Toyota Sequoia (2005). Manual — part 301

F19196

E5
ECM

CANL

CANH

34

33

W

L

2

J53

1

J53

2

J55

1

J55

J/C

W

R

16

T5

14

T5

ENG–

ENG+

VSC+

VSC–

7

T5

11

T5

L

W

W

L

7

IL2

6

IL2

2

6

S1 ABS & VSC Actuator
(Skid Control ECU)

Translate
ECU

IG1

1

T5

B–R

J37

J37

J/C

Sub J/B No.3

8

3C

8

3A

B–R

B–R

B–Y

W–L

I18
Ignition SW

W

Instrument Panel J/B

4

1F

1

1L

4

1C

6

1C

ECU–IG

AM1

AM1

IG1

ALT

Battery

GND

40

T5

J43
J/C

O

A

A

O

IG

1

2

CANH

CANL

A

A

8

5

B

F10
Fusible Link
Block

(*1)

(*1)

(*2)

(*2)

(*1) Vehicle CAN Circuit
(*2) CAN1 Circuit

(*1)

(*1)

(*2)

(*2)

–

DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

DI–999

1193

WIRING DIAGRAM

F19152

Translate ECU

GND

DI–1000

–

DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

1194

INSPECTION PROCEDURE

1

Check the DTC of the VSC (See page

DI–911

).

CHECK:
Check skid control ECU DTC.
RESULT:

DTC is not output

A

DTC (C1203/53) is output

B

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.

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

–

DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

DI–1001

1195

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 53 is not output

A

DTC 53 is output

B

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

F19197

S1 ABS & VSC Actuator
(Skid Control ECU)

Translate
ECU

CANH

CANL

6

2

L

W

L

W

7

IL2

6

IL2

7

T5

11

T5

VSC+

VSC–

IG1

1

T5

B–R

J37

J37

J/C

B–R

B–R

8

3C

8

3A

I18
Ignition SW

4

1F

4

1C

1L

6

1C

ECU–IG

AM1

AM1

IG1

B–Y

2

W–L

W

ALT

Battery

24

T5

40

T5

LVL2

GND

23

IA1

9

IA5

Y–L

Y–L

W–B

O

A

O

A

A

B1
Brake Fluid
Level Warning SW

J43
J/C

IG

1

Sub J/B No.3

Instrument Panel J/B

8

5

F10
Fusible Link Block

B

1

1

2

2

A

A

1

(*) CAN1 Circuit

(*)

(*)

(*)

(*)

DI–1002

–

DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

1196

DTC

58

Malfunction of Brake Fluid Level Warning
Switch

CIRCUIT DESCRIPTION

The brake fluid level warning switch sends the appropriate signal to the translate ECU.
This signal indicates a drop in brake fluid level.

DTC No.

DTC Detecting Condition

Trouble Area

58

Brake fluid level warning switch connector is disconnected

for 1 sec. or more.

Brake fluid level warning switch is ON for 30 sec. or more.

Brake fluid level warning switch circuit

Brake fluid level warning switch

Brake fluid reservoir level

Translate ECU

WIRING DIAGRAM

DIDMI–01