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SF-6
SFI - FUEL PUMP
TOYOTA Hand-Held Tester FUEL PUMP SF1M6-01
ON-VEHICLE INSPECTION
1. CHECK FUEL PUMP OPERATION
(a) Connect a TOYOTA hand-held tester to the DLC3.
(b) Turn the ignition switch ON and TOYOTA hand-held tes-
ter main switch ON.
NOTICE:
DLC3 A01670
Do not start the engine.
(c) Select the active test mode on the TOYOTA hand-held
tester.
(d) Please refer to the TOYOTA hand-held tester operator's
manual for further details.
(e) If you have no TOYOTA hand-held tester, connect the
positive (+) and negative (-) leads from the battery to the
fuel pump connector (See step 7).
(f) Check that there is pressure in the fuel inlet hose from the
fuel pipe.
HINT:
If there is fuel pressure, you will hear the sound of fuel flowing.
If there is no pressure, check these parts:
S Fusible link
S Fuses
S EFI main relay
B12836 S Fuel pump
S ECM
S Wiring connections
(g) Turn the ignition switch to LOCK.
(h) Disconnect the TOYOTA hand- held tester from the
DLC3.
2. CHECK FUEL PRESSURE
Fuel Tube Connector (a) Check the battery positive voltage is above 12 V.
(b) Disconnect the negative (-) terminal cable from the bat-
tery.
(c) Purchase the new No.1 fuel pipe and take out the fuel
tube connector from its pipe.
Part No. 23801-20070
S05359
2001 SIENNA (RM787U)
Author : Date : 1081
SF-7
SFI - FUEL PUMP
(d) Remove the fuel hose clamp.
B12837
(e) Disconnect the No.1 fuel pipe (fuel tube connector) from
the fuel pipe.
CAUTION:
S Perform disconnecting operations of the fuel tube
connector (quick type) after observing the precau-
tions (See page SF-1 ).
S As there is retained pressure in the fuel pipe line, pre-
vent it from splashing inside the engine compart-
B12838 ment.
(f) Install SST (pressure gauge) as shown in the illustration
SST
SST by using SST and fuel tube connector.
(Hose) SST 09268-41047, 09268-45014
SST
(g) Wipe off any splattered gasoline.
(h) Reconnect the TOYOTA hand-held tester to the DLC3
(See step 1).
(i) Reconnect the negative (-) terminal cable to the battery.
(j) Measure the fuel pressure.
Fuel pressure:
301 - 347 kPa (3.1 - 3.5 kgf/cm2, 44 - 50 psi)
If pressure is high, replace the fuel pressure regulator.
If pressure is low, check these parts:
S Fuel hoses and connections
S Fuel pump
S Fuel filter
S Fuel pressure regulator
SST
(k) Disconnect the TOYOTA hand- held tester from the
(Hose) DLC3.
B12839 (l) Start the engine.
(m) Measure the fuel pressure at idle.
Fuel pressure:
301 - 347 kPa (3.1 - 3.5 kgf/cm2, 44 - 50 psi)
(n) Stop the engine.
(o) 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.
2001 SIENNA (RM787U)
Author : Date : 1082
SF-8
SFI - FUEL PUMP
(p) After checking fuel pressure, disconnect the negative (-)
terminal cable from the battery and carefully remove the
SST and fuel tube connector to prevent gasoline from
splashing.
SST 09268-41047, 09268-45014
(q) Reconnect the No.1 fuel pipe (fuel tube connector).
CAUTION:
Perform connecting operations of the tube connector
(quick type) after observing the precautions (See page
SF-1 ).
B12838
(r) Surely install the hose clamp to the fuel filter with "click"
sound.
(s) After installing the clamp, check that the clamp is fixed by
pulling up to the clamp.
(t) Reconnect the negative (-) terminal cable to the battery.
(u) Check for fuel leaks.
3. DISCONNECT FUEL PUMP & SENDER GAUGE CON-
NECTOR
B12837
Ohmmeter 4 5 4. INSPECT FUEL PUMP RESISTANCE
Using an ohmmeter, measure the resistance between terminals
4 and 5.
Resistance: 0.2 - 3.0 at 20◦ Jabse Service Manual Search 2026 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo