1986 TOYOTA LAND CRUISER Chassis
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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
Page 1026 of 3115
A04550
9 1011 12 13141516 12345678
DLC3 DI-362
- DIAGNOSTICSAUTOMATIC TRANSMISSION
555 Author: Date:
(b) Inspect the DLC3.
The vehicle's ECM uses ISO 9141-2 for communication.
The terminal arrangement of DLC3 complies with SAE
J1962 and matches the ISO 9141-2 format.
Tester connectionConditionSpecified condition
7 (Bus Line) - 5 (Signal ground)During communicationPulse generation
4 (Chassis Ground) - BodyAlways1 W or less
5 (Signal Ground) - BodyAlways1 W or less
16 (B+) - BodyAlways9 to 14 V
HINT:
If your display shows UNABLE TO CONNECT TO VEHICLE
when you have connected the cable of the OBD II scan tool or
hand-held tester to the DLC3, turned the ignition switch ON
and operated the scan tool, there is a problem on the vehicle
side or tool side.
If the communication is normal when the tool is connected
to another vehicle, inspect the DLC3 on the original ve-
hicle.
If the communication is still impossible when the tool is
connected to another vehicle, the problem is probably in
the tool itself, so consult the Service Department listed in
the tool's instruction manual.
(c) Inspect the battery voltage.
Battery Voltage: 11 to 14 V
If voltage is below 11 V, recharge the battery before proceeding.
(d) Check the MIL.
(1) The MIL comes on when the ignition switch is turned
ON and the engine is not running.
HINT:
If the MIL does not light up, troubleshoot the combination meter
(See page BE-63).
(2) When the engine is started, the MIL should go off.
If the lamp remains on, it means that the diagnosis
system has detected a malfunction or abnormality
in the system.
Page 1076 of 3115
DIB69-01
I24672
Hand-held tester
DLC3
A04550
DLC3
10 11 12 13 14 15 16 12345678
9
- DIAGNOSTICSCRUISE CONTROL SYSTEM
DI-981
1174 Author: Date:
2004 LAND CRUISER (RM1071U)
PRE-CHECK
1. DIAGNOSIS SYSTEM
(a) Description
ECM controls the function of cruise control on this vehicle.
Data of the cruise control or DTC can be read from DLC3
of the vehicle. When a trouble occurs on cruise control,
Check CRUISE MAIN indicator does not light up but DTC
inspection is performed.
Therefore when there seems to be a trouble on cruise
control, use hand-held tester or SST to check and trou-
bleshoot it.
(b) Check the DLC3.
The vehicle's ECM uses ISO 9141-2 for communication.
The terminal arrangement of DLC3 complies with SAE
J1962 and matches the ISO 9141-2 format.
Terminal No.Connection/Specified ConditionCondition
4Chassis Ground e Body Ground/1 or lessAlways
13TC e Body Ground/9 - 14 VAlways
HINT:
If your display shows ºUNABLE TO CONNECT TO VEHICLEº
when you have connected the cable of the hand-held tester to
DLC3, turned the ignition switch ON and operated the hand-
held tester, there is a problem on the vehicle side or tool side.
If communication is normal when the tool is connected to
another vehicle, inspect DLC3 on the original vehicle.
If communication is still not possible when the tool is con-
nected to another vehicle, the problem is probably in the
tool itself, so consult the Service Department listed in the
tool's instruction manual.
Page 1408 of 3115
A04550
12 345678
11 12 13 14 15 16 910
DLC3
- DIAGNOSTICSENGINE
DI-5
198 Author: Date:
(b) Check the DLC3.
The vehicle's ECM uses the ISO 9141-2 for communica-
tion protocol. The terminal arrangement of the DLC3 com-
plies with SAE J1962 and matches the ISO 9141-2 for-
mat.
SymbolNameResult
(Terminal No.)(Reference terminal)(Condition)
SILBus º+º linePulse generation
(7)(5 - Signal ground)(During transmission)
CGChassis ground1 W or less
(4)(Body ground)(Always)
SGSignal ground1 W or less
(5)(Body ground)(Always)
BATBattery positive9 to 14 V
(16)(Body ground)(Always)
HINT:
Connect the cable of the hand-held tester to the DLC3, turn the
ignition switch ON and attempt to use the hand-held tester. If
the screen displays UNABLE TO CONNECT TO VEHICLE, a
problem exists in the vehicle side or the tester side.
