Page 1514 of 1897
- PREPARATIONENGINE MECHANICAL
PP-3
53 Author: Date:
2001 AVALON (RM808U)
09249-63010Torque Wrench AdaptorRH camshaft timing pulley
09330-00021Companion Flange Holding ToolCrankshaft pulley
09608-03071ReplacerSpark plug tube gasket
09816-30010Oil Pressure Switch SocketKnock sensor
09843-18020Diagnosis Check Wire
09950-50012Puller C Set
(09951-05010)Hanger 150Crankshaft pulley
Crankshaft timing pulley
(09952-05010)Slide ArmCrankshaft pulley
Crankshaft timing pulley
(09953-05010)Center Bolt 100Crankshaft pulley
Crankshaft timing pulley
(09953-05020)Center Bolt 150Crankshaft pulley
Crankshaft timing pulley
(09954-05010)Claw No.1Crankshaft timing pulley
(09954-05020)Claw No.2Crankshaft pulley
09950-70010Handle Set
Page 1593 of 1897
B06677B09120B09122
No.2
Vacuum GaugeNo.1
Vacuum
Gauge
SF06B-05
B06678B09121B09123
Approx.
27.6 kPa No.2 No.1
Approx. 27.6 kPa
- SFIACOUSTIC CONTROL INDUCTION SYSTEM (ACIS)
SF-53
1162 Author: Date:
2001 AVALON (RM808U)
ACOUSTIC CONTROL INDUCTION
SYSTEM (ACIS)
ON-VEHICLE INSPECTION
INSPECT INTAKE AIR CONTROL VALVE
(a) Using a 3-way connector, connect vacuum gauge to the
actuator hose.
(b) Start the engine.
(c) While the engine is idling, check that the vacuum gauge
needle does not move.
(d) Rapidly depress the accelerator pedal to fully open posi-
tion and check that the vacuum gauge needle momentari-
ly fluctuates up to approx. 26.7 kPa (200 mmHg, 7.9
in.Hg). (The actuator rod is pulled out.)
Page 1609 of 1897
A10518
5 mm
Hexagon
Wrench
SF071-05
A10838
TOYOTA Hand-Held Tester
DLC3
B06523
Sound Scope
SF-84
- SFIFUEL CUT RPM
1193 Author: Date:
2001 AVALON (RM808U)
FUEL CUT RPM
INSPECTION
1. REMOVE V-BANK COVER
(a) Using a 5 mm hexagon wrench, remove the 3 cap nuts.
(b) Loosen the V-bank cover fastener counterclockwise.
(c) Remove the V-bank cover.
2. WARM UP ENGINE
Allow the engine to warm up to normal operating temperature.
3. CONNECT LEXUS HAND-HELD TESTER OR OBDII
SCAN TOOL
(a) Connect the TOYOTA hand-held tester or OBDII scan
tool to the DLC3.
(b) Please refer to the TOYOTA hand-held tester or OBDII
scan tool operator's manual for further details.
4. INSPECT FUEL CUT OFF PRM
(a) Increase the engine speed to at least 3,500 rpm.
(b) Use a sound scope to check for injector operating noise.
(c) Check that when the throttle lever is released, injector op-
eration noise stops momentarily and then resumes.
HINT:
Measure with the A/C OFF.
Fuel return rpm: 1,200 rpm
5. DISCONNECT LEXUS HAND-HELD TESTER OR
OBDII SCAN TOOL
6. REINSTALL V-BANK COVER
(a) Using 5 mm hexagon wrench, install the V-bank cover
with the 3 cap nuts.
(b) Press down the V-bank cover fastener.
Page 1619 of 1897
A10838
TOYOTA Hand-Held Tester
DLC3
SF0LD-02
B09075
S05359
Fuel Tube Connector
SF-6
- SFIFUEL PUMP
111 5 Author: Date:
2001 AVALON (RM808U)
FUEL PUMP
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:
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 filter.
HINT:
If there is fuel pressure, you will hear the sound of fuel flowing.
If there is no pressure, check these parts:
Fusible link
Fuses
EFI main relay
Fuel pump
ECM
Wiring connections
(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 No.1 fuel pipe and take out the fuel
tube connector from its pipe.
Part No. 23801-20070
Page 1620 of 1897
B09076
Fuel Hose
Clamp
B09077
B09078
SST
SST
Retainer
No.1 Fuel
Fuel tube
Connector (Hose)
Pipe
SST
(Hose)SST
- SFIFUEL PUMP
SF-7
111 6 Author: Date:
2001 AVALON (RM808U)
(d) Remove the fuel hose clamp.
(e) Disconnect the No.1 fuel pipe (fuel tube connector) from
the fuel filter outlet.
CAUTION:
Perform disconnecting operations of the fuel tube
connector (quick type) after observing the precau-
tions (See page SF-1).
As there is retained pressure in the fuel pipe line, pre-
vent it from splashing inside the engine compart-
ment.
(f) Install SST (pressure gauge) as shown in the illustration
by using SST and fuel tube connector.
SST 09268-41047, 09268-45014
(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/cm
2, 44 - 50 psi)
If pressure is high, replace the fuel pressure regulator.
