Lexus GS300/400 (2000 year). Service manual — part 209

SF0NI–03

BO0919

Crack

Leakage

Deformation

Z10162

SST

Use SST

30 N·m

(310 kgf·cm, 22 ft·lbf)

Fulcrum

Length
30 cm
(11.81 in.)

SST: 09631–22020

FU0041

Pipe

Hose

Clip

2 – 7 mm (0.08 – 0.28 in.)

0 – 3 mm (0 – 0.12 in.)

–

SFI (2JZ–GE)

FUEL TANK AND LINE

SF–29

1495

INSPECTION

INSPECT FUEL TANK AND LINE
(a)

Check the fuel lines for cracks or leakage, and all connec-
tions for deformation.

(b)

Check the fuel tank vapor vent system hoses and connec-
tions for looseness, sharp bends or damage.

(c)

Check the fuel tank for deformation, cracks, fuel leakage
or tank band looseness.

(d)

Check the filler neck for damage or fuel leakage.

(e)

Hose and pipe connections are as shown in the illustra-
tion.

If a problem is found, repair or replace the parts as necessary.

SF0NJ–04

B08971

MAF Meter Connector

MAF Meter

Stay

Gasket

SF–30

–

SFI (2JZ–GE)

MASS AIR FLOW (MAF) METER

1496

MASS AIR FLOW (MAF) METER

COMPONENTS

SF0NK–03

B01956

B01856

Ohmmeter

THA

E2

E2

B01857

Voltmeter

E2G

VG

Air

–

SFI (2JZ–GE)

MASS AIR FLOW (MAF) METER

SF–31

1497

INSPECTION

1.

REMOVE MAF METER

(a)

Disconnect the MAF meter connector.

(b)

Remove the 2 bolts, MAF meter, gasket and stay.

2.

INSPECT MAF METER RESISTANCE

Using an ohmmeter, measure the resistance between terminals
THA and E2.

Terminals

Resistance

Temperature

THA–E2

13.6 – 18.4 k

Ω

–20

°

C (–4

°

F)

THA–E2

2.21 – 2.69 k

Ω

20

°

C (68

°

F)

THA–E2

0.493 – 0.667 k

Ω

60

°

C (140

°

F)

If the resistance is not as specified, replace the MAF meter.

3.

INSPECT MAF METER OPERATION

(a)

Connect the MAF meter connector.

(b)

Connect the negative (–) terminal cable to the battery.

(c)

Turn the ignition switch ON.

(d)

Using a voltmeter, connect the positive (+) tester probe to
terminal VG, and negative (–) tester probe to terminal
E2G.

(e)

Blow air into the MAF meter, and check that the voltage
fluctuates.

If operation is not as specified, replace the MAF meter.
(f)

Turn the ignition switch OFF.

(g)

Disconnect the negative (–) terminal cable from the bat-
tery.

(h)

Disconnect the MAF meter connector.

4.

REINSTALL MAF METER

(a)

Install the gasket to the MAF meter.

(b)

Install the MAF meter with the 2 bolts and stay.
Torque: 10.7 N·m (109 kgf·cm 8 ft·lbf)

(c)

Connect the MAF meter connector.

SF0NL–05

B09506

B01608

B01982

LEXUS
Hand–Held
Tester

SF–32

–

SFI (2JZ–GE)

THROTTLE BODY

1498

THROTTLE BODY

ON–VEHICLE INSPECTION

1.

REMOVE ENGINE COVER

Remove the 4 nuts and engine cover.

2.

INSPECT SYSTEM OPERATION

(a)

Check that the throttle linkage moves smoothly.

(b)

Inspect the throttle control motor for operating sound.
(1)

Turn the ignition switch ON.

(2)

When turning the accelerator pedal position sensor
lever, check the running sound of the motor. Also,
check that there is no friction sound.

If operation is not as specified, check the throttle control motor,
wiring and ECM.

(c)

Inspect the throttle position sensor and accelerator pedal
position sensor function.
(1)

Connect the LEXUS hand–held tester to the DLC3.

(2)

When turning the accelerator pedal position sensor
lever to the full–open position, check that the
throttle valve opening percentage (THROTTLE
POS) of the CURRENT DATA showns the standard
value.

Throttle valve opening percentage: 60 % or more

If operation is not as specified, check that the throttle position
sensor, accelerator pedal position sensor, wiring and ECM.
(d)

Start the engine, and check that the Malfunction Indicator
Lamp (MIL) does not light up.

(e)

Inspect the air assist system.
(1)

Allow the engine to warm up to normal operating
temperature.