If the communication is normal when the tool is connected
to another vehicle, inspect the DLC3 on the original ve-
hicle.
If the communication is still impossible when the tool is
connected to another vehicle, the problem is probably in
the tool itself, so consult the Service Department listed in
the tool's instruction manual.
(c) Inspect the battery voltage.
Battery Voltage: 11 to 14 V
If voltage is below 11 V, recharge the battery before proceeding.
(d) Check the MIL.
(1) The MIL comes on when the ignition switch is turned
ON and the engine is not running.
HINT:
If the MIL is not illuminated, troubleshoot the MIL circuit (See
page DI-355).
(2) When the engine is started, the MIL should not illu-
minate. If the lamp remains on, the diagnosis sys-
tem has detected a malfunction or abnormality in
the system.
Page 1450 of 3115
I24672
DLC3
Hand-held tester
DI1AL-28
A04550
DLC3
10 11 12 13 14 15 16 12345678
9
DI-1004
- DIAGNOSTICSENGINE IMMOBILISER SYSTEM
1197 Author: Date:
2004 LAND CRUISER (RM1071U)
PRE-CHECK
1. DIAGNOSIS SYSTEM
(a) Description
ECM controls the function of immobiliser on this vehicle.
Data of the immobiliser or DTC can be read from DLC3 of
the vehicle. When a trouble occurs on immobiliser, MIL
does not light up but DTC inspection is performed.
Therefore when there seems to be a trouble on immobilis-
er, use hand-held tester or SST to check and trouble-
shoot it.
(b) Inspect the DLC3.
The vehicle's ECM uses ISO 9141-2 for communication.
The terminal arrangement of DLC3 complies with
SAEJ1962 and matches the ISO 9141-2 format.
Tester connectionconditionSpecified condition
7 (Bus Line) - 5 (Signal ground)During communicationPulse generation
4 (Chassis Ground) - BodyAlways1 W or less
5 (Signal Ground) - BodyAlways1 W or less
16 (B+) - BodyAlways9 - 14 V
HINT:
If your display shows ºUNABLE TO CONNECT TO VEHICLEº
when you have connected the cable of hand-held tester to
DLC3, turned the ignition switch ON and operated the hand-
held tester, there is a problem on the vehicle side or tool side.
If communication is normal when the tool is connected to
another vehicle, inspect DLC3 on the original vehicle.
If communication is still not possible when the tool is con-
nected to another vehicle, the problem is probably in the
tool itself, so consult the Service Department listed in the
tool's instruction manual.
Page 1487 of 3115
F05340
TOYOTA Hand-held Tester
DLC3
DI239-15
N09214
DLC3 DI-658
- DIAGNOSTICSPOWER TILT AND POWER TELESCOPIC STEERING
COLUMN
851 Author: Date:
2004 LAND CRUISER (RM1071U)
PRE-CHECK
1. DESCRIPTION
(a) DIAGNOSIS SYSTEM
When troubleshooting Multiplex OBD (M-OBD) vehicles,
the only difference from the usual troubleshooting proce-
dure is that you connect the TOYOTA hand-held tester
to vehicle, and read off various data output from the ve-
hicle's Power Tilt and Telescopic Steering ECU.
The Power Tilt and Telescopic Steering ECU records the
applicable DTCs when the computer detects a malfunc-
tion in the computer itself or its circuit.
To check the DTCs, connect a TOYOTA hand-held tester
to DLC3 on the vehicle. The TOYOTA hand-held tester
enables you to erase the DTCs and activate the several
actuators and check freeze frame data and various forms
on steering data.
(b) DATA LINK CONNECTOR 3 (DLC3)
The Power Tilt and Telescopic Steering ECU uses ISO
14230 for communication. The terminal arrangement of
DLC3 complies with SAE J1962 and matches the ISO
14230 format.
