Page 869 of 3115
F17757
FSS
FL+
FL-
FR+
FR-
RL+
RL-
RR+
RR-
RSS A41
A41
A41
A41
A41
A42
A42
A42
A42
A42 B
BB
R
G
L
P A12
ABS Speed
Sensor Front LH
IA2
BD3 BF2A13
ABS Speed
Sensor Front RH(Shielded)
A35
ABS Speed
Sensor
Rear LHJ2
J/C
W-R
42
21
R56
15
14 7
6
1
96
5
10
2
11
7
816A
A
A
W-L9 J2
J/C2120 191813 1415 16 25
R
G
B
WB
WB
W R
G R
G
A36
ABS Speed
Sensor
Rear RH 1
21
2ABS & BA & TRAC
& VSC ECU
(Shielded)
(Shielded)
(Shielded)(Shielded)
(Shielded)
(Shielded)(Shielded) G
B
WIA2
IA2
IA2
IA2
IA2 BF2
BF2
BF2BD3
BD3
BD3
BD3
BD3 DI-616
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
809 Author: Date:
2004 LAND CRUISER (RM1071U)
WIRING DIAGRAM
Page 870 of 3115
F04508
LOCK
12
12RH Side LH Side
2
4
4 2
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEMDI-617
810 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 speed 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 DATALIST mode on the hand-held tester.
CHECK:
Check that there is no difference between the speed value output from the speed sensor displayed on the
hand-held tester and the speed value displayed on the speedometer when driving the vehicle.
OK:
There is almost no difference from the displayed speed value.
HINT:
There is tolerance of ± 10 % in the speedometer indication.
OK Go to step 4.
NG
2 Check speed sensor.
Front:
PREPARATION:
(a) Make sure that there is no looseness at the connector's
locking part and connecting part of the connector.
(b) Disconnect the speed sensor connector.
CHECK:
LH side:
Measure resistance between terminals 2 and 4 of the
speed sensor connector.
RH side:
Measure resistance between terminals 1 and 2 of the
speed sensor connector.
OK:
Resistance: 0.92 to 1.22 kW
CHECK:
LH side:
Measure resistance between terminals 2 and 4 of the
speed sensor connector and body ground.
RH side:
Measure resistance between terminals 1 and 2 of the
speed sensor connector and body ground.
Page 871 of 3115
F02833
2121 LOCK
DI-618- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
811 Author: Date:
2004 LAND CRUISER (RM1071U)
OK:
Resistance: 1 MW or higher
Rear:
PREPARATION:
(a) Make sure that there is no looseness at the connector's
locking part and connecting part of the connector.
(b) Disconnect the speed sensor connector.
CHECK:
Measure resistance between terminals 1 and 2 of the speed
sensor connector.
OK:
Resistance: 1.0 to 1.4 kW
CHECK:
Measure resistance between terminal 1 or 2 of the speed sen-
sor connector and body ground.
OK:
Resistance: 1 MW or higher
NG Replace speed sensor.
NOTICE:
Check the speed sensor signal last (See page DI-505).
OK
3 Check for open and short circuit in harness and connector between each speed
sensor and ECU (See page IN-36).
NG Repair or replace harness or connector.
OK
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 882 of 3115
F17760
ABS & BA & TRAC
& VSC ECU J/B No. 7 D1
DLC1
Cowl Side J/B LH Cowl Side
J/B RHTS TS
E1
TS
CGA42 7D
7B
IF
2D II EB3BW
W-BW W
W-B W-B
W-B
1D7
DLC3
18
4 166
2
512
3
127D
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEMDI-653
846 Author: Date:
2004 LAND CRUISER (RM1071U)
Ts Terminal Circuit
CIRCUIT DESCRIPTION
The sensor check circuit detects abnormalities in the speed sensor signal which cannot be detected by the
DTC check.
Connecting terminals Ts and E
1 of the DLC1 starts the check.
WIRING DIAGRAM
DICAD-01
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.
