Lexus RX300 (MCU15). Service manual - part 415

FI0V6–01

–

ELECTRONIC FUEL INJECTION

AIR FLOW METER

FI–31

LEXUS RX300   (RM785E)

INSTALLATION

Installation is in the reverse order of removal (See page FI–29).

B05129

Must Have 
No Clearance

Must Have 
Clearance

FI0V7–01

A06100

VTA

E2

VC

FI–32

–

ELECTRONIC FUEL INJECTION

THROTTLE BODY

LEXUS RX300   (RM785E)

THROTTLE BODY

ON–VEHICLE INSPECTION

1.

INSPECT THROTTLE BODY

Check that the throttle linkage moves smoothly.

2.

INSPECT THROTTLE POSITION SENSOR

(a)

Check that there is no clearance between each throttle
stop screw and the throttle lever when applying the nega-
tive pressure (53.3 kPa (400 mmHg)) to the throttle open-
er using the mighty pack.

(b)

Apply vacuum to the throttle opener.

(c)

Disconnect the sensor connector.

(d)

Using an ohmmeter, measure the resistance between
each terminal.

Throttle valve 

condition

Between 

terminals

Resistance

Fully closed

VTA – E2

0.2 – 6.3 kΩ

Fully open

VTA – E2

2.0 – 10.2 kΩ

–

VC – E2

2.5 – 5.9 kΩ

(e)

Reconnect the sensor connector.

FI0V8–01

B12952

z

 Gasket

Throttle Body

Water Bypass Hose

Air Hose

N·m (kgf·cm, ft·lbf)

z

 Non–reusable part

19.5 (199, 14.4)

: Specified torque

Air Cleaner Case

Air Cleaner Cap

Air Cleaner Hose

Vacuum Hose

Accelerater Cable

Connector

Surge Tank Stay

19.5 (199, 14.4)

–

ELECTRONIC FUEL INJECTION

THROTTLE BODY

FI–33

LEXUS RX300   (RM785E)

COMPONENTS

B05284

Protector

z

 O–Ring

Throttle Postion Senser

6.9 (70, 61 in.·lbf)

z

 Gasket

z

 O–Ring

Throttle Body No.2

Throttle Body No.1

z

 Gasket

ISC Valve

N·m (kgf·cm, ft·lbf)

z

 Non–reusable part

: Specified torque

Throttle Body No.3

6.9 (70, 61 in.·lbf)

6.9 (70, 61 in.·lbf)

FI–34

–

ELECTRONIC FUEL INJECTION

THROTTLE BODY

LEXUS RX300   (RM785E)