2005 LEXUS ES300 fuel pump

A71359
SSTSST
(T-joint)
SST
(Hose)
Fuel Tube
Connector
Fuel Inlet Tube
SST
(Hose)
A86347DLC3
Hand-held Tester
11-6
- FUELFUEL SYSTEM (3MZ-FE)
2034 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
(g) Install SST (a pressure gauge) and fuel tube connector
using SST as shown in the illustration.
SST 09268-41047 (95336-08070), 09268-45014
(09268-41250, 09268-41200, 09268-41220)
(h) Wipe up any gasoline.
(i) Reconnect the engine wire No. 3 (battery negative termi-
nal).
(j) Connect the hand-hand tester to the DLC3.
(k) Measure the fuel pressure.
Fuel pressure:
304 to 343 kPa (3.1 to 3.5 kgf/cm
2, 44 to 50 psi)
If the pressure is high, replace the fuel pressure regulator.
If the pressure is low, check the fuel hose connections, fuel
pump, fuel filter and fuel pressure regulator.
(l) Disconnect the hand-held tester from the DLC3.
(m) Start the engine.
(n) Measure the fuel pressure at idle.
Fuel pressure:
304 to 343 kPa (3.1 to 3.5 kgf/cm
2, 44 to 50 psi)
(o) Stop the engine.
(p) Check that the fuel pressure remains as specified for 5
minutes after the engine has stopped.
Fuel pressure: 147 kPa (1.5 kgf/cm
2, 21 psi) or more
If the pressure is not as specified, check the fuel pump, pres-
sure regulator and/or fuel injectors.
(q) After checking the fuel pressure, disconnect the battery
negative terminal and carefully remove SST and the fuel
tube connector to prevent gasoline splash.
(r) Reconnect the No. 1 fuel pipe (the fuel tube connector).
CAUTION:
After taking the precautions, connect the quick connector.

A86347DLC3
Hand-held Tester
A62390
FP
+B
- FUELFUEL SYSTEM (3MZ-FE)
11-7
2035 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
2. CHECK FUEL PUMP OPERATION AND FUEL LEAK
(a) When using the hand-held tester.
(1) Connect the hand-held tester to the DLC3.
(2) Turn the ignition switch ON and the hand-held tes-
ter ON.
NOTICE:
Do not start the engine.
(3) Select the ACTIVE TEST mode on the hand-held
tester.
(4) If you need help to select the ACTIVE TEST mode
on the hand-held tester, refer to the hand-held tes-
ter operator's manual.
(b) When not using the hand-held tester.
(1) Remove the circuit opening relay.
(2) Using a service wire, connect terminals FP and +B
of the engine room relay block.
NOTICE:
Pay due attention to the terminal connecting position to
avoid a malfunction.
(3) Turn the ignition switch ON, and check that the fuel
pump operates.
NOTICE:
Do not start the engine.
(c) Check that there are no fuel leaks after doing mainte-
nance anywhere on the fuel system.

A86390
SST
B05331
A84685
Ohmmeter
A84686Battery
- FUELFUEL SYSTEM (3MZ-FE)
11-9
2037 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
(6) Operate the fuel pump (see page 11-5).
(7) Connect SST (a wire) to the
fuel injector and battery
for 15 seconds, then measure the injection volume
with the graduated cylinder. Test each fuel injector
2 or 3 times.
SST 09842-30070
Standard:
Injection VolumeDifference between Cylenders
60 to 73 cm3
(3.7 to 4.5 cu in.)
per 15 seconds13 cm3 (0.8 cu in.) or less
NOTICE:
Always do the switching at the battery side.
If the injection volume is not as specified, replace the fuel injec-
tor.
(c) Inspect the leakage.
(1) In the condition of step (7), disconnect the test
probes of SST (a wire) from the battery, then check
the fuel leakage from the fuel injector.
Fuel drop: 1 drop or less per 12 minutes
If the fuel drop is not as specified, replace the fuel injector.
2. INSPECT FUEL PUMP
(a) Inspect the resistance.
(1) Using an ohmmeter, measure the resistance be-
tween the terminals.
Standard:
Tester ConnectionSpecified Condition
1 - 20.2 to 3.0 W at 20C (68F)
If the resistance is not as specified, replace the fuel pump.
(b) Check the operation.
(1) Apply battery positive voltage across the terminals.
(2) Check that the fuel pump operates.
NOTICE:

These tests must be performed quickly (within 10 se-
conds) to prevent burnout of the coil.

Keep the fuel pump as far away from the battery as
possible.

Always do the switching at the battery side.
If the operation is not as specified, replace the fuel pump.

