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.