1998 TOYOTA LAND CRUISER brake rotor
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DIC94-02
BR3583
BR3582F00010
RotorSpeed Sensor
Magnet
To ECU
+V
-VHigh Speed
Low Speed
CoilNS
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEMDI-615
808 Author: Date:
2004 LAND CRUISER (RM1071U)
CIRCUIT INSPECTION
DTC
C0200 / 31 - C1239 / 39Speed Sensor Circuit
CIRCUIT DESCRIPTION
The speed sensor detects wheel speed and sends the ap-
propriate signals to the ECU. These signals are used for control
of the ABS & BA & TRAC & VSC control system. The front and
rear rotors each have 48 serrations.
When the rotors rotate, the magnetic field emitted by the perma-
nent magnet in the speed sensor generates AC voltage. Since
the frequency of this AC voltage changes in direct proportion to
the speed of the rotor, the frequency is used by the ECU to de-
tect the speed of each wheel.
DTC No.DTC Detecting ConditionTrouble Area
C0200 / 31
C0205 / 32
C0210 / 33
C0215 / 34
Detection of any of the conditions 1. through 4.:
1. At a vehicle speed of 6 mph (10 km/h) or more, pulses
are not input for 15 sec.
2. Momentary interruption of the speed sensor signal oc-
curs at least 7 times in the time between switching the
ignition switch ON and switching it OFF.
3. Continuous noise occurs into the speed sensor signals
with a vehicle speed at 12 mph (20 km/h) or more.
4. The condition that the speed sensor signal circuit is
open continues for 0.12 sec. or more.
ABS does not function
Brake pedal is not depressed
Parking brake is not set
Rear differential does not lock
Under the above conditions, when the difference in velocity
between the highest rotating and the second highest rotat-
ing wheels is within 1 mph (2 km/h), the slowest wheel ro-
tates at 0 mph (0 km/h), and the second slowest wheel
rotates at 7 mph (12 km/h) for 1 second or more.
Right front, left front, right rear and left rear speed sensor
Each speed sensor circuit
Sensor rotor
C1235 / 35
C1236 / 36
C1238 / 38
C1239 / 39Continuous noise occurs into the speed sensor
signals with a vehicle speed at 12 mph (20 km/h)
or more continues for 5 sec or more.Right front, left front, right rear, left rear speed sensor
Speed sensor rotor
HINT:
DTC No. C0200 / 31 and C1235 / 35 are for the right front speed sensor.
DTC No. C0205 / 32 and C1236 / 36 are for the left front speed sensor.
DTC No. C0210 / 33 and C1238 / 38 are for the right rear speed sensor.
DTC No. C0215 / 34 and C1239 / 39 are for the left rear speed sensor.
Page 872 of 3115
BR3795
OK NG
W04200
Normal Signal Waveform
1 V / Division2 m/s / DivisionGND
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEMDI-619
812 Author: Date:
2004 LAND CRUISER (RM1071U)
4 Check sensor installation.
CHECK:
Check the speed sensor installation.
OK:
The installation bolt is tightened properly and there is
no clearance between the sensor and front steering
knuckle or rear axle carrier.
Torque: 8.0 N´m (82 kgf´cm, 71 in.´lbf)
NG Replace speed sensor.
NOTICE:
Check the speed sensor signal last (See page DI-505).
OK
5 Check speed sensor and sensor rotor serrations.
(REFERENCE) INSPECTION USING OSCILLOSCOPE
PREPARATION:
(a) Remove the skid control ECU with connectors still con-
nected.
(b) Connect the oscilloscope to each of terminals FR+ - FR-,
FL+ - FL-, RR+ - RR- or RL+ - RL- of the skid control
ECU.
CHECK:
Drive the vehicle at about 12 mph (20 km/h), and check the sig-
nal waveform.
HINT:
As vehicle speed (rpm of the wheels) increase, a cycle of
the waveform narrows and the fluctuation in the output
voltage becomes greater.
When noise is identified in the waveform on the oscillo-
scope, error signals are generated due to the speed sen-
sor rotor's scratches, looseness or foreign matter depos-
ited on it.
