Lexus RX300 (MCU15). Service manual — part 413
B05299
Battery
SST
(Wire)
B05331
–
ELECTRONIC FUEL INJECTION
INJECTOR
FI–23
LEXUS RX300 (RM785E)
(j)
If you have no hand–held tester, connect the positive (+)
and negative (–) leads from the battery to the fuel pump
connector (See page FI–5).
(k)
Connect SST (wire) to the injector and battery for 15 se-
conds, and measure the injection volume with a gra-
duated cylinder. Test each injector 2 or 3 times.
SST
09842–30070
Volume: 60 – 73 cm
3
(3.7 – 4.5 cu in.) per 15 sec.
Difference between each injector:
13 cm
3
(0.8 cu in.) or less
If the injection volume is not as specified, replace the injector.
2.
INSPECT LEAKAGE
(a)
In the condition above, disconnect the test probes of SST
(wire) from the battery and check the fuel leakage from
the injector.
SST
09842–30070
Fuel drop: 1 drop or less per 12 minutes
(b)
Turn the ignition switch to LOCK.
(c)
Disconnect the negative (–) terminal cable from the bat-
tery.
(d)
Remove the SST and fuel tube connector.
SST
09268–41047, 09842–30070
CAUTION:
S
Perform disconnecting operations of the fuel tube
connector (quick type) after observing the precau-
tions.
S
As there is retained pressure in the fuel pipe line, pre-
vent it from splashing inside the engine compart-
ment.
(e)
Disconnect the hand–held tester from the DLC3.
FI0V0–01
B12948
New Insulator
New O–Ring
New Grommet
New
O–Ring
S04511
Turn
Connector
Push
S04510
Spacer
Spacer
B12949
S04728
Rotate
Outward
FI–24
–
ELECTRONIC FUEL INJECTION
INJECTOR
LEXUS RX300 (RM785E)
INSTALLATION
1.
INSTALL INJECTORS AND DELIVERY PIPES
(a)
Install new insulator and grommet to each injector.
(b)
Apply a light coat of spindle oil or gasoline to 2 new O–
rings and install them to each injector.
(c)
Apply a light coat of spindle oil or gasoline on the place
where a delivery pipe touches an O–ring of the injector.
(d)
While turning the injector clockwise and counterclock-
wise, push it to the delivery pipes. Install the 6 injectors.
(e)
Position the injector connector outward.
(f)
Place the 4 spacers in position on the intake manifold.
(g)
Apply a light coat of spindle oil or gasoline on the place
where a intake manifold touches an O–ring of the injector.
(h)
Place the delivery pipes and fuel pipe together with the 6
injectors in position on the intake manifold.
(i)
Temporarily install the 4 bolts holding the delivery pipes
to the intake manifold.
(j)
Temporarily install the bolt holding the fuel pipe to the in-
take manifold.
(k)
Check that the injectors rotate smoothly.
HINT:
If injectors do not rotate smoothly, the probable cause is incor-
rect installation of O–rings. Replace the O–rings.
(l)
Position the injector connector outward.
B12949
B12950
Align
B12944
B12940
Fuel
Hose
Clamp
B12951
–
ELECTRONIC FUEL INJECTION
INJECTOR
FI–25
LEXUS RX300 (RM785E)
(m)
Tighten the 4 bolts holding the delivery pipes to the intake
manifold.
Torque: 10 N·m (100 kgf·cm, 7 ft·lbf)
(n)
Tighten the bolt holding the fuel pipe to the intake man-
ifold.
Torque: 19.5 N·m (200 kgf·cm, 14 ft·lbf)
2.
CONNECT FUEL INLET PIPE
(a)
Align the alignment marks (white paint) on the fuel inlet
pipe.
(b)
Connect the fuel inlet pipe (fuel tube connector) to the fuel
filter.
CAUTION:
Perform connecting operations of the fuel tube connector
(quick type) after observing the precautions.
(c)
Install the fuel hose clamp to the fuel filter.
3.
INSTALL AIR ASSIST HOSES AND PIPE
(a)
Connect the air assist hoses to the intake manifold.
(b)
Install the air assist pipe to the bracket on the No. 1 fuel
pipe.
4.
CONNECT INJECTOR CONNECTORS
5.
INSTALL AIR INTAKE CHAMBER ASSEMBLY
(See page EM–60)
6.
INSTALL AIR CLEANER HOSE
7.
CHECK FOR FUEL LEAKS
FI0V1–01
B12175
Location of Fuel Tank Cushion
Fuel Sender
Gauge
Fuel Inlet
Pipe
Fuel Tank Cap
Shield
Ring
Fuel Inlet Hose
3.5 (36, 31 in.·lbf)
z
Gasket
Fuel Sub–Suction Hose
Fuel Tank
Fuel Pump and
Sender Gauge
Assembly
Fuel Tank
Main Tube
RH Fuel
Tank Band
: Specified torque
39.2 (400, 29)
Fuel Tank
Vent Tube
Set Plate
Tube Joint Clip
LH Fuel Tank Band
z
Gasket
LH Fuel Tank Protector
RH Fuel Tank Protector
Lower Center
Fuel Tank Protector
z
Gasket
Fuel Tank
Breather Tube
Vapor Pressure Sensor
No.3 Fuel Tank protector
Vent Tube Set Plate
Fuel Cut
Off Valve
z
Gasket
EVAP Tube Support Plate
z
Gasket
39.2 (400, 29)
x 5
Vent Tube Set Plate
z
Gasket
Fuel Cut Off Valve
Clip
x 4
Ring
x 8
EVAP Hose
N·m (kgf·cm, ft·lbf)
z
Non–reusable part
FI–26
–
ELECTRONIC FUEL INJECTION
FUEL TANK AND LINE
LEXUS RX300 (RM785E)
FUEL TANK AND LINE
COMPONENTS
CAUTION:
S
Always use new gaskets when replacing the fuel tank or component parts.
S
Apply the proper torque to all parts tightened.
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