Toyota Sequoia (2005). Manual - part 700

SF1XP–01

B17510

–

SFI

ACOUSTIC CONTROL INDUCTION SYSTEM (ACIS)

SF–55

2789

INSTALLATION

1.

INSTALL VSV FOR ACIS

(a)

Install the VSV to the intake manifold with the bolt.
Torque: 7.5 N·m (76 kgf·cm, 66 in.·lbf)

(b)

Connect the 2 vacuum hoses to the VSV.

2.

INSTALL INTAKE MANIFOLD ASSEMBLY
(See page 

EM–60

)

3.

INSTALL THROTTLE BODY COVER

SF1XQ–01

S04947

Continuity

Ohmmeter

Ohmmeter

No Continuity

1

2

3

5

S04946

Battery

Ohmmeter

Continuity

1

2

3

5

SF–56

–

SFI

EFI MAIN RELAY

2790

EFI MAIN RELAY

INSPECTION

1.

REMOVE RELAY BOX COVER

2.

REMOVE EFI MAIN RELAY (Marking: EFI)

3.

INSPECT EFI MAIN RELAY CONTINUITY

(a)

Using an ohmmeter, check that there is continuity be-
tween terminals 1 and 2.

If there is no continuity, replace the relay.
(b)

Check that there is no continuity between terminals 3 and
5.

If there is continuity, replace the relay.

4.

INSPECT EFI MAIN RELAY OPERATION

(a)

Apply battery voltage across terminals 1 and 2.

(b)

Using an ohmmeter, check that there is continuity be-
tween terminals 3 and 5.

If there is no continuity, replace the relay.
5.

REINSTALL EFI MAIN RELAY

6.

REINSTALL RELAY BOX COVER

SF1XR–01

S04947

Continuity

Ohmmeter

Ohmmeter

No Continuity

1

2

3

5

S04946

Battery

Ohmmeter

Continuity

1

2

3

5

–

SFI

A/F SENSOR HEATER RELAY

SF–57

2791

A/F SENSOR HEATER RELAY

INSPECTION

1.

REMOVE RELAY BOX COVER

2.

REMOVE A/F SENSOR HEATER RELAY (Marking: A/F
HTR)

3.

INSPECT A/F SENSOR HEATER RELAY CONTINUITY

(a)

Using an ohmmeter, check that there is continuity be-
tween terminals 1 and 2.

If there is no continuity, replace the relay.
(b)

Check that there is no continuity between terminals 3 and
5.

If there is continuity, replace the relay.

4.

INSPECT A/F SENSOR HEATER RELAY OPERATION

(a)

Apply battery voltage across terminals 1 and 2.

(b)

Using an ohmmeter, check that there is continuity be-
tween terminals 3 and 5.

If there is no continuity, replace the relay.
5.

REINSTALL A/F SENSOR HEATER RELAY

6.

REINSTALL RELAY BOX COVER

SF1XS–01

S04947

Continuity

2

1

No Continuity

Ohmmeter

Ohmmeter

3

5

S04946

Continuity

Ohmmeter

Battery

2

1

3

5

SF–58

–

SFI

CIRCUIT OPENING RELAY

2792

CIRCUIT OPENING RELAY

INSPECTION

1.

REMOVE RELAY BOX COVER

2.

REMOVE CIRCUIT OPENING RELAY 
(Marking: C/O)

3.

INSPECT CIRCUIT OPENING RELAY CONTINUITY

(a)

Using an ohmmeter, check that there is continuity be-
tween terminals 1 and 2.

If there is no continuity, replace the relay.
(b)

Check that there is no continuity between terminals 3 and
5.

If there is continuity, replace the relay.

4.

INSPECT CIRCUIT OPENING RELAY OPERATION

(a)

Apply battery positive voltage across terminals 1 and 2.

(b)

Using an ohmmeter, check that there is continuity be-
tween terminals 3 and 5.

If there is no continuity, replace the relay.
5.

REINSTALL CIRCUIT OPENING RELAY

6.

REINSTALL RELAY BOX COVER