OK Check and replace skid control ECU.
NG
Page 873 of 3115
R07880
F04443
DI-620- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
813 Author: Date:
2004 LAND CRUISER (RM1071U)
6 Check sensor rotor and sensor tip.
Front:
PREPARATION:
Remove the front axle hub (See page SA-12).
CHECK:
Check the sensor rotor serrations.
OK:
No scratches, missing teeth or foreign matter.
PREPARATION:
Remove the front speed sensor (See page BR-69).
CHECK:
Check the sensor tip.
OK:
No scratches or foreign matter on the sensor tip.
HINT:
If foreign matter (including that on the sensor rotor side) is iden-
tified, remove it and after reassembling, check the output ware-
form.
Rear:
PREPARATION:
Remove the rear axle shaft (See page SA-84).
CHECK:
Check the sensor rotor serrations.
OK:
No scratches, missing teeth or foreign matter.
PREPARATION:
Remove the rear speed sensor (See page BR-72).
CHECK:
Check the sensor tip.
OK:
No scratches or foreign matter on the sensor tip.
HINT:
If foreign matter (including that on the sensor rotor side) is iden-
tified, remove it and after reassembling, check the output ware-
form.
NG Replace speed sensor or rotor.
NOTICE:
Check the speed sensor signal last (See page DI-505).
OK
Check and replace skid control ECU.
Page 894 of 3115
DIC8V-01
DI-518- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
711 Author: Date:
2004 LAND CRUISER (RM1071U)
DIAGNOSTIC TROUBLE CODE CHART
NOTICE:
When removing the part, turn the ignition switch OFF.
HINT:
Using SST 09843-18020 or 09843-18040, connect terminals Tc and E1 of the DLC1 or Tc and CG
of the DLC3.
If any abnormality is not found when inspecting parts, inspect the ECU.
If a malfunction code is displayed during the DTC check, check the circuit listed that code. For details
of each code, turn to the page referred to under the ºSee pageº for respective ºDTC No.º in the DTC
chart.
DTC chart of ABS:
DTC No.
(See Page)Detection ItemTrouble Area
C0278 / 11
(DI-531)Open or short in ABS solenoid relay circuitABS solenoid relay
C0279 / 12
(DI-531)B+ short in ABS solenoid relay circuit
ABS solenoid relay
ABS solenoid relay circuit
C0226 / 21
(DI-528)Open or short in hydraulic brake booster solenoid circuit (SFR
circuit)Hydraulic brake booster
SFRR or SFRH circuit
C0236 / 22
(DI-528)Open or short in hydraulic brake booster solenoid circuit (SFL
circuit)Hydraulic brake booster
SFLR or SFLH circuit
C0246 / 23
(DI-528)Open or short in hydraulic brake booster solenoid circuit (SRR
circuit)Hydraulic brake booster
SRRR or SRRH circuit
C0256 / 24
(DI-528)Open or short in hydraulic brake booster solenoid circuit (SRL
circuit)Hydraulic brake booster
SRLR or SRLH circuit
C1225 / 25
(DI-543)Open or short in hydraulic brake booster solenoid circuit (SA1
circuit)Hydraulic brake booster
SA1 circuit
C1226 / 26
(DI-543)Open or short in hydraulic brake booster solenoid circuit (SA2
circuit)Hydraulic brake booster
SA2 circuit
C1227 / 27
(DI-543)Open or short in hydraulic brake booster
solenoid circuit (SA3 circuit)Hydraulic brake booster
SA3 circuit
C1228 / 28
(DI-543)Open or short in hydraulic brake booster solenoid circuit (STR
circuit)Hydraulic brake booster
STR circuit
C0200 / 31*1
(DI-615)Right front wheel speed sensor signal malfunction
C0205 / 32*1
