Temperatures higher than those listed here may result in material deformation during repair.
PLASTIC BODY PARTSPP-2

F09989
ABS & BA & TRAC
& VSC ECU
V8
VSC Warmning Buzzer Cowl Side J/B LH
ECU-IG1
BZ A422
L B-W
21 2B 18
Buzzer
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEMDI-649
842 Author
: Date
:
2004 LAND CRUISER (RM1071U)
Brake Warning and VSC Buzzer Circuit
CIRCUIT DESCRIPTION
The brake warning and VSC buzzer sounds while the accumulator pressure is abnormally low or an ab-
normality casing low fluid pressure occurs VSC is activated.
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Start the inspection from step 1 in case of using the hand-held tester and start from step 2 in case of not
using the hand-held tester.
1 Check operation of the brake warning and VSC buzzer.
PREPARATION:
(a) Connect the hand-held tester to the DLC3.
(b) Turn the ignition switch ON and push the hand-held tester main switch ON.
(c) Select the ACTIVE TEST mode on the hand-held tester.
CHECK:
Check that brake warning and VSC buzzer sounds ºONº and ºOFFº with the hand-held tester.
OK Check and replace skid control ECU.
NG
DICAB-01

F16083
Cowl Side J/B RH
I18
Ignition SW ABS & BA
& TRAC
& VSC Actuator
Cowl Side J/B LH
Engine Room J/B
F15
FL Block
AM2
P8
Parking
Brake
SW Battery BrakeBRL A435
Y-G
3A 11
3Q6
SB
3E4 MET
3Q7
SB C1419
C1210
C151
C1420
2B20IX1
A A
A4213 2Q36
A40
LBL2
Y-G
2KR-W 27AM2 2A10
1B9
EC 2
MAIN6
IG2J4
J/CB-R Combination Meter
1 W-R
B-G
BR 8
SBSB
2E
2B41
4SB
7
PKB
R-W
1C1W-R
B-RABS & BA & TRAC
& VSC ECU
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEMDI-635
828 Author
: Date
:
2004 LAND CRUISER (RM1071U)
BRAKE Warning Light Circuit
CIRCUIT DESCRIPTION
The BRAKE warning light lights up while the brake fluid is insufficient and EBD is abnormal.
WIRING DIAGRAM
DICA7-02

DI-636- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
829 Author
: Date
:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
1 Check parking brake switch circuit (See page BE-63).
NG Repair or replace parking brake switch circuit.
OK
2 Check brake fluid level warning switch circuit (See page BE-63).
NG Repair or replace brake fluid level warning
switch circuit.
OK
3 Is DTC output for ABS?
YES Repair circuit indicated by the output code.
NO
4 Do the warning lights other than BRAKE warning light come on?
YES Go to step 6.
NO

- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEMDI-543
736 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DTCC1225 / 25 to C1228 / 28TRAC & VSC Solenoid Circuit
CIRCUIT DESCRIPTION
The TRAC & VSC solenoid operates in accordance with signals from the ECU and raises the fluid pressure
in and releases it from the brake cylinders.
DTC No.DTC Detecting ConditionTrouble Area
C1225 / 25Open or short in SA1 circuit continues for 0.015 sec. or
more.
Hydraulic brake booster

SA1 circuit
C1226 / 26Open or short in SA2 circuit continues for 0.015 sec. or
more.
Hydraulic brake booster

SA2 circuit
C1227 / 27Open or short in SA3 circuit continues for 0.015 sec. or
more.
Hydraulic brake booster

SA3 circuit
C1228 / 28Open or short in STR circuit continues for 0.015 sec. or
more.
Hydraulic brake booster

