1998 TOYOTA LAND CRUISER brake

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

Component to be alignedSection of repair manual for
relevant model
Front WheelsSuspension and Axle (SA) section
Rear WheelsSuspension and Axle (SA) section
Plopeller ShaftPropeller Shaft (PR) section
AIRBAG SENSOR ASSEMBLY

Never reuse the airbag sensor assembly involved in a collision when the SRS has deployed.

The connectors to the airbag sensor assembly should be connected or disconnected with the sensor
mounted on the floor. If the connectors are connected or disconnected while the airbag sensor as-
sembly is not mounted to the floor, it could cause undesired ignition of the supplemental restraint sys-
tem.

Work must be started after 90 seconds from the time the ignition switch is turned to the ºLOCKº posi-
tion and the negative (-) terminal cable is disconnected from the battery, even if only loosening the
set bolts of the airbag sensor assembly.
WIRE HARNESS AND CONNECTOR

The SRS wire harness is integrated with the cowl wire harness assembly and floor wire harness as-
sembly. The wires for the SRS wire harness are encased in a yellow corrugated tube. All the connec-
tors for the system are also a standard yellow color. If the SRS wire harness becomes disconnected
or the connector becomes broken due to an accident, etc., repair or replace it as shown on page.
2. BRAKE SYSTEM
The brake system is one of the most important safety components. Always follow the directions and
notes given in section BR of the repair manual for the relevant model year when handling brake sys-
tem parts.
NOTICE: When repairing the brake master cylinder or TRAC system, bleed the air out of the TRAC
system.
3. DRIVE TRAIN AND CHASSIS
The drive train and chassis are components that can have great effects on the running performance
and vibration resistance of the vehicle. After installing components in the sections listed in the table
below, perform alignments to ensure correct mounting angles and dimensions. Particularly accurate
repair of the body must also be done to ensure correct alignment.
HINT: Correct procedures and special tools are required for alignment. Always follow the directions
given in the repair manual for the relevant model during alignment and section Dl of this manual.
4. COMPONENTS ADJACENT TO THE BODY PANELS
Various types of component parts are mounted directly on or adjacently to the body panels. Strictly ob-
serve the following precautions to prevent damaging these components and the body panels during
handling.

Before repairing the body panels, remove their components or apply protective covers over the com-
ponents.

Before prying components off using a screwdriver or a scraper, etc., attach protective tape to the tool
tip or blade to prevent damaging the components and the body paint.

Before removing components from the outer surface of the body, attach protective tape to the body
to ensure no damage to painted areas.
HINT: Apply touch-up paint to any damaged paint surfaces.

Before drilling or cutting sections, make sure that there are no wires, etc. on the reverse side.
INTRODUCTIONIN-8

F17763
EXI
WT A43
A43 IX1
F15Cowl Side J/B RH
Cowl Side J/B RH Cowl Side J/B RH
Cowl Side J/B LHI18
Ignition SW
Engine Room J/BCombination MeterABS & BA & TRAC
& VSC ECU
SB
D4
Detection SW
(Center Diff. Lock)
2
W-B
P-B
SB
SB
SB MET1
2
47
3E3Q
56 3
3Q
3B
3Q3B J4
J/C
B-R B-R
A
AP-B
L-R
W-R AM2 IG2
76
41 10
2E 2A
1
9
1C1B
2 B-G
ECFL Block
Battery MAIN
EC BR W-R8IX1
VSC OFF
17
C13 C12 C151
103
7
14 26
AM2 DI-624
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
817 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DTC Always ON Malfunction in ECU
VSC TRAC Warning Light Circuit
CIRCUIT DESCRIPTION
Always ONThere is a malfunction in the ECU internal circuit.

