2001 TOYOTA SEQUOIA Page 18

DI±1008
± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1202 Author: Date:
2005 SEQUOIA (RM1146U)
3 Replace the translate ECU and check if the trouble occurs again.
PREPARATION:
(a) Clear the translate DTC (See page DI±911).
(b) Turn the ignition switch OFF.
CHECK:
Turn the ignition switch to the ON position, and check if the same DTC is stored in the memory.
PREPARATION:
DTC 65 is not outputA
DTC 65 is outputB
B Check and replace suspension control ECU,
ECM or CAN communication system.
A
END

F19152
Translate ECU
GND
± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
DI±1011
1205 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check DTC of the VSC (See page DI±911)
CHECK:
Check skid control ECU DTC.
RESULT:
DTC is not outputA
DTC is outputB
B Repair circuit indicated by the output code
(See page DI±921).
A
2 Check for open circuit in harness and connector between GND terminal of the
translate ECU and body ground (See page IN±35).
PREPARATION:
Disconnect the translate ECU connector.
CHECK:
Measure the resistance between the GND terminal and body
ground.
OK:
Continuity
NG Repair or replace harness or connector (Trans-
late ECU GND circuit).
OK

DI±1012
± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1206 Author: Date:
2005 SEQUOIA (RM1146U)
3 Replace the translate ECU and check if the trouble occurs again.
PREPARATION:
(a) Clear the translate DTC (See page DI±911).
(b) Turn the ignition switch OFF.
CHECK:
Turn the ignition switch to the ON position, and check if the same DTC is stored in the memory.
PREPARATION:
DTC 94 is not outputA
DTC 94 is outputB
B Check and repair suspension control ECU, ECM
or CAN communication system.
A
END

± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
DI±1013
1207 Author: Date:
2005 SEQUOIA (RM1146U)
DTC Normal Code Malfunction in Translate ECU
CIRCUIT DESCRIPTION
If any trouble occurs in the engine control system, the skid control ECU prohibits ABS & VSC control.
DTC No.DTC Detecting ConditionTrouble Area
Normal Code
Conditions 1., 2. or 3. continue for 5 sec. or more:
1. Engine malfunction signal is sent from ECM.
2. Shift malfunction signal is sent from ECM.
3. The shift position is other than P and N, and P range
input voltage is 8 V or more.

ECM circuit

ECM

Brake fluid level

Brake fluid level warning switch circuit

Steering angle sensor

Translate ECU

Skid control ECU

Vehicle CAN

VSC+, VSC± circuit (CAN1 communication system)
INSPECTION PROCEDURE
1 Is DTC output for ECM?
Check DTC on page DI±43.
YES Repair engine control system according to the
output code (See page DI±58).
NO
2 Check the DTC of the ABS and VSC (See page DI±911).
CHECK:
Check skid control ECU DTC.
RESULT:
Only DTC ºC1203/53º of the VSC system is outputA
Except DTC ºC1203/53º of the VSC system are outputB
B Repair ABS and VSC control system according
to the code output (See page DI±921).
A
DI6OF±12

DI±1014
± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1208 Author: Date:
2005 SEQUOIA (RM1146U)
3 Replace the translate ECU and check if the trouble occurs again.
PREPARATION:
(a) Clear the DTC (See page DI±911).
(b) Turn the ignition switch OFF.
CHECK:
Turn the ignition switch to the ON position, and check if the same DTC is stored in the memory.
PREPARATION:
DTC is not outputA
DTC is outputB
B Replace skid control ECU
(See page BR±52).
NOTICE:
When replacing the skid control ECU, perform zero point
calibration (See page DI±897).
A
END

± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
DI±1015
1209 Author: Date:
2005 SEQUOIA (RM1146U)
DTC Non ± Code Translate ECU malfunction
CIRCUIT DESCRIPTION
Translate ECU DTCs can be read by blinks of the brake warning light (see page DI±911).
DTC No.DTC Detecting ConditionTrouble Area
Non ± code*Translate ECU internal malfunction is detected.

Brake warning light circuit

Tc terminal circuit

Translate ECU
*: Neither the normal system code nor a trouble code is output.
INSPECTION PROCEDURE
1 Check the BRAKE warning light circuit (See page DI±1033).
OK:
BRAKE warning light circuit is normal.
NG Repair or replace the BRAKE warning light cir-
cuit.
OK
2 Check the Tc terminal circuit (See page DI±1055).
OK:
Tc terminal circuit is normal.
NG Repair or replace the Tc terminal circuit.
OK
Check and replace the translate ECU.
DI942±03

F16990
ON
IG1
GND
DI±1018
± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1212 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Is DTC output?
Check DTC on page DI±911.
YES Repair circuit indicated by the output code
(See page DI±921).
NO
2 Check that the skid control ECU connector is securely connected to the skid
control ECU (See page IN±35).
NG Connect the connector to the skid control ECU.
OK
3 Check voltage between terminals IG1 and GND of the skid control ECU connec-
tor.
PREPARATION:
Disconnect the skid control ECU connector.
CHECK:
(a) Turn the ignition switch to the ON position.
(b) Measure the voltage between terminals IG1 and GND of
the skid control ECU harness side connector.
OK:
Voltage: 10 to 14 V
NG Check for open and short circuit in harness and
connector between ECU±IG fuse and skid con-
trol ECU (See page IN±35).
OK

± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
DI±1019
1213 Author: Date:
2005 SEQUOIA (RM1146U)
4 Check battery positive voltage.
CHECK:
Check the battery positive voltage.
OK:
Voltage: 10 to 14 V
NG Check and repair the charging system
(See page CH±1).
OK
5 Check the Tc terminal circuit (See page DI±1055).
OK:
Tc terminal circuit is normal
NG Repair or replace the Tc terminal circuit.
OK