STR circuit
DIC9H-02

- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEMDI-571
764 Author
: Date
:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
HINT:
Start the inspection from step 1 in case of using the hand-held tester and start from step 2 in case of not
using the hand-held tester.
1 Check output value of the master cylinder pressure sensor.
PREPARATION:
(a) Connect the hand-held tester to the DLC3.
(b) Turn the ignition switch ON and push the hand-held tester main switch ON.
(c) Select the DATA LIST mode on the hand-held tester.
CHECK:
Check that the brake fluid pressure value of the master cylinder pressure sensor displayed on the hand-held
tester is changing when depressing the brake pedal.
OK:
Brake fluid pressure value must be changing.
OK Go to step 4.
NG
2 Check master cylinder pressure sensor.
PREPARATION:
(a) Install the LSPV gauge to the front caliper bleeder plug portion, and bleed the LSPV gauge.
SST 09709-29018
(b) Remove the air cleaner inlet and battery clamp cover.
CHECK:
Start the engine and depress the brake pedal, then check the relation between the fluid pressure and voltage
of PMC and E2 terminals of the skid control ECU with connectors still connected.
OK:
Front brake caliper fluid pressureVoltage
0 kPa (0 Kgf/cm2, 0 psi)0.37 to 0.63 V
5,883 kPa (60 kgf/cm2, 853 psi)1.57 to 1.83 V
11,768 kPa (120 kgf/cm2, 1,706 psi)2.77 to 3.03 V
HINT:
Voltage between terminals VCM and E2: 4.7 to 5.3 V
NG Replace master cylinder pressure sensor.
OK

F04506
LOCKON
PH
PHG
F06043
LOCK
PH
PHG
DI-598- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
791 Author
: Date
:
2004 LAND CRUISER (RM1071U)
3 Check pressure switch (PH) operation.
PREPARATION:
(a) Turn the ignition switch OFF, and depress the brake pedal
40 times or more.
HINT:
When pressure in the power supply system is released, reac-
tion force becomes light and stroke becomes longer.
(b) Install the LSPV gauge (SST) to the rear brake caliper
and bleed air.
SST 09709-29018
CHECK:
While checking the voltage between terminals PH and PHG of
the hydraulic brake booster, depress the brake pedal with a
force of more than 294 N (30 kgf, 66 lbf) and turn the ignition
switch ON, then check the rear wheel cylinder pressure when
voltage changes from 6 V to 0 V.
OK:
12,553 to 20,104 kpa (128 to 205 kgf´cm2, 1,820 to
2,916 psi)
PREPARATION:
Turn the ignition switch OFF and disconnect the connector (5P)
from the hydraulic brake booster.
CHECK:
While checking the resistance between terminals PH and PHG,
depress the brake pedal changing the force in a range of 197
N (20 kgf, 44 lbf) to 294 N (30 kgf, 66 lbf) and check the rear
wheel cylinder pressure when resistance changes from 0 kW to
1 kW between PH and PHG.
OK:
11,964 to 18,240 kpa (122 to 186 kgf´cm2, 1,735 to
2,645 psi)
HINT:
After inspection, connect the connector, fill brake reservoir with
brake fluid and clear the DTC (See page DI-505).
OK Go to step 5.
NG

DI-600- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
793 Author
: Date
:
2004 LAND CRUISER (RM1071U)
HINT:
After inspection, connect the connector, fill brake reservoir with
brake fluid and clear the DTC (See page DI-505).
NG Replace hydraulic brake booster assembly.
OK
6 Check pressure switch (PH) and pressure switch (PL)
CHECK:
Compare the pressure value of the rear wheel cylinder measured in check pressure switch (PL) operation
with the one measured in check pressure switch (PH) operation.
OK:

Pressure when the voltage between PH and PHG becomes 6 to 0 V > pressure when the resis-
tance between PL and PLG becomes 5.7 kW to 1.0 kW.

Pressure when the resistance between PH and PHG becomes 0 kW to 1 kW > pressure when
the resistance between PL and PLG becomes 1.0 kW to 5.7 kW.
NG Replace hydraulic brake booster assembly.
OK
Check and replace skid control ECU.
7 Check for open or short circuit in harness and connector between hydraulic
brake booster pump motor and hydraulic brake booster (See page IN-36).
NG Replace wire harness.
OK