Power source circuit

Skid control ECU

VSC TRAC warning light circuit
HINT:
If the fail safe function is activated in the VSC system, ºVSC OFFº indicator light lights up.
WIRING DIAGRAM
DICA4-01

- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEMDI-625
818 Author
: Date
:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
1 Check that the ECU connectors are securely connected to the ECU.
NO Connect the connector to the ECU.
YES
2 Is DTC output for VSC?
Check the DTC on page DI-505.
YES Repair circuit indicated by the output code.
NO
3 Does VSC TRAC warning light go off?
YES Check for open or short circuit in harness and
connector between ECU-IG fuse and ECU (See
page IN-36).
NO
4 Check battery positive voltage.
PREPARATION:
Start the engine.
CHECK:
Check the battery positive voltage.
OK:
Voltage: 10 to 16 V
NG Check and repair the charging system.
OK

DI-626- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
819 Author
: Date
:
2004 LAND CRUISER (RM1071U)
5 Check operation of the VSC TRAC warning light.
In case of using the hand-held tester:
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 ºONº and ºOFFº of the VSC TRAC warning light can be shown on the combination meter on the
hand-held tester.
In case of not using the hand-held tester:
PREPARATION:
(a) Turn the ignition switch OFF.
(b) Disconnect the connector from the skid control ECU.
(c) Turn the ignition switch ON.
CHECK:
Check that the VSC TRAC warning light goes off.
NG Check and replace combination meter (See
page BE-2).
OK
6Check for short circuit in harness and connector between combination meter and skid
control ECU, combination meter and DLC1 (See page IN-36).
NG Repair or replace harness or connector.
OK
Check and replace skid control ECU.

F17718F18533
ABS & BA & TRAC
& VSC ECU
Engine Room J/B Combination Meter
Cowl Side J/B RH
Cowl Side J/B LH
I18
Ignition SW
Cowl Side J/B RHWA 1
A42 4
3A 5
3Q 12
C12
41
2E10
2A
1B91
1C AM2
W-RB-R
C12
C15
ECSB
BR8
IX1 3Q SB7MET
4
3EB-R
B-G
FL Block SB R-L
W-R
76AM2 IG2
J4
J/C
AA
2
F15Battery 1 10
MAIN ABS
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEMDI-627
820 Author
: Date
:
2004 LAND CRUISER (RM1071U)
ABS Warning Light Circuit
CIRCUIT DESCRIPTION
If the ECU detects trouble, it lights the ABS warning light while at the same time prohibiting ABS control. At
this time, the ECU records a DTC in memory.
Connect terminals Tc and E
1 of the DLC1 or Tc and CG of DLC3 to make the ABS warning light blink and
output the DTC.
WIRING DIAGRAM
DICA5-02

DI-628- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
821 Author
: Date
:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
HINT:
Troubleshoot in accordance with the table below for each trouble symptom.
ABS warning light does not light up*1
ABS warning light remains on*2
*1: 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.
*
2: After inspection with step 4, start the inspection from step 5 in case of using the hand-held tester and
start from step 6 in case of not using hand-held tester.
1 Check operation of the ABS warning light.
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 ºONº and ºOFFº of the ABS warning light can be shown on the combination meter on the hand-
held tester.
OK Check and replace skid control ECU.
NG
2 Does the warning lights other than ABS warning light come on?
YES Repair ABS warning light bulb or combination
meter assembly.
NO

F00044
1
2
3 4
(+) (-) Continuity1 2
3 4
1
2
3 4 Open
Continuity
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEMDI-629
822 Author
: Date
:
2004 LAND CRUISER (RM1071U)
3 Check IG1 No. 1 relay.
PREPARATION:
Remove the IG1 No. 1 relay from the engine room J/B.
CHECK:
Check continuity between the IG1 No. 1 relay terminals listed
in the table below.
OK:
Terminals 3 and 4Continuity
Terminals 1 and 2Open
CHECK:
(a) Apply battery positive voltage between terminals 3 and 4.
(b) Check continuity between terminals.
OK:
Terminals 1 and 2Continuity
NG Replace IG1 No. 1 relay.
OK
Check for open circuit in harness and connector between IG1 No. 1 relay and combination meter
(See page IN-36).