Lexus RX300 (MCU15). Service manual — part 409

B12944

B12940

Fuel
Hose

Clamp

B08888

Ohmmeter

4

5

B08887

Battery

4

5

–

ELECTRONIC FUEL INJECTION

FUEL PUMP

FI–7

LEXUS RX300 (RM785E)

(q)

Reconnect the No.1 fuel pipe (fuel tube connector).

CAUTION:
Perform connecting operations of the fuel tube connector
(quick type) after observing the precautions.

(r)

Install the fuel hose clamp to the fuel filter.

(s)

Reconnect the negative (–) terminal cable to the battery.

(t)

Check for fuel leakage.

3.

INSPECT FUEL PUMP

(a)

Remove the LH rear seat.

(b)

Remove the rear seat side garnish.

(c)

Tarn over the floor carpet.

(d)

Remove the floor service hole cover.

(e)

Disconnect the fuel pump & sender gauge connector.

(f)

Using an ohmmeter, measure the resistance between ter-
minals 4 and 5.
Resistance: 0.2 – 3.0 Ω at 20°C (68°F)

If the resistance is not as specified, replace the fuel pump.
(g)

Inspect the fuel pump operation.
Connect the positive (+) lead from the battery to terminal
4 of the connector, and the negative (–) lead to terminal
5. Check that the fuel pump operates.

NOTICE:

S

These tests must be done quickly (within 10 seconds)
to prevent the coil burning out.

S

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

S

Always do the switching at the battery side.

If operation is not as specified, replace the fuel pump or lead
wire.
(h)

Reconnect the fuel pump & sender gauge connector.

(i)

Reinstall the floor service hole cover.

(j)

Install the floor carpet.

(k)

Reinstall the rear seat side garnish.

(l)

Reinstall the LH rear seat.

FI0UQ–01

B08884

Tonneau Cover

Rear Seat Side Garnish

Floor Carpet

Front Part of Deck
Board Assembly

Turn Over

LH Rear Seat

Floor Service
Hole Cover

37 (375, 27)

N·m (kgf·cm, ft·lbf) : Specified torque

37 (375, 27)

37 (375, 27)

37 (375, 27)

FI–8

–

ELECTRONIC FUEL INJECTION

FUEL PUMP

LEXUS RX300 (RM785E)

COMPONENTS

B12937

Floor Service Hole Cover

Fuel Pump & Sender
Gauge Coonector

Fuel Tank Vent Tube Set Plate

Fuel Tank Main Tube

Tube Joint Clip

Fuel Pump and Sendor
Gauge Assembly

z

Gasket

Fuel Sub Suction Hose

3.5 (36, 31 in.·lbf)

x 8

z

Non–reusable part

N·m (kgf·cm, ft·lbf) : Specified torque

–

ELECTRONIC FUEL INJECTION

FUEL PUMP

FI–9

LEXUS RX300 (RM785E)

B12938

Fuel Suction Plate
with Sender Gauge

z

O–Ring

Fuel Filter

Fuel Pump

No.2 Fuel Suction Support

Fuel Pressure
Regulator and Fuel
Return Jet Tube
Assembly

z

Non–reusable part

FI–10

–

ELECTRONIC FUEL INJECTION

FUEL PUMP

LEXUS RX300 (RM785E)