Toyota Sequoia (2005). Manual - part 295

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DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

DI–975

1169

DTC

C1337 / 37

Some Tire Are Different in Size From
the Other Tires

CIRCUIT DESCRIPTION

Skid control ECU measure the speed of each wheel by receiving signals from speed sensor. These signals
are used for recognizing all 4 wheels are operating properly. Therefore, all wheel signals must be equal.

DTC No.

DTC Detecting Condition

Trouble Area

C1337 / 37

1 or 2 tires of different size are used for driving.

Tire size

INSPECTION PROCEDURE

1

Check tire size.

CHECK:
Check tire size and condition of all 4 wheels.

NG

Replace tires so that all 4 tires are the same in
size.

OK

2

Check speed sensor (See page 

DI–925

).

NG

Replace speed sensor.

OK

3

Check speed sensor rotor (See page 

DI–925

).

NG

Replace speed sensor rotor.

OK

DI93T–03

DI–976

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DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

1170

4

Check harness and connector between speed sensor and skid control ECU 
(See page 

IN–35

).

NG

Repair or replace harness or connector.

OK

Replace skid control ECU 
(See page 

BR–52

).

NOTICE:
When replacing the skid control ECU, perform the zero point calibration (See page 

DI–897

).

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DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

DI–977

1171

DTC

C1340 / 47

Center DIFF. Lock Circuit Malfunction

CIRCUIT DESCRIPTION

This circuit sends the signal to the ECU by detecting that the transfer center differential is in the ”LOCK” posi-
tion.

DTC No.

DTC Detecting Condition

Trouble Area

C1340 / 47

Center diff. lock position switch signal does not change

Center diff. lock position switch

Center diff. lock position switch circuit

Center diff. lock Indicator light circuit

Translate ECU

DIDMD–01

F19774

Translate Shift Actuator

ABS & VSC Actuator 
(Skid Control ECU)

VSC–

CD

EXI2

CSW

VSC+

7

T5

11

T5

29

T5

31

T5

26

T5

L

L

W

BR–Y (4WD)

W

7

IL2

6

IL2

6

S1

2

S1

CANH

CANL

Sub J/B No.3

Y–G (4WD)

BR–Y

9

3C

9

3A

9

3B

A10 
ADD Actuator

ADD

GND

BR–Y

Sub J/B No.4

8

4B

7

4A

7

4B

8

4A

L–W

L–W

(4WD)

4WD 
Control ECU

4

F23

16

F23

20

F23

11

F23

19

F23

3

F23

6

F23

DL

IND2

IG

ADD

P1

IND3

IND1

Y–B

L–W

BR–Y

L–W

BR–Y

BR–Y

BR–Y

G–W

Y–B

GR

B–Y

C6 
Combination Meter

Center Diff. Lock

4LO

4HI

24

B–O

GR

GR

GR

GR

W–B

W–B

W–B

W–B

W–B

W–B

1

3

D

B

EC1

EB5

J51

J52

6

4

EC1

EB5

A

A

A J41 

J/C

IG4

21

B–Y

Instrument Panel J/B

I18 
Ignition SW

B–O

W–R

W

B–Y

B–R

W–R

W–L

W–L

W–R

4WD

IGN1

AM1

AM1

IG1

AM2

IG2

2

6

4

1C

2

1C

3

1C

6

1C

8

1D

11

1H

7

1J

1

1L

1

2

3

4

J/C

1

2

1

5

4

5

6

3

4

DI–978

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DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

1172

WIRING DIAGRAM