Page 1849 of 5135
A81613
Fuel Pipe
Clamp
Push
11±14
±
FUEL FUEL INJECTOR ASSY(1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
8.CONNECT FUEL TUBE SUB±ASSY
(a)Push in the connector to the pipe until it makes ºclickº sound.
NOTICE:
Check if there is any damage or foreign objects on the
connected part.
After connecting, check if the connector and the pipe
are securely connected by pulling on them.
(b)Install the fuel pipe clamp.
9.CHECK FOR FUEL LEAKS (See page 11±5)
10.INSTALL CYLINDER HEAD COVER NO.2 (See page 10±9)
Page 1850 of 5135
110TY±01
A78470
Fuel Injector O±Ring
Non±reusable part
N´m (kgf´cm, ft´lbf) : Specified torque
7.0 (71, 62 in.´lbf)
Ventilation Hose
Fuel Injector Connector No. 1 Spacer Injector Vibration
InsulatorFuel Delivery Pipe
Sub±assy
Fuel Tube Sub±assy Fuel Pipe Clamp No. 2 Cylinder Head Cover No. 2 Fuel Injector O±Ring
Fuel Injector Grommet
Fuel Injector Assy Fuel Injector Assy 1ZZ±FE:
Clip 3ZZ±FE:
19 (189, 14)
9.0 (91, 80 in.´lbf)
11±10
± FUELFUEL INJECTOR ASSY (1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
FUEL INJECTOR ASSY (1ZZ±FE/3ZZ±FE)
COMPONENTS
Page 1851 of 5135
110UV±01
Fuel Tube Connector
A50710
Fuel Tube Connector
SST
(Hose)
B12947
SST (Hose)SST
(Clamp)
Vinyl Tube SST (Union)
O±Ring
A51875
11±8
±
FUEL FUEL SYSTEM(1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION
1.FUEL INJECTOR ASSY
(a)Inspect injector resistance (1)Using an ohmmeter, measure the resistance be-tween the terminals.
Resistance:
EngineRersistanceCondition
1ZZ±FE13.4 to 14.2 20 C (68 F)
3ZZ±FE13.8 to 15.2 20 C (68 F)
If the resistance is not as specified, replace the injector.
(b)Inspect injector inspection
CAUTION:
This test involves high±pressure fuel and electricity. Take
every precaution regarding safe handling of both the fuel
and the electricity. Preform this test in a safe area, and
avoid any sparks or flame. Do not smoke.
(1)Obtain new No. 1 fuel pipe (part No. 23901±0D030)and remove the fuel tube connector from the pipe.
(2)Install the fuel tube connector to SST (hose), then connect the tube connector and the fuel pipe.
SST09268±41047 (95336±08070)
CAUTION:
Connect the fuel tube connector (quick type) after observ-
ing the precautions to prevent fuel from spraying.
(3)Install the O±ring to the injector.
(4)Connect SSTs (union and hose) to the injector, andhold the injector and the union with SST (clamp)
SST09268±41047 (95336±08070, 09268±41110, 09268±41300)
(5)Put the injector into a graduated cylinder.
CAUTION:
Install a suitable vinyl tube onto the injector to contain gas-
oline spray.
(6)Operate the fuel pump.(See Page 11±5)
Page 1852 of 5135
SST
A50700
B00069
A16628A32859
± FUELFUEL SYSTEM (1ZZ±FE/3ZZ±FE)
11±9
AVENSIS REPAIR MANUAL (RM1018E)
(7) Connect SST (wire) to the injector and the battery
for 15 seconds, and measure the injection volume
with a graduated cylinder. Test each injector 2 or 3
times.
SST 09842±30080
Injection volume:
EngineInjection volumeDifference between each
injector
1ZZ±FE
60 to 73 cm3
(3.7 to 4.5 cu in.)
in 15 seconds13 cm3 (0.8 cu in.) or less
3ZZ±FE
45 to 55 cm3
(2.7 to 3.3 cu in.)
in 15 seconds10 cm3 (0.6 cu in.) or less
NOTICE:
Always do the switching at the battery side.
If the injection volume is not as specified, replace the injector.
(c) Inspect leakage
(1) In the condition above, disconnect the test probes
of SST (wire) from the battery and check the fuel
leakage from the injector.
Fuel drop:
1ZZ±FE1 drop or less in 12 minutes
3ZZ±FE1 drop or less in 5 minutes
2. INSPECT FUEL PUMP
(a) Insect fuel pump resistance.
(1) Using an ohmmeter, measure the resistance be-
tween the terminals.
Resistance: 0.2 to 3.0 at 20C (68F)
(b) Inspect fuel pump operation
(1) Apply battery voltage to both the terminals. Check
that the pump operates.
NOTICE:
These tests must be done quickly (within 10 seconds)
to prevent damage to the pump.
Keep fuel pump as far away from the battery as pos-
sible.
Always do the switching at the battery side.
Page 1853 of 5135
110UU±01
Fuel Tube Connector
A50710
A60083
Fuel Pipe
Clamp No.1
AA
B12941
±
FUEL FUEL SYSTEM(1ZZ±FE/3ZZ±FE)
11±5
AVENSIS REPAIR MANUAL (RM1018E)
ON±VEHICLE INSPECTION
1.CHECK FUEL PRESSURE
(a)Discharge the pressure in the fuel system and take pre-
cautions for possible fuel spillage. (See page 11±1)
(b) Check that the battery voltage is above 12 V.
