Page 1257 of 4323
F19788
6
IL2
7 CANL
S12
VSC+ 6
TC 28Translate ECU
CANH11
VSC±
TC
CG
J43
J/CIG 4A55
4BP±B W
L ABS & VSC Actuator
(Skid Control ECU)
7
S1T5
T5
T5 W
L
IL2
P±B D6
Data Link Connector 3
O 13
4Sub J/B No. 4
O
AA (*) CAN1 Circuit
(*)
(*)
(*) (*)
± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
DI±1055
1249 Author: Date:
2005 SEQUOIA (RM1146U)
Tc Terminal Circuit
CIRCUIT DESCRIPTION
Connecting terminals Tc and CG of the DLC3 causes the skid control ECU to indicate the DTC by blinking
the ABS warning light, VSC TRAC warning light and BRAKE warning light.
WIRING DIAGRAM
DI94B±04
Page 1258 of 4323
F09678
ON
DLC3
Tc
CG (+)(±)
DI±1056
± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1250 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check voltage between terminals Tc and CG of the DLC3.
PREPARATION:
Turn the ignition switch to the ON position.
CHECK:
Measure the voltage between terminals Tc and CG of the DLC3.
OK:
Voltage: 10 to 14 V
OK If ABS warning light does not blink even after Tc
and CG have been connected, the ECU may be
defective.
NG
2 With ignition switch OFF, check for open and short circuit in harness and con-
nector between skid control ECU and DLC3, DLC3 and body ground (See page
IN±35).
NG Repair or replace harness or connector.
OK
Check and replace translate ECU or skid con-
trol ECU (See page BR±52).
NOTICE:
When replacing the skid control ECU, perform the zero point calibration (See page DI±897).
Page 1259 of 4323
D6
DataLink
Connector
F19789
ABS & VSC Actuator
(Skid Control ECU)
R±L
T5 27
TS2440
S1
12
O
IG TS
CG
4R±LR±L
R±LTS
IL1 Translate ECU
3
O
AA J43
J/C4C 4B
4A6 66 Sub J/B No.4
(*) CAN1 Circuit (*)
± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
DI±1057
1251 Author: Date:
2005 SEQUOIA (RM1146U)
Ts Terminal Circuit
CIRCUIT DESCRIPTION
In sensor check mode (test mode), a malfunction of the speed sensor that cannot be judged when the vehicle
is stopped is judged while driving.
Transition to sensor check mode (test mode) can be performed by connecting terminals Ts and CG of the
DLC3 and turning the ignition switch from OFF to ON.
WIRING DIAGRAM
DI94A±05
Page 1260 of 4323
F18920
DLC3
Ts
CG ON
(+) (±)
DI±1058
± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1252 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check voltage between terminals Ts and CG of the DLC3.
CHECK:
(a) Turn the ignition switch to the ON position.
(b) Measure the voltage between terminals Ts and CG of the
DLC3.
OK:
Voltage: 10 to 14 V
OK If ABS warning light does not blink even after Ts
and CG are connected, the ECU may be defec-
tive.
NG
2 Check for open and short circuit in harness and connector between skid control
ECU and DLC3, DLC3 and body ground (See page IN±35).
NG Repair or replace harness or connector.
OK
Check and replace skid control ECU
(See page BR±52).
NOTICE:
When replacing the skid control ECU, perform the zero point calibration (See page DI±897).
Page 1261 of 4323
F13441
± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
DI±1059
1253 Author: Date:
2005 SEQUOIA (RM1146U)
Check for Fluid Leakage
Check actuators or hydraulic lines for fluid leakage.
DI94C±03
Page 1262 of 4323
DIDHX±01
F17795
F19734
Bypass Wire
F17797Tester Probe
DI±1060
± DIAGNOSTICSCAN COMMUNICATION SYSTEM
1254 Author: Date:
2005 SEQUOIA (RM1146U)
CAN COMMUNICATION SYSTEM
PRECAUTION
1. BUS LINE REPAIR
(a) After repairing the bus line with solder, wrap the repaired
part with vinyl tape.
NOTICE:
The CANL bus line and CANH bus line must be
installed together all the time.
When installing, make sure to twist them.
CAN bus lines are likely to be influenced by noise if
the bus lines are not twisted.
The difference in length of the CANL bus line and
CANH bus line should be within 100 mm (3.937 in.).
Leave approximately 80 mm (3.150 in.) loose in the
twist around the connector.
(b) Do not use a bypass wire between the connectors.
NOTICE:
The feature of the twisted wire harness will be lost if you
use a bypass wire.
2. CONNECTOR HANDLING
(a) When inserting tester probes into a connector, insert them
from the rear of the connector.
Page 1263 of 4323
F17798
Repair Wire
± DIAGNOSTICSCAN COMMUNICATION SYSTEM
DI±1061
1255 Author: Date:
2005 SEQUOIA (RM1146U)
(b) If it is impossible to check continuity from the rear of the
connector, then use a repair wire to check the connector.
3. PRECAUTION FOR DISCONNECTING THE BATTERY CABLE
NOTICE:
When disconnecting the battery terminal, initialize the following system after the terminal is recon-
nected.
System NameSee Page
Back Door Power Window Control SystemBE±77
Page 1264 of 4323
DIDHY±01
F19696
Junction Connector
Suspension
Control ECU
Translate ECU ECM
DLC3
DI±1062
± DIAGNOSTICSCAN COMMUNICATION SYSTEM
1256 Author: Date:
2005 SEQUOIA (RM1146U)
LOCATION