Terminal No.ConnectionVoltage or ResistanceCondition
7Bus + LinePulse generationDuring transmission
4Chassis Grounde Body Ground 1 W or lessAlways
5Signal Grounde Body Ground 1 W or lessAlways
16Battery Positivee Body Ground 9 - 14 VAlways
HINT:
If your display shows ºUNABLE TO CONNECT TO VEHICLEº
when you have connected the cable of TOYOTA hand-held
tester to DLC3, turned the ignition switch ON and operated the
TOYOTA hand-held tester, there is a problem on the vehicle
side or tester side.
If communication is normal when the tester is connected
to another vehicle, inspect DLC3 on the original vehicle.
If communication is still not possible when the tester is
connected to another vehicle, the problem is probably in
the tester itself, so consult the Service Department listed
in the tester's Operator's Manual.
Page 1724 of 3115
DIB3P-01
A04550
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DLC3
H20916
DI-692
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
885 Author: Date:
2004 LAND CRUISER (RM1071U)
PRE-CHECK
1. DIAGNOSIS SYSTEM
(a) Check the DLC3.
HINT:
The vehicle's ECM uses ISO 9141-2 for communication. The
terminal arrangement of the DLC3 complies with SAE J1962
and matches the ISO 9141-2 format.
Terminal No.Connection/Voltage or ResistanceCondition
7Bus Line/Pulse generationDuring Transmission
4Chassis Ground e Body Ground/1 W or lessAlways
16Battery Positive e Body Ground/ 9 - 14 VAlways
HINT:
If your display shows UNABLE TO CONNECT TO VEHICLE
when you have connected the cable of the OBD II scan tool or
TOYOTA hand-held tester to the DLC3, turned the ignition
switch ON and operated the scan tool, there is a problem on the
vehicle side or tool side.
If communication is normal when the tool is con-
nected to another vehicle, inspect the DLC3 on the
original vehicle.
If communication is still not possible when the tool
is connected to another vehicle, the problem is
probably in the tool itself, so consult the Service De-
partment listed in the tool's instruction manual.
2. SRS WARNING LIGHT CHECK
(a) Turn the ignition switch to ON, and check that the SRS
warning light comes on.
(b) Check that the SRS warning light goes out after approx.
6 seconds.
HINT:
When the ignition switch is at ON and the SRS warning
light remains on or flashes, the airbag sensor assembly
has detected a malfunction code.
If, after approx. 6 seconds have elapsed, the SRS warn-
ing light sometimes comes on even when the ignition
switch is OFF. In this case, a short in the SRS warning light
circuit is possible. Proceed to ºSRS warning light circuit
malfunctionº on page DI-927.
Page 2410 of 3115
F02201N09214F05476
E1
DLC1
CG Ts
DLC3
Ts
B04696
Center Differential Lock
Indicator Light
Center Differential
Switch
Transfer Select
Lever
IN-18
- INTRODUCTIONFOR ALL OF VEHICLES
18 Author: Date:
2004 LAND CRUISER (RM1071U)
2. FOR VEHICLE EQUIPPED WITH VEHICLE SKID CON-
TROL (VSC) SYSTEM
(a) Precaution when using drum tester:
When using a drum tester, make sure that the ignition
switch is OFF, start the engine with the diagnosis connec-
tor short-circuited between Ts and E
1 (CG) and take a
measurement.
NOTICE:
Check that VSC warning light is blinking.
Ensure that the vehicle does not move using wires.
After the measurement, disconnect the short circuit
and check that the VSC warning light is turned off
when restarting the engine.
(b) Precaution during VSC operation:
(1) Since VSC may be affected by the removal/installa-
tion of the VSC-related parts, do not remove/install
those parts unless absolutely necessary.
(2) When operating on VSC, follow the instructions in
BR section in this manual to surely make prepara-
tions or check after operations.
3. WHEN SERVICING FULL-TIME 4WD VEHICLES
The Full-time 4WD LAND CRUISER is equipped with the me-
chanical lock type center differential system.
During tests using a brake tester or chassis dynamometer, such
as braking force tests or speedometer tests, if only the front or
rear wheels are to be rotated, it is necessary to set the position
of the center differential to FREE or LOCK depending on the
type of the test being performed.