TOYOTA SEQUOIA 2001 Service Repair Manual

SF0PD±04
B17508
B17509
Disconnect
± SFIACOUSTIC CONTROL INDUCTION SYSTEM (ACIS)
SF±49
2783 Author: Date:
2005 SEQUOIA (RM1146U)
ACOUSTIC CONTROL INDUCTION
SYSTEM (ACIS)
ON±VEHICLE INSPECTION
INSPECT INTAKE AIR CONTROL VALVE OPERATION
(a) Start the engine.
(b) While the engine idling, check that the actuator rod
moves.
(c) Disconnect the VSV connector, and check that the actua-
tor rod is returned.
If the operation is not as specified, inspect the intake air control
valve, VSV and ECM.

SF1XM±01
B17459
Throttle Body Cover
PS Air Hose
Intake Air Connector
Suction Hose
MAF Meter Wire
PCV Hose
Vacuum Hose
SF±50
± SFIACOUSTIC CONTROL INDUCTION SYSTEM (ACIS)
2784 Author: Date:
2005 SEQUOIA (RM1146U)
COMPONENTS

B17490
N´m (kgf´cm, ft´lbf) : Specified torque

Gasket
Non±reusable part

18 (185, 13)
VSV Connector for
EVAP Injector Connector
Fuel Return Hose VSV ConnectorEngine Wire
Engine Wire
Throttle Body
Connector
18 (185, 13)
Injector Connector VSV Connector
18 (185, 13)
Engine Wire
± SFIACOUSTIC CONTROL INDUCTION SYSTEM (ACIS)
SF±51
2785 Author: Date:
2005 SEQUOIA (RM1146U)

B17491
VSV for ACIS VSV Wire Connector
Vacuum Hose
Vacuum Hose
7.5 (80, 66 in.´lbf)
N´m (kgf´cm, ft´lbf) : Specified torque
7.5 (80, 66 in.´lbf)
Intake Manifold Assembly
SF±52
± SFIACOUSTIC CONTROL INDUCTION SYSTEM (ACIS)
2786 Author: Date:
2005 SEQUOIA (RM1146U)

SF1XN±01
B17510
± SFIACOUSTIC CONTROL INDUCTION SYSTEM (ACIS)
SF±53
2787 Author: Date:
2005 SEQUOIA (RM1146U)
REMOVAL
1. REMOVE THROTTLE BODY COVER
2. REMOVE INTAKE MANIFOLD ASSEMBLY
(See page EM±36)
3. REMOVE VSV FOR ACIS
(a) Remove the 2 vacuum hoses from the VSV.
(b) Remove the bolt and VSV from the intake manifold.

SF1XO±01
B17511
S04525
Continuity Ohmmeter
S04524
No continuity Ohmmeter
FI6393
Air
E
Filter
S04523
Air
E
F
Battery SF±54
± SFIACOUSTIC CONTROL INDUCTION SYSTEM (ACIS)
2788 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
1. INSPECT INTAKE AIR CONTROL VALVE
(a) With 39.9 kPa (300 mmHg, 11.8 in.Hg) of vacuum applied
to the actuator, check that the actuator rod moves.
(b) One minute after applying the vacuum in step (a), check
that the actuator rod does not return.
If the operation is not as specified, replace the intake manifold.
2. INSPECT VSV
(a) Using an ohmmeter, check that there is continuity be-
tween each terminal.
Resistance: 33 to 39 W at 20°C (68°F)
If there is no continuity, replace the VSV.
(b) Using an ohmmeter, check that there is no continuity be-
tween each terminal and the body.
If there is continuity, replace the VSV.
(c) Check that air flows from port E to the filter.
(d) Apply battery voltage across the terminals.
(e) Check that air flows from port E to port F.
If operation is not as specified, replace the VSV.

SF1XP±01
B17510
± SFIACOUSTIC CONTROL INDUCTION SYSTEM (ACIS)
SF±55
2789 Author: Date:
2005 SEQUOIA (RM1146U)
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 12
35
S04946
BatteryOhmmeter
Continuity 12
35
SF±56
± SFIEFI MAIN RELAY
2790 Author: Date:
2005 SEQUOIA (RM1146U)
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 12
35
S04946
BatteryOhmmeter
Continuity 12
35
± SFIA/F SENSOR HEATER RELAY
SF±57
2791 Author: Date:
2005 SEQUOIA (RM1146U)
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 OhmmeterOhmmeter
35
S04946ContinuityOhmmeter
Battery2
1
35
SF±58
± SFICIRCUIT OPENING RELAY
2792 Author: Date:
2005 SEQUOIA (RM1146U)
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