Lexus ES300 (1997 year). Service manual - part 526

SF067–06

S05660

 Gasket

Throttle Body

Throttle Position
Sensor Connector

IAC Valve Connector

Water Bypass Hose

Air Assist Hose

Water Bypass Hose

Air Cleaner Hose

Throttle Cable

Accelerator Cable

Throttle Body

EGR Gas Temperature
Sensor Bracket

IAC Valve

 Gasket

N·m (kgf·cm, ft·lbf)

: Specified torque

 Non–reusable part

19.5 (200, 14)

SF–38

–

SFI

IDLE AIR CONTROL (IAC) VALVE

889

1997 LEXUS ES300   (RM511U)

COMPONENTS

SF068–05

P14340

–

SFI

IDLE AIR CONTROL (IAC) VALVE

SF–39

890

1997 LEXUS ES300   (RM511U)

REMOVAL

1.

REMOVE THROTTLE BODY
(See page 

SF–33

)

2.

REMOVE IAC VALVE

Remove the 4 screws, IAC valve and gasket.
HINT:
At the time of installation, please refer to the following item.
Place a new gasket on the throttle body.

SF069–01

P14290

RSC

+B

Closed

Battery

P14289

+B

RSO

Open

Battery

SF–40

–

SFI

IDLE AIR CONTROL (IAC) VALVE

891

1997 LEXUS ES300   (RM511U)

INSPECTION

INSPECT IAC VALVE OPERATION
(a)

Connect the positive (+) lead from the battery to terminal
+B and negative (–) lead to terminal RSC, and check that
the valve is closed.

(b)

Connect the positive (+) lead from the battery to terminal
+B and negative (–) lead to terminal RSO, and check that
the valve is open.

If operation is not as specified, replace the IAC valve.

SF06A–01

–

SFI

IDLE AIR CONTROL (IAC) VALVE

SF–41

892

1997 LEXUS ES300   (RM511U)

INSTALLATION

Installation is in the reverse order of removal (See page 

SF–39

).