(DI-615)Left front wheel speed sensor signal malfunctionRight front, left front, right rear and left rear speed sensor
Eh d i itC0210 / 33*1
(DI-615)Right rear wheel speed sensor signal malfunction
Each speed sensor circuit
Sensor rotor
C0215 / 34*1
(DI-615)Left rear wheel speed sensor signal malfunction
C1235 / 35
(DI-615)Foreign matter is attached on the tip of the right front sensorRight front, left front, right rear, left rear speed sensor
C1236 / 36
(DI-615)Foreign matter is attached on the tip of the left front sensor
Right front, left front, right rear, left rear s eed sensor
Sensor rotor
C1237 / 37
(DI-557)Size of some tires is different from the other tiresTire size
Page 895 of 3115
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEMDI-519
712 Author: Date:
2004 LAND CRUISER (RM1071U)C1238 / 38
(DI-615)
Foreign matter is attached on the tip of the right rear sensorRight front, left front, right rear, left rear speed sensor
C1239 / 39
(DI-615)Foreign matter is attached on the tip of the left rear sensor
Right front, left front, right rear, left rear s eed sensor
Sensor rotor
C1241 / 41
(DI-558)Low battery positive voltage or abnormally high battery
positive voltageBattery
IC regulator
Power source circuit
C1242 / 42*2
(DI-561)Open in IG2 circuit
Battery
IC regulator
Power source circuit
C1243 / 43
(DI-564)Malfunction in deceleration sensor (constant output)Deceleration sensor
Wire harness for deceleration sensor system
C1244 / 44
(DI-567)Open or short in deceleration sensor circuitDeceleration sensor
Deceleration sensor circuit
C1245 / 45
(DI-564)Malfunction in deceleration sensorDeceleration sensor
Wire harness for deceleration sensor system
C1246 / 46
(DI-570)Malfunction in master cylinder pressure sensorMaster cylinder pressure sensor
Master cylinder pressure sensor circuit
C1249 / 49
(DI-573)Open in stop light switch circuitStop light bulb
Stop light switch circuit
C1251 / 51*2
(DI-577)
Pump motor is locked
Open circuit in pump motor groundHydraulic brake booster pump motor
C1252 / 52*2
(DI-580)Hydraulic brake booster pump motor malfunction
Hydraulic brake booster pump motor
Hydraulic brake booster pump motor circuit
Pressure switch (PH or PL)
C1253 / 53*2
(DI-586)Hydraulic brake booster pump motor relay malfunction
ABS motor1 or ABS motor 2 relay
ABS motor1 or ABS motor 2 relay circuit
Hydraulic brake booster pump motor circuit
C1254 / 54*2
(DI-592)Pressure switch malfunctionPressure switch (PH or PL)
Pressure switch circuit
C1256 / 56*2
(DI-595)Accumulator low pressure malfunction
Accumulator
Pressure switch (PH or PL)
Hydraulic brake booster pump motor
C1257 / 57*2
(DI-602)Power supply drive circuit malfunction
Battery
Power source circuit
Skid control ECU
C1203 / 59
(DI-536)ECM communication circuit malfunction
TRC+ or TRC- circuit
ENG+ or ENG- circuit
ECM
C1268 / 68
(DI-605)Transfer L4 position signal transmission failureTransfer L4 position switch
Transfer L4 position switch circuit
Always ON
(DI-621)Malfunction in skid control ECU
Battery
IC regulator
Power source circuit
Skid control ECU
*1: As the DTC cannot be erased by replacing parts alone do either of the following operations.
(1) Clear the DTC (See page DI-505).
(2) At a speed of 20 km/h (12 mph), drive the vehicle for 30 sec. or more.
*
2: Using the following table, troubled parts can be specified.
