2001 TOYOTA PRIUS Service Repair Manual

B11818
A13909
B11815
B00192
Vinyl Bag
S05382
Retainer
SF±4
± SFISFI SYSTEM
1218 Author: Date:
2001 PRIUS (RM778U)
(5) Hold SST as it at step 4, push the connector to-
wards SST to put the retainers on SST champfered
parts.
(6) Slide SST and the connector together towards the
fuel tube assembly.
(e) Observe these precautions when disconnecting the fuel
tube connector (quick type).
(1) Check if there is any dirt like mud on the pipe and
around the connector before disconnecting them
and clean the dirt away.
(2) Be sure to disconnect with hands.
(3) When the connector and the pipe are stuck, pinch
the retainer between the hands, push and pull the
connector to free to disconnect and pull it out. Do
not use any tool at this time.
(4) Inspect if there is any dirt or the likes on the seal sur-
face of the disconnected pipe and clean it away.
(5) Prevent the disconnected pipe and connector from
damaging and mixing foreign objects by covering
them with a vinyl bag.
(f) Observe these precautions when connecting the fuel
tube connector (quick type).
(1) Do not reuse the retainer removed from the pipe.
(2) Must use hands without using tools when to remove
the retainer from the pipe.
(3) Check if there is any damage or foreign objects on
the connected part of the pipe.

B11830
A13909
F12396
TOYOTA Hand±Held Tester
DLC3
± SFISFI SYSTEM
SF±5
1219 Author: Date:
2001 PRIUS (RM778U)
(4) Match the axis of the connector with axis of the pipe,
and push in the connector until retainer makes a
ºclickº sound. In case that the connections is tight,
apply little amount of new engine oil on the tip of the
pipe.
(5) After having finished the connection, check if the
pipe and the connector are securely connected by
pulling them.
(6) Check if there is any fuel leakage.
(g) Observer these precautions when handling nylon tube.
(1) Pay attention not to turn the connected part of the
nylon tube and the quick connector with force when
connecting them.
(2) Pay attention not to kink the nylon tube.
(3) Do not remove the nylon tube.
(4) Must not close the piping with the nylon tube by
bending it.
(h) Check that there are no fuel leaks after doing mainte-
nance anywhere on the fuel system.
(1) Connect the TOYOTA hand±held tester to the
DLC3.
(2) Turn the ignition switch ON and push TOYOTA
hand±held tester main switch ON.
(3) Select the active test mode on the TOYOTA hand±
held tester.
(4) Please refer to the TOYOTA hand±held tester oper-
ator 's manual for further details.
(5) If you have no TOYOTA hand±held tester, connect
the positive (+) and negative (±) leads from the bat-
tery to the fuel pump connector.
(See page SF±6)
(6) Check that there are no leaks from any part of the
fuel system.
(7) Turn the ignition switch to LOCK.
(8) Disconnect the TOYOTA hand±held tester from the
DLC3.

F12396
TOYOTA Hand±Held Tester
DLC3
SF1KO±01
B11794
7
3
Battery
B11816
B09225
Fuel Tube Connector
SF±6
± SFIFUEL PUMP
1220 Author: Date:
2001 PRIUS (RM778U)
FUEL PUMP
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:
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 3 of the con-
necter, and the negative (±) lead to terminal 7.
(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
DLC3.
2. CHECK FUEL PRESSURE
(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

B11815
B00194
SST
SST
(Hose)
Retainer
Fuel pipe
SST
(Hose)
SST
(Hose)
SST
Fuel Tube
Connection
B11794
7
3
Battery
± SFIFUEL PUMP
SF±7
1221 Author: Date:
2001 PRIUS (RM778U)
(d) Disconnect the fuel tube (fuel tube connector) from the
fuel pipe.
CAUTION:

Perform disconnecting operations of the fuel tube
connector (quick type) after observing the precau-
tions.

As there is retained pressure in the fuel pipe line, pre-
vent if from splashing inside the engine comport-
ment.
(e) Install SST (pressure gauge) as shown in the illustration
by using SST and fuel tube connector.
SST 09268±41047 (95336±08070), 09268±45014
(09268±41200, 09268±41220, 09268±41250)
(f) Wipe off any splattered gasoline.
(g) Reconnect the negative (±) terminal cable to the battery.
(h) 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 3 of the connecter, and the
negative (±) lead to terminal 7.
(i) Measure the fuel pressure.
Fuel pressure:
304 ± 343 kPa (3.1 ± 3.5 kgf/cm
2, 44 ± 50 psi)
If pressure is high, replace the fuel tank.
If pressure is low, check the Fuel hoses and connections, Fuel
pump.
(j) Disconnect the TOYOTA hand±held tester from the
DLC3.
(k) Start the engine.
(l) Measure the fuel pressure at idle.
Fuel pressure:
304 ± 343 kPa (3.1 ± 3.5 kgf/cm
2, 44 ± 50 psi)
(m) Stop the engine.
(n) Check that the fuel pressure remains as specified for 5
minutes after the engine has stopped.