Page 857 of 3115
F17749
ABS & BA & TRAC
& VSC ECU
EXI2 A432
B-L
3B 20
3Q54Cowl Side J/B RH
SB
IX15
B-L
32
B-L
EB13
B-LD5
Detection SW
1
2R-L
EB111
R-L
IN214
R-L
Ib26
R-L
3E3 GAUGE2
3 5
21 IG1 No.3 Relay
3C1
3Q 39
2E 39AM1
2C
II F161B-G
J/B No.2
ALT
J/B No.3 B-G
SB
B-R 2Q77
2E 37Cowl Side J/B LH
L-B
I18
Ignition SW
42IG1 AM16D J/B No.6
6D31
1 Cowl Side J/B RH
FL Block
F171
Battery Cowl Side J/B LH
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEMDI-605
798 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC C1268 / 68 Transfer L4 Position Switch Circuit
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C1268 / 68Open or short circuit in transfer L4 position switch.Transfer L4 position switch
Transfer L4 position switch circuit
WIRING DIAGRAM
DIC9Z-01
Page 858 of 3115
F17610
EXI2
(-)
(+) ON
DI-606- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
799 Author: Date:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
1 Check voltage between terminal EXI2 of skid control ECU and body ground.
PREPARATION:
Remove the skid control ECU with connectors still connected.
CHECK:
(a) Turn the ignition switch ON.
(b) Measure voltage between terminal EXI2 of the skid con-
trol ECU and body ground when the transfer is in the L4
position.
OK:
Voltage: 10 to 14 V
OK Proceed to next circuit inspection shown in
problem symptoms chart (See page DI-526).
NG
2 Check transfer L4 position switch ( See page TR-49).
NG Replace transfer L4 position switch.
OK
3 Check for open or short circuit in harness and connector between transfer L4
position switch and skid control ECU ( See page IN-36).
NG Repair or replace harness or connector.
OK
Page 859 of 3115
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEMDI-607
800 Author: Date:
2004 LAND CRUISER (RM1071U)
4 Check for open or short circuit in harness and connector between skid control
ECU and ECM (See page IN-36).
NG Repair or replace harness or connector.
OK
Check and replace skid control ECU.
Page 860 of 3115

DI-608- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
801 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC C1290 / 66 Zero Point Calibration of Steering Sen-
sor Undone
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C1290 / 66
The steering sensor zero point calibration position vastly
differs from the recorded value.
(The angle becomes larger)Yaw rate sensor zero point calibration undone
Steering angle sensor zero point calibration undone
INSPECTION PROCEDURE
1 Perform zero point calibration. (See page DI-505)
HINT:
This code is output when a problem occurs in a zero point calibration of the steering angle sensor and yaw
rate sensor.
Therefore, clear the stored zero point calibration data and correct the zero points.
(a) Clear the zero point calibration data.
(b) Perform a zero point calibration of the steering sensor and yaw rate sensor.
NEXT
2 Is DTC output?
(a) Clear the DTCs.
(b) Turn the ignition switch to the ON position.
(c) Are the same DTCs detected?
NO Proceed to next circuit inspection shown in
problem symptoms table.
YES
No problem.
HINT:
When the registered data is not equal to the input data, the DTC will be output.
DICA0-01
Page 861 of 3115

F17752
ABS & BA & TRAC
& VSC ECU Y1
Yaw Rate Sensor
ShieldedGL1
GL2
YD
VYS
YAW
GYAW
YSS A43
1827 289 191022
G
Y
L
B
W
R 4
2
6
8
1
5A43
A43
A43
A43
A43
A43 IG4
IG4
IG4
IG4
IG4
IG4
IG416
17
21
19
20
18
22
ShieldedG
Y
L
B
W
R GL1
GL2
YD
VYS
YAW 2
GYAW
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEMDI-609
802 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC C1336 / 39 Zero Point Calibration of Deceleration
Sensor Undone
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C1236 / 39
When either of the following 1. or 2. is detected:
1. In TEST mode, the shift lever is shifted to other than P
position within 2 sec. after ECU terminal IG1 is turned
ON for the first time.
2. When the deceleration sensor zero point recorded in
ECU is deleted.
Deceleration sensor
Deceleration sensor circuit
PNP switch circuit (R position)
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check whether zero point calibration of yaw rate (deceleration) sensor has been
done or not.
PREPARATION:
Shift the shift lever in the P position and turn the ignition switch ON. Repeat connecting and releasing Ts
and E
1 terminals of the DLC1 4 times or more for 8 sec. After this, turn the ignition switch OFF and after
connecting terminals Ts and E
1, turn it ON again.
DICA1-01
Page 862 of 3115
DI-610- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
803 Author: Date:
2004 LAND CRUISER (RM1071U)
2 Carry out yaw rate (deceleration) sensor zero point calibration and confirm it by
VSC TRAC warning light.
OK:
VSC TRAC warning light blinks
OK No problem.
NG
3 Check DTC for the VSC (See page DI-505).
*1 :Other than DTC C1336 / 39 is output.
*
2 :DTC C1336 / 39 only is output.
*
1Repair ABS control system according to the
code output.
*
2
4 Check for open and short circuit in harness and connector between PNP switch
(P position) and skid control ECU and ECM (See page IN-36).
NG Repair or replace harness or connector.
OK
5 Check for open and short circuit in harness and connector between yaw rate
(deceleration) sensor and skid control ECU (See page IN-36).
NG Repair or replace harness or connector.
OK
Page 863 of 3115
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEMDI-61 1
804 Author: Date:
2004 LAND CRUISER (RM1071U)
6 Check yaw rate (deceleration) sensor (See page DI-505).
NG Replace yaw rate sensor.
OK
Check and replace skid control ECU.
Page 864 of 3115
F17776
ABS & BA & TRAC
& VSC ECU
Cowl Side J/B RH
Combination Meter
Cowl Side J/B RH
Cowl Side J/B LHI18
Ignition SW
Engine Room J/B
FL Block BatteryEXI
A433
P-B
3B3 3Q56SB 2
IX1
2 1 W-B
C1210
C1314
SB
W-B
EC
MAIN
F152
B-G1C1 AM2
1B9
W-R 2A 10
2E41
W-R
7AM2IG2
6A
AJ4
J/C
SB
3E4 MET
3Q73Q 28
SB P-B
B-R Center
Diff. LockD4
Detection SW
(Center Diff. Lock) DI-612
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
805 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC C1340 / 47 Center Differential Lock Circuit
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C1240 / 47Open or short in center differential lock circuit.Center differential lock system
Center differential lock circuit
WIRING DIAGRAM
DICA2-01