Page 899 of 3115
DIC8X-01
F17606
ABS Motor 1
Relay
ABS Motor 2
RelayABS Solenoid
Relay
Master Cylinder Pressure Sensor
Hydraulic Brake Booster
Check
Connector
Front Speed
Sensor Rotor
Front Speed Sensor
Engine Room J/BNeutral Start SwitchRear Speed Sensor
RotorRear Speed
Sensor
Steering Angle Sensor
Engine and ECT
ECU
Yaw Rate Sensor and
Deceleration Sensor DLC3
Stop Light Switch Skid Control ECU with
Warning Buzzer Combination Meter
ABS Warning Light
VSC TRC Warning Light
BRAKE Warning Light
VSC OFF Indicator Light
SLIP Indicator Light
ACTIVE TRC
Indicator Light
DI-522- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
715 Author: Date:
2004 LAND CRUISER (RM1071U)
PARTS LOCATION
Page 908 of 3115
F06425
Hand-held
Tester
DLC3
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEMDI-513
706 Author: Date:
2004 LAND CRUISER (RM1071U)
(b) In case of using hand-held tester:
Check the sensor signal.
(1) Hook up the hand-held tester to the DLC3.
(2) Do step (3) to (10) on the previous page.
(3) Read the DTC by following the prompts on the tes-
ter screen.
HINT:
Please refer to the hand-held tester operator's manual for fur-
ther details.
DTC of speed sensor signal check function:
Code No.DiagnosisTrouble Area
C1271 / 71Low output voltage in right front speed sensor
Right front speed sensor
Sensor installation
Sensor rotor
C1272 / 72Low output voltage in left front speed sensor
Left front speed sensor
Sensor installation
Sensor rotor
C1273 / 73Low output voltage in right rear speed sensor
Right rear speed sensor
Sensor installation
Sensor rotor
C1274 / 74Low output voltage in left rear speed sensor
Left rear speed sensor
Sensor installation
Sensor rotor
C1275 / 75Abnormal change in output voltage of right front speed
sensorRight front speed sensor rotor
C1276 / 76Abnormal change in output voltage of left front speed
sensorLeft front speed sensor rotor
C1277 / 77Abnormal change in output voltage of right rear speed
sensorRight rear speed sensor rotor
C1278 / 78Abnormal change in output voltage of left rear speed
sensorLeft rear speed sensor rotor
C1279 / 79Deceleration sensor is faultyDeceleration sensor
Sensor installation
C1281 / 81Master cylinder pressure sensor output signal is faultyMaster cylinder pressure sensor
C1282 / 82Transfer indicator (center diff. lock) switch malfunctionTransfer indicator (center diff. lock) switch
C1283 / 83Transfer L4 position switch malfunctionTransfer L4 position switch
6. In case of not using hand-held tester:
VSC SENSOR CHECK (TEST MODE)
NOTICE:
When having replaced the yaw rate sensor, deceleration
sensor and/or ECU, perform a zero point calibration of the
yaw rate and deceleration sensors (See step 8.).
HINT:
If the ignition switch is turned from the ON to the ACC or LOCK
during test mode, DTC will be erased.
Page 2901 of 3115
SA144-04
F04367
F04368
F04369
F04370SST SA-12
- SUSPENSION AND AXLEFRONT AXLE HUB
1962 Author: Date:
2004 LAND CRUISER (RM1071U)
REMOVAL
1. REMOVE FRONT WHEEL
2. REMOVE BRAKE CALIPER
(a) Remove the bolt and disconnect the flexible hose from
the steering knuckle.
(b) Remove the 2 bolts, washers and brake caliper.
(c) Support the brake caliper securely.
3. REMOVE FLANGE
(a) Using a screwdriver and hammer, remove the grease cap
from the flange.
(b) Using a snap ring expander, remove the snap ring.
(c) Remove the 6 nuts and washers.
(d) Install the 6 nuts temporarily to protect the threads of the
stud bolts.
(e) Using a brass bar and hammer, tap on the bolt heads and
remove the 6 nuts and cone washers.
(f) Remove the flange and gasket.
4. REMOVE AXLE HUB WITH DISC
(a) Using a screwdriver, release the lock washer.
(b) Using SST, remove the lock nut.
SST 09607-60020
(c) Remove the lock washer.
(d) Using SST, remove the adjusting nut.
SST 09607-60020
(e) Remove the axle hub with disc.
NOTICE:
Be careful not to damage the ABS speed sensor rotor and
oil seal.
(f) Remove the claw washer and bearing from the axle hub.