(c) Disconnect the negative (±) battery cable.
(d) Pull out the connecter from a new fuel tube.
HINT:
Part No. 23901±0D030
(e) Disconnect the fuel tube clamp from the fuel tube connec- tor.
(f) Disconnect the fuel tube connector from the fuel pipe while pinching part A with fingers as shown in the illustra-
tion.
CAUTION:
Do not disconnect the fuel tube connector (quick
type) until after you have discharged the fuel system
pressure and taken appropriate steps to prevent fuel
spillage.
There may be remained pressure in the fuel lines after
discharging the pressure.
Take precautions to prevent fuel from spraying on
you or your clothing or inside the engine compart-
ment.
Page 1854 of 5135
No.1 Fuel Pipe
Fuel Tube Connector
SST
(Clip)
SST (T joint)SST
SST
(Hose)
B12975
11±6
± FUELFUEL SYSTEM (1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
(g) Install SST (pressure gauge) and a fuel tube connector
using SST as shown in the illustration.
SST 09268±41047(95336±08070),09268±45014
(09268±41250, 09268±41200, 09268±41220)
(h) Wipe up any gasoline.
(i) Reconnect the negative (±) battery cable.
(j) Connect the hand±hand tester to the DLC3.
(k) Measure the fuel pressure.
Fuel pressure:
304 to 343 kPa (3.1 to 3.5 kgf/cm
2, 44 to 50 psi)
If pressure is high, replace the fuel pressure regulator.
If pressure is low, check the fuel hoses connections, the fuel
pump, the fuel filter and the fuel pressure regulator.
(l) Disconnect the hand±held tester from the DLC3.
(m) Start the engine.
(n) Measure the fuel pressure at idle.
Fuel pressure:
304 to 343 kPa (3.1 to 3.5 kgf/cm
2, 44 to 50 psi)
(o) Stop the engine.
(p) Check that the fuel pressure remains as specified for 5
minutes after the engine has stopped.
Fuel pressure:147 kPa (1.5 kgf/cm
2, 21 psi) or more
If pressure is not as specified, check the fuel pump, the pres-
sure regulator and/or the injectors.
(q) After checking the fuel pressure, disconnect the negative
(±) battery cable and carefully remove SST and the fuel
tube connector to prevent gasoline from splashing.
(r) Reconnect the No. 1 fuel pipe (fuel tube connector).
CAUTION:
After taking the precautions, connect the fuel tube con-
necter (quick type).
2. CHECK FUEL PUMP OPERATION AND FUEL LEAK
(a) When using the hand±held tester
(1) Connect the hand±held tester to the DLC3.
(2) Turn the ignition switch ON and the hand±held tes-
ter main switch ON.
NOTICE:
Do not start the engine.
(3) Select the active test mode on the hand±held tester.
(4) Perform the active test. Check that the fuel pump
operates and check for fuel leaks.
Page 1855 of 5135
A75342
Battery4
5
± FUELFUEL SYSTEM (1ZZ±FE/3ZZ±FE)
11±7
AVENSIS REPAIR MANUAL (RM1018E)
(b) When not using the hand±held tester
(1) Connect the positive (+) lead form the battery to ter-
minal 4 of the connector and connect the negative
(±) lead to terminal 5.
(2) Check that the pump operates.
Page 1856 of 5135
110UT±01
A75341
Fuel
Pump
Connector
B00679
Vinyl or Plastic Bag
±
FUEL FUEL SYSTEM(1ZZ±FE/3ZZ±FE)
11±1
AVENSIS REPAIR MANUAL (RM1018E)
FUEL SYSTEM(1ZZ±FE/3ZZ±FE)
PRECAUTION
1.PRECAUTION
(a)Before working on fuel system, disconnect negative (±) battery cable.
(b)Do not smoke or work near fire when handling the fuel system.
(c)Keep gasoline away from rubber or leather parts.
2.DISCHARGE FUEL SYSTEM PRESSURE
CAUTION:
Do not disconnect any part of the fuel system until
you have discharged the fuel system pressure.
Even after discharging the fuel pressure, place a
shop rag over fittings as you separate them to reduce
risk of fuel spray on yourself or in the engine compart-
ment.
(a)Disconnect the fuel pump connector.
(b)Start the engine. After the engine has stopped, turn the ignition switch OFF.
(c)Disconnect the negative (±) battery cable.
(d)Connect the fuel pump connector.
3.FUEL SYSTEM
(a)When disconnecting the high fuel pressure line, a large amount of gasoline will spill out, so observe these proce-
dures.
(1)Discharge the pressure in the fuel system. (See step 2)
(2) Disconnect the fuel pump tube. (See page 11±93)
(3) Drain the fuel that remained inside the fuel pump tube.
(4) Cover the disconnected fuel pump tubes with a vinyl or a plastic bag to prevent damage and dirt.
(5) Place a tray under the vehicle or point of disconnec-
tion to catch any fuel that may spill.