If pressure is low, check these parts:
Fuel hoses and connections
Fuel pump
Fuel filter
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/cm
2, 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/cm
2, 21 psi) or more
If pressure is not as specified, check the fuel pump, pressure
regulator and/or injectors.
Page 1630 of 1897
SF0ZW-01
A07285
E1DLC1
SST
TE1
DLC1
A07285
E1DLC1SST
TE1
DLC1
B06684
Disconnect
Plug
Plug
- SFIIDLE AIR CONTROL (IAC) VALVE
SF-43
1152 Author: Date:
2001 AVALON (RM808U)
IDLE AIR CONTROL (IAC) VALVE
ON-VEHICLE INSPECTION
1. INSPECT IAC VALVE OPERATION
(a) Initial conditions:
Engine at normal operating temperature
Idle speed checked correctly
Transmission in neutral position
A/C switch OFF
(b) Using SST, connect terminals TE1 and E1 of the
DLC1.
SST 09843-18020
(c) After engine speed is kept at approx. 1,000 rpm for 5 se-
conds, check that it returns to idle speed.
If the engine speed operation is not as specified, check the IAC
valve, wiring and ECM.
(d) Remove the SST from the DLC1.
SST 09843-18020
2. INSPECT AIR ASSIST SYSTEM
(a) Initial conditions:
Engine at normal operating temperature
Idle speed checked correctly
Transmission in neutral position
A/C switch OFF
(b) Using SST, connect terminals TE1 and E1 of the DLC1.
SST 09843-18020
(c) After engine speed is kept at 900 - 1,300 rpm for 10 se-
conds, check that it returns to idle speed.
(d) Stop the engine.
(e) Remove the V-bank cover.
(f) Disconnect the air assist hose from the air pipe, and block
off the IAC valve exit and the entry to the pipe.
(g) Start the engine and check that the idle speed reaches
500 rpm or below (the engine may stall).
If the idle does not reach 500 rpm or below, check for a leak be-
tween the air assist hoses, pipe and injectors.
(h) Remove the SST from the DLC1.
SST 09843-18020
(i) Reconnect the air assist hose to the air pipe.
(j) Reinstall the V-bank cover.
Page 1634 of 1897
B06483
SST
(Wire)
Battery
B06482
SF-24
- SFIINJECTOR
1133 Author: Date:
2001 AVALON (RM808U)
(j) If you have no TOYOTA hand-held tester, connect the
positive (+) and negative (-) leads from the battery to the
fuel pump connector (See page SF-6).
(k) Connect SST (wire) to the injector and battery for 15 se-
conds, and measure the injection volume with a gra-
duated cylinder. Test each injector 2 or 3 times.
SST 09842-30070
Volume: 60 - 73 cm
3 (3.4 - 4.5 cu in.) per 15 sec.
Difference between each injector:
13 cm
3 (0.8 cu in.) or less
If the injection volume is not as specified, replace the injector.
2. INSPECT LEAKAGE
(a) In the condition above, disconnect the test probes of SST
(wire) from the battery and check the fuel leakage from
the injector.
SST 09842-30070
Fuel drop: 1 drop or less per 12 minutes
(b) Turn the ignition switch OFF.
(c) Disconnect the negative (-) terminal cable from the bat-
tery.
(d) Remove the SST and fuel tube connector.
SST 09268-41047, 09842-30070
CAUTION:
Perform disconnecting operations of the fuel tube
connector (quick type) after observing the precau-
tions (See page SF-1).
As there is retained pressure in the fuel pipe line, pre-
vent it from splashing inside the engine compart-
ment.
(e) Disconnect the TOYOTA hand- held tester from the
DLC3.
Page 1637 of 1897
A10518
5 mm
Hexagon
Wrench
SF072-05
B06523
Sound Scope
B06522
Ohmmeter
- SFIINJECTOR
SF-19
1128 Author: Date:
2001 AVALON (RM808U)
INJECTOR
ON-VEHICLE INSPECTION
1. REMOVE V-BANK COVER
(a) Using a 5 mm hexagon wrench, remove the 3 cap nuts.
(b) Loosen the V-bank cover fastener counterclockwise.
(c) Remove the V-bank cover.
2. INSPECT INJECTOR OPERATION
Check operation sound from each injector.
(1) With the engine running or cranking, use a sound
scope to check that there is normal operating noise
in proportion to engine speed.
(2) If you have no sound scope, you can check the in-
jector operating vibration with your finger.
If no sound or unusual sound is heard, check the wiring connec-
tor, injector or injection signal from the ECM.
3. INSPECT INJECTOR RESISTANCE
(a) Disconnect the injector connector.
(b) Using an ohmmeter, measure the resistance between the
terminals.
Resistance: 13.4 - 14.2 W at 20°C (68°F)
If the resistance is not as specified, replace the injector.
(c) Reconnect the injector connector.
4. REINSTALL V-BANK COVER
(a) Using 5 mm hexagon wrench, install the V-bank cover
with the 3 cap nuts.
(b) Press down the V-bank cover fastener.