A86296
Non-reusable part
: Specified torqueN´m (kgf´cm, ft´lbf)
Fuel Injector O-ring

Fuel Injector Grommet
Fuel Injector Assy
Fuel Delivery Pipe
Sub-assyFuel Injector
Connector

Injector Vibration Insulator
Fuel Pressure
Pulsation Damper Assy
Fuel Pump Hose Gasket

Fuel Pipe
No. 2 Gasket Delivery Pipe No. 1 Spacer
Delivery Pipe No. 1 Spacer Fuel Delivery Pipe No. 2
Fuel Injector
Connector
Injector
Vibration Insulator
Fuel Pipe Sub-assy No. 1
33 (331, 24)
20 (199, 14)
33 (331, 24)
10 (102, 7)
10 (102, 7)
Fuel Pipe No. 2 Union Bolt
11-12
- FUELFUEL INJECTOR ASSY (3MZ-FE)
2040 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)

110XW-02
A79485 A79485
Non-reusable part
N´m (kgf´cm, ft´lbf) : Specified torque
5.9 (60, 52 in.Vlbf)
x8Fuel Pump Tube Sub-assy
Tube Joint Clip Fuel Tank Bent Tube Set Plate
Fuel Suction
w/ Pump & Gauge Tube Assy

Fuel Suction Tube Set Gasket Vapor Pressure Sensor Connector Fuel Pump ConnectorRear Floor Service Hole Cover Rear Seat Cushion Assy
11-18- FUELFUEL SUCTION W/ PUMP & GAUGE TUBE
ASSY (3MZ-FE)
2046 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
FUEL SUCTION W/ PUMP & GAUGE TUBE ASSY (3MZ-FE)
COMPONENTS

A79486 A79486
Non-reusable part
Vapor Pressure Sensor Assy
Tube Joint Clip Fuel Suction Plate Sub-assy
Fuel Pump Harness
Fuel Tank Fuel Filter Fuel Sender Gauge Assy

Fuel Pressure Regulator
O-ring
Fuel Pressure Regulator AssyFuel Pump Assy
Fuel Pump Filter

Fuel Pump Filter Clip
Fuel Pump Cushion Rubber
Fuel Suction Support No. 2
- FUELFUEL SUCTION W/ PUMP & GAUGE TUBE
ASSY (3MZ-FE)11-19
2047 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)

110XX-02
A79487
(b)
(c)
A91017
Nylon Tube Fuel Tube Joint
O-ring
Tube Joint Clip Fuel Suction Plate
A79488
Tube Joint Clip
A79489
(b)
(b)
(b)(b)(b)
(b)
(b)
(b) 11-20
- FUELFUEL SUCTION W/ PUMP & GAUGE TUBE
ASSY (3MZ-FE)
2048 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
Removal & Installation and Disassembly & Reassembly
1. DISCHARGE FUEL SYSTEM PRESSURE (See page 11-1)
2. DISCONNECT ENGINE WIRE NO. 3 (BATTERY NEGATIVE TERMINAL)
3. REMOVE REAR SEAT CUSHION ASSY (See page 72-39)
4. REMOVE REAR FLOOR SERVICE HOLE COVER
(a) Remove the rear floor service hole cover.
(b) Disconnect the vapor pressure sensor connector.
(c) Disconnect the fuel pump connector.
5. REMOVE FUEL SUCTION W/ PUMP & GAUGE TUBE
ASSY
(a) Remove the tube joint clip, then pull out the fuel pump
tube.
NOTICE:

Check around the connector for dirt or mud before
this operation. Remove the dirt if necessary.

Be careful of mud because the fuel tube joint has an
O-ring which seals the pipe and connector that can
be contaminated.

Do not use any tools in this operation.

Do not bend or twist the nylon tube. Protect the con-
nector by covering it with a vinyl or plastic bag.

When the pipe and connector are stuck, push and pull
the connector to release. Pull the connector carefully.
(b) Remove the 8 bolts, then remove the fuel tank vent tube
set plate.

A79490
A79491
Cover
Tube Joint Clip
A77832Tape
A79492
A79494
Tape
(a)
Slide
- FUELFUEL SUCTION W/ PUMP & GAUGE TUBE
ASSY (3MZ-FE)11-21
2049 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
(c) Remove the fuel suction tube w/ pump & gauge from the
fuel tank.
NOTICE:

Do not damage the fuel pump filter.

Do not bend the arm of the fuel sender gauge.
(d) Remove the gasket from the fuel suction tube w/ pump &
gauge.
6. REMOVE VAPOR PRESSURE SENSOR ASSY
(a) Remove the cover.
(b) Remove the tube joint clip, then pull out the vapor pres-
sure sensor.
7. REMOVE FUEL SUCTION SUPPORT NO.2
(a) Using a screwdriver with the tip wrapped in tape, unfasten
the 5 claws. Then remove the fuel suction support No. 2.
NOTICE:
Do not damage the fuel suction support No. 2.
8. REMOVE FUEL PUMP CUSHION RUBBER
9. REMOVE FUEL SENDER GAUGE ASSY
(a) Disconnect the fuel sender gauge connector.
(b) Using a screwdriver with the tip wrapped in tape, unfasten
the clamp to release the fuel sender gauge. Then slide the
fuel sender gauge to remove it from the fuel pump.