Toyota Sequoia (2005). Manual — part 298

M2
Master Cylinder
Pressure Sensor No.1

F19776

ABS & VSC Actuator
(Skid Control ECU)

IG1

13

S1

B–R

1

IL1

B–R

B–R

B–R

A

J38

J/C

A

J37

8

3C

8

3A

Sub J/B No.3

B–R

Instrument Panel J/B

4

1F

1

1L

4

1C

6

1C

ECU–IG

AM1

W

B–Y

W–L

B–Y

W–L

I18
Ignition SW

1

2

AM1

IG1

Y1
Yaw Rate (Deceleration)
Sensor

(Shield)

G

5

3

R

R

12

11

S1

24

S1

VYS

GYAW

E1

VYS

GYAW

BR

(Shield)

B

R

W

30

S1

28

S1

29

S1

VCM

PMC

VCM

PMC

E1

BR

A

A

A

BR

J28
J/C

Instrument Panel J/B

9

1F

12

1K

W–B

W–B

BR

J8
J/C

IE

IG

(Shield)

1

2

3

B

R

W

26

S1

25

S1

27

S1

VCM2

PMC2

E2

VCM2

PMC2

E2

1

S1

32
S1

GND1

GND2

W–B

W–B

W–B

W–B

17

IL1

9

IL1

A

A

J18
J/C

8

5

ALT

F10
Fusible
Link
Block

1

2

B

Battery

IM

A

J18
J/C

M3
Master Cylinder
Pressure Sensor No.2

G

11

10

IL1

IL1

IL1

1

2

3

–

DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

DI–987

1181

WIRING DIAGRAM

F19146

Master Cylinder
Pressure Sensor
No. 1

Master Cylinder
Pressure Sensor
No. 2

VCM

E1

VCM2

E2

M3

M2

DI–988

–

DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

1182

INSPECTION PROCEDURE

1

Check battery positive voltage.

OK:

Voltage: 10 to 14 V

NG

Check and repair the charging system
(See page

CH–1

).

OK

2

Check master cylinder pressure sensor No. 1 and No. 2.

PREPARATION:
Disconnect the master cylinder pressure sensor connectors
No. 1 and No. 2.
CHECK:

(1)

Turn the ignition switch to the ON position.

(2)

Measure the voltage between terminal VCM and
E1, VCM2 and E2 of the harness side connector.

OK:

Voltage: 4.5 to 5.5 V

NG

Go to step 4.

OK

F19145

Yaw Rate
(Deceleration)
Sensor

VYS

GYAW

–

DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

DI–989

1183

3

Check yaw rate (deceleration) sensor.

PREPARATION:
Disconnect the yaw rate (deceleration) sensor connector.
CHECK:

(1)

Turn the ignition switch to the ON position.

(2)

Measure the voltage between terminal GYAW and
VYS of the harness side connector.

OK:

Voltage: 10 to 14 V

NG

Go to step 4.

OK

Replace skid control ECU
(See page

BR–52

).

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

DI–897

).

4

Check for open and short circuit in harness and connector between master cyl-
inder pressure sensor No. 1, master cylinder pressure sensor No. 2, yaw rate
(deceleration) 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 zero point calibration (See page

DI–897

).

DI–990

–

DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

1184

DTC

C1362 / 36

Malfunction in Sensor Offset Value
(VSC Sensor System)

CIRCUIT DESCRIPTION

DTC is output when zero point calibration is not done for the VSC sensors (yaw rate and master cylinder
pressure sensors).
DTC is cleared when zero point calibration is done.

DTC No.

DTC Detecting Condition

Trouble Area

C1362 / 36

Zero point calibration of the VSC sensor system is not prop-

erly set.

Skid control ECU (Perform zero point calibration)

INSPECTION PROCEDURE

1

Perform zero point calibration of the yaw rate (deceleration) sensor and master
cylinder pressure sensor (See page

DI–897

).

NEXT

2

Check DTC

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 still remains in the memory.
RESULT:

DTC is output

A

DTC is not output

B

B

END

A

Replace skid control ECU
(See page

BR–52

).

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

DI–897

).

DI93X–03