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SF-6
SFI - FUEL PUMP
TOYOTA Hand-Held Tester FUEL PUMP SF098-07
ON-VEHICLE INSPECTION
1. CHECK FUEL PUMP OPERATION
(a) Connect the TOYOTA hand-held tester to the DLC3.
(b) Turn the ignition switch ON and TOYOTA hand-held tes-
ter main switch ON.
NOTICE:
DLC3 D08002
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 (+) lead from the battery to terminal 4 of the con-
necter, and the negative (-) lead to terminal 5.
4 5
Battery
B09206
(f) Check that there is pressure in the fuel inlet pipe from the
fuel line.
HINT:
If there is fuel pressure, you will hear the sound if fuel following.
If there is no pressure, check these parts, Fusible link, Fuses,
EFI Main relay, Fuel pump, ECM, and Witting connector.
(g) Turn the ignition switch to LOCK.
(h) Disconnect the TOYOTA hand- held tester from the
B09224 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 fuel tube and take out the fuel tube
connector from its pipe.
Part No. 23901-21020
B09225
2002 ECHO (RM884U)
Author : Date : 716
SF-7
SFI - FUEL PUMP
(d) Remove the fuel pipe clamp.
B09220
(e) Disconnect the fuel tube (fuel tube connector) from the
fuel pipe.
CAUTION:
S Perform disconnecting operations of the fuel tube
connector (quick type) after observing the precau-
tions.
S As there is retained pressure in the fuel pipe line, pre-
vent if from splashing inside the engine comport-
B09221 ment.
(f) Install SST (pressure gauge) as shown in the illustration
by using SST and fuel tube connector.
SST
(Hose) SST SST 09268-41047 (95336-08070), 09268-45014
(Hose)
(09268-41200, 09268-41220, 09268-41250)
SST SST
(g) Wipe off any splattered gasoline.
Retainer
(h) Reconnect the negative (-) terminal cable to the battery.
Fuel pipe
SST
(Hose)
Fuel Tube
Connection
B00194
2002 ECHO (RM884U)
Author : Date : 717
SF-8
SFI - FUEL PUMP
(i) Connect the TOYOTA hand-held tester to the DLC3.
If you have no TOYOTA hand-held tester, connect the positive
(+) lead from the battery to terminal 4 of the connecter, and the
4 5 negative (-) lead to terminal 5.
(j) Measure the fuel pressure.
Fuel pressure:
301 - 347 kPa (3.1 - 3.5 kgf/cm2, 44 - 50 psi)
Battery
If pressure is high, replace the fuel pressure regulator.
B09206 If pressure is low, check the Fuel hoses and connections, Fuel
pump, Fuel filter, and Fuel pressure regulator.
(k) Disconnect the TOYOTA hand- held tester from the
DLC3.
(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.
(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 (95336-08070), 09268-45014
(09268-41200, 09268-41220, 09268-41250)
(q) Reconnect the fuel tube (fuel tube connector).
CAUTION:
Perform connecting operations of the fuel tube connector
(quick type) after observing the precautions.
B09223
(r) Install the fuel pipe clamp.
(s) Reconnect the negative (-) terminal cable to the battery.
(t) Check for fuel leakage.
3. REMOVE REAR SEAT CUSHION
4. REMOVE FLOOR SERVICE HOLE COVER
5. DISCONNECT FUEL PUMP & SENDER GAUGE
CONNECTOR
B09220
2002 ECHO (RM884U)
Author : Date : 718
SF-9
SFI - FUEL PUMP
6. INSPECT FUEL PUMP RESISTANCE
Ohmmeter Using an ohmmeter, measure the resistance between terminals
5 4 and 5.
4
Resistance:
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