Lexus ES300 (1997 year). Manual — part 523

SF05W–01

BO0919

Crack

Leakage

Deformation

Z10162

SST

Use SST
28 N·m

(285 kgf·cm, 21 ft·lbf)

Fulcrum
Length
30 cm
(11.81 in)

SST: 09631–22020

FU0041

Pipe

2 – 7 mm (0.08 – 0.28 in.)

Hose

Clip

0 – 3 mm (0 – 0.12 in.)

SF–26

–

SFI

FUEL TANK AND LINE

877

1997 LEXUS ES300 (RM511U)

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.

S04539

MAF Meter

MAF Meter Connector

Gasket

Non–reusable part

SF05X–01

–

SFI

MASS AIR FLOW (MAF) METER

SF–27

878

1997 LEXUS ES300 (RM511U)

MASS AIR FLOW (MAF) METER

COMPONENTS

SF05Y–06

S04755

SF–28

–

SFI

MASS AIR FLOW (MAF) METER

879

1997 LEXUS ES300 (RM511U)

REMOVAL

REMOVE MAF METER
(a)

Disconnect the MAF meter connector.

(b)

Remove the 2 bolts, MAF meter and gasket.

HINT:
At the time of installation, please refer to the following item.
Use a new gasket.

SF05Z–04

S04526

E2

THA

Ohmmeter

S04756

Air

VG

E2G

Voltmeter

–

SFI

MASS AIR FLOW (MAF) METER

SF–29

880

1997 LEXUS ES300 (RM511U)

INSPECTION

1.

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

0.49 – 0.67 k

Ω

60

°

C (140

°

F)

If the resistance is not as specified, replace the MAF meter.
2.

INSPECT MAF METER OPERATION

(a)

Connect the MAF meter connector.

(b)

Turn the ignition switch ON.

(c)

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

(d)

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

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

Turn the ignition switch LOCK.

(f)

Disconnect the MAF meter connector.