Toyota Avalon Service & Repair Manual: Vacuum Switching Valve(for Acis)

Components

COMPONENTS

ILLUSTRATION

*1

NO. 1 VACUUM SWITCHING VALVE ASSEMBLY (for ACIS)

*2

VACUUM HOSE SUB-ASSEMBLY

*3

V-BANK COVER SUB-ASSEMBLY

-

-

N*m (kgf*cm, ft.*lbf): Specified torque

-

-

Inspection

INSPECTION

PROCEDURE

1. INSPECT NO. 1 VACUUM SWITCHING VALVE ASSEMBLY (for ACIS)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

1 - 2

20°C (68°F)

33 to 39 Ω

1 - No. 1 vacuum switching valve assembly (for ACIS) body ground

Always

10 kΩ or higher

2 - No. 1 vacuum switching valve assembly (for ACIS) body ground

If the result is not as specified, replace the No. 1 vacuum switching valve assembly (for ACIS).

*a

Valve Body

*b

Component without harness connected

(No. 1 Vacuum Switching Valve Assembly (for ACIS))

(b) Check the No. 1 vacuum switching valve assembly (for ACIS) operation.

(1) When vacuum is applied to the port (E), check that air is sucked into the filter.

If the result is not as specified, replace the No. 1 vacuum switching valve assembly (for ACIS).

*a

Filter

*b

Port (E)

*c

Air

(2) Apply battery voltage across the terminals. When vacuum is applied to the port (F), check that air is sucked into the port (E).

If the result is not as specified, replace the No. 1 vacuum switching valve assembly (for ACIS).

*a

Port (E)

*b

Port (F)

*c

Air

Installation

INSTALLATION

PROCEDURE

1. INSTALL NO. 1 VACUUM SWITCHING VALVE ASSEMBLY (for ACIS)

(a) Install the No. 1 vacuum switching valve assembly (for ACIS) to the intake air surge tank assembly with the bolt.

Torque:

9.0 N·m {92 kgf·cm, 80 in·lbf}

(b) Connect the 2 vacuum hose sub-assemblies to the No. 1 vacuum switching valve assembly (for ACIS).

(c) Connect the No. 1 vacuum switching valve assembly (for ACIS) connector.

2. INSTALL V-BANK COVER SUB-ASSEMBLY

Click here

Removal

REMOVAL

PROCEDURE

1. REMOVE V-BANK COVER SUB-ASSEMBLY

Click here

2. REMOVE NO. 1 VACUUM SWITCHING VALVE ASSEMBLY (for ACIS)

(a) Disconnect the No. 1 vacuum switching valve assembly (for ACIS) connector.

(b) Disconnect the 2 vacuum hose assemblies from the No. 1 vacuum switching valve assembly (for ACIS).

(c) Remove the bolt and No. 1 vacuum switching valve assembly (for ACIS) from the intake air surge tank assembly.

    System Diagram

    2gr-fks Lubrication

    See More:

    Toyota Avalon Service & Repair Manual > Sfi System: ACIS Control Circuit
    DESCRIPTION ACIS (Acoustic Control Induction System) controls the opening and closing the intake air control valve sub-assembly built into the intake air surge tank assembly to increase the intake efficiency according to the engine load. When the engine speed is between 0 and 4300 rpm and the thrott ...

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