2003 LEXUS LS430 engine

Fig. 11: Covering Disconnected Pipe And Connector With Plastic Bag
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
f. Observe these precautions when connecting the fuel tube connector (quick type).
1. Check that there is no damage or foreign matter on the part of the pipe that contacts the
connector.
2. Align the axis of the connector with the axis of the pipe. Push the pipe into the connector
until the connector makes a `click' sound. If the connection is too tight, apply a small amount
of fresh engine oil on the tip of the pipe.
Fig. 12: Aligning Axis Of Connector With Axis Of Pipe

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
3. After connecting the pipe and connector, try to pull them apart to confirm that they are
securely connected.
4. Install the No. 1 fuel pipe clamp to the connector.

Fig. 14: Connecting Hand-Held Tester (With CAN VIM) To DLC3 Connector Terminal
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
3. Select the ACTIVE TEST mode on the hand-held tester.
HINT:
Please refer to the hand-held tester operator's manual for further details.
4. Check that there are no leaks from any part of the fuel system.
5. Turn the ignition switch LOCK.
6. Disconnect the hand-held tester from the DLC3.
ON-VEHICLE INSPECTION
1.CHECK FUEL PUMP OPERATION
a. Connect the hand-held tester (with CAN VIM) to the DLC3.
b. Turn the ignition switch ON and push the hand-held tester main switch ON.
Do not start the engine.

pressure regulator.
i. Disconnect the hand-held tester from the DLC3.
j. Start the engine.
k. Measure the fuel pressure at idle.
Fuel pressure: 304 to 343 kPa (3.1 to 3.5 kgf/cm2, 44 to 50 psi)
l. Stop the engine.
m. Check that the fuel pressure remains as specified for 5 minutes after the engine has stopped.
Fuel pressure: 147 kPa (1.5 kgf/cm2, 21 psi) or more
If pressure is not as specified, check the fuel pump, pressure regulator and/or injectors.
n. After checking fuel pressure, disconnect the negative (-) terminal cable from the battery and
carefully remove the SST to prevent gasoline from spilling.
SST 09268-45014
o. Reinstall the fuel pressure pulsation damper to the RH delivery pipe (see REPLACEMENT
).
p. Reconnect the negative (-) terminal cable to the battery.
q. Check for fuel leaks.
3.INSPECT FUEL PUMP

REPLACEMENT
1.WORK FOR PREVENTING GASOLINE FROM SPILLING OUT (See PRECAUTION
)
2.DISCONNECT BATTERY NEGATIVE TERMINAL
3.REMOVE V-BANK COVER
a. Remove the 2 nuts and V-bank cover.
4.REMOVE AIR CLEANER INLET NO.1
5.REMOVE INTAKE AIR CONNECTOR PIPE
a. Disconnect the air hose and ventilation hose No. 1.
b. Loosen the hose clamp.
c. Remove the bolt and intake air connector pipe.
6.REMOVE V-BANK COVER BRACKET NO.1
7.REMOVE V-BANK COVER BRACKET NO.2
8.REMOVE V-BANK COVER BRACKET NO.3
9.REMOVE V-VANK COVER BRACKET NO.4
10.REMOVE VACUUM SWITCHING VALVE ASSY
11.DISCONNECT ENGINE WIRE

Fig. 33: Installing Gaskets
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
20.INSTALL ENGINE WIRE
a. Install the 2 wire clamps to the wire clamp bracket on the RH delivery pipe.
21.INSTALL VACUUM SWITCHING VALVE ASSY
Torque: 18 N.m (184 kgf.cm, 13 ft.lbf)
22.INSTALL V-VANK COVER BRACKET NO.4
Torque: 7.5 N.m (76 kgf.cm, 66 in..lbf)
23.INSTALL V-BANK COVER BRACKET NO.3
Torque: 7.5 N.m (76 kgf.cm, 66 in..lbf)
24.INSTALL V-BANK COVER BRACKET NO.2
Torque: 7.5 N.m (76 kgf.cm, 66 in..lbf)
25.INSTALL V-BANK COVER BRACKET NO.1
Torque: 7.5 N.m (76 kgf.cm, 66 in..lbf)
26.INSTALL INTAKE AIR CONNECTOR PIPE

Fig. 51: Pulling Out Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
c. Protect each connecting part from damage and contamination by covering it with a vinyl bag.
8.REMOVE REAR FLOOR SERVICE HOLE COVER
a. Remove the service hole cover and disconnect the fuel sender gauge connector.
9.REMOVE FRONT FLOOR BRACE CENTER (See OVERHAUL
)
10.REMOVE ENGINE UNDER COVER NO.2
11.REMOVE EXHAUST PIPE ASSY (See REPLACEMENT
)
12.REMOVE PROPELLER SHAFT HEAT INSULATOR
13.REMOVE FRONT FLOOR HEAT INSULATOR NO.1
a. Remove the 2 bolts and propeller shaft heat insulator.
14.REMOVE DIFFERENTIAL SUPPORT PROTECTOR NO.1
15.REMOVE DIFFERENTIAL SUPPORT PROTECTOR NO.2
16.REMOVE PROPELLER SHAFT ASSY (See OVERHAUL
)
17.REMOVE PARKING BRAKE CABLE ASSY NO.2 (See REPLACEMENT
)
18.REMOVE PARKING BRAKE CABLE ASSY NO.3 (See REPLACEMENT
)
19.REMOVE FUEL TANK TO FILLER PIPE HOSE
20.REMOVE FUEL TANK EVAPORATION VENT TUBE
21.REMOVE FUEL TANK BREATHER HOSE

45.INSTALL DIFFERENTIAL SUPPORT PROTECTOR NO.2
46.INSTALL DIFFERENTIAL SUPPORT PROTECTOR NO.1
47.INSTALL FRONT FLOOR HEAT INSULATOR NO.1
a. Install the front floor heat insulator with the 4 bolts.
Torque: 5.4 N.m (55 kgf.cm, 47 in..lbf)
48.INSTALL PROPELLER SHAFT HEAT INSULATOR
49.INSTALL EXHAUST PIPE ASSY (See REPLACEMENT
)
50.INSTALL ENGINE UNDER COVER NO.2
51.INSTALL FRONT FLOOR BRACE CENTER (See OVERHAUL
)
52.INSTALL REAR FLOOR SERVICE HOLE COVER
53.INSTALL FUEL TANK MAIN TUBE SUB-ASSY
a. Connect the connector on the fuel tank side.
1. Attach the fuel tube connector to the port of the fuel suction plate.
2. Install the tube joint clip.
b. Connect the connector on the fuel pipe side.
1. Insert the connector by aligning the axes of the pipe and the connector until the retainer makes a
click sound.

ENGINE ROOM JUNCTION & RELAY BLOCK
Fig. 1: Locating Engine Room Fusible Link, Junction & Relay Blocks

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