Lexus RX300 (MCU15). Service manual — part 412
FI0UX–01
B12945
PS Pressure Tube
19.5 (200, 14)
39 (400, 19)
Throttle Position
Sensor Connector
Accelerator Cable
ISC Valve
Connector
Water Bypass Hose
Vacuum
Hose
z
Gasket
PCV Hose
Air Intake Chamber
Assembly
43 (440, 32)
Air Intake Chamber Stay
No.1 Engine
Hanger
Ground Cable
Ground Cable
Ground Strap
No.1 VSV Connector for ASIC
Purge Hose
Air Assist Hose and Pipe
19.5 (200, 14)
Injector Connector
Delivery Pipe
10 (100, 7)
Spacer
z
O–Ring
z
Grommet
z
Grommet
z
O–Ring
N·m (kgf·cm, ft·lbf)
: Specified
z
Non–reusable part
V–Bank Cover
Brake Booster
Vacuum Hose
Injector
Fuel Hose Clamp
–
ELECTRONIC FUEL INJECTION
INJECTOR
FI–19
LEXUS RX300 (RM785E)
COMPONENTS
FI0UY–01
S04505
B12951
B08887
B12941
FI–20
–
ELECTRONIC FUEL INJECTION
INJECTOR
LEXUS RX300 (RM785E)
REMOVAL
1.
REMOVE AIR CLEANER HOSE
2.
REMOVE AIR INTAKE CHAMBER ASSEMBLY
(See page EM–33)
3.
DISCONNECT INJECTOR CONNECTORS
4.
REMOVE AIR ASSIST HOSES AND PIPE
(a)
Disconnect the air assist pipe from the bracket on the
No.1 fuel pipe.
(b)
Remove the air assist hoses from the intake manifold.
5.
DISCONNECT FUEL INLET PIPE
(a)
Remove the fuel hose clamp.
(b)
Disconnect the fuel inlet pipe (fuel tube connector) from
the fuel filter.
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.
B12949
–
ELECTRONIC FUEL INJECTION
INJECTOR
FI–21
LEXUS RX300 (RM785E)
6.
REMOVE DELIVERY PIPES AND INJECTORS
NOTICE:
S
Be careful not to drop the injectors when removing
the delivery pipes.
S
Pay attention to put any hung load on the injector to
and from the side direction.
(a)
Remove the 5 bolts and delivery pipes together with the
6 injectors and fuel pipe.
(b)
Remove the 4 spacers from the intake manifold.
(c)
Pull out the 6 injectors from the delivery pipes.
(d)
Remove the 2 O–rings and 2 grommets from each injec-
tor.
FI0UZ–01
B12946
Fuel Tube
Connector
SST(Hose)
SST(Union)
SST(Clamp)
Injector
B09225
Fuel Tube Connector
B12947
Fuel Tube Connector
SST
(Hose)
B05298
SST (Union)
SST (Hose)
O–Ring
SST
(Clamp)
Vinyl Tube
D09456
Hand–Held Tester
DLC3
FI–22
–
ELECTRONIC FUEL INJECTION
INJECTOR
LEXUS RX300 (RM785E)
INSPECTION
1.
INSPECT INJECTOR INJECTION
CAUTION:
Keep injector clear of sparks during the test.
(a)
Purchase the new No. 1 fuel pipe and take out the fuel
tube connector from its pipe.
Part No. 23801–20040
(b)
Connect SST (hose) and fuel tube connector to the fuel
filter outlet.
SST
09268–41047
CAUTION:
Perform connecting operations of the fuel tube connector
(quick type) after observing the precautions.
HINT:
Use the vehicle’s fuel filter.
(c)
Install the grommet and O–ring to the injector.
(d)
Connect SST (union and hose) to the injector, and hold
the injector and union with SST (clamp).
SST
09268–41047 (09268–41100, 09268–41300)
(e)
Put the injector into a graduated cylinder.
HINT:
Install a suitable vinyl hose onto the injector to prevent gasoline
from splashing out.
(f)
Connect the hand–held tester to the DLC3.
(g)
Turn the ignition switch ON and hand–held tester main
switch ON.
NOTICE:
Do not start the engine.
(h)
Select the active test mode on the hand–held tester.
(i)
Please refer to the hand–held tester operator’s manual
for further details.
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