2005 LEXUS ES300 engine

100IZ-01
A86347DLC3
Hand-held Tester
A86347DLC3
Hand-held Tester
- ENGINE CONTROL SYSTEMSFI SYSTEM (3MZ-FE)
10-1
2006 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
SFI SYSTEM (3MZ-FE)
ON-VEHICLE INSPECTION
1. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE
ASSY
(a) Check the operation.
(1) Connect the hand-held tester to the DLC3.
(2) Turn the ignition switch ON.
(3) Start the engine and allow it to warm up.
(4) Connect the hand-held tester, then select VVT from
the ACTIVE TEST menu.
(5) Check the engine speed when the OCV is operated
with the hand-held tester.
Standard:
Tester OperationSpecified Condition
OCV is OFFNormal engine speed
OCV is ONRough idle or engine stall
If the operation is not as specified, inspect the camshaft timing
oil control valve (see page 10-2).
2. INSPECT THROTTLE BODY ASSY
(a) Check the operation (throttle control motor).
(1) Turn the ignition switch ON.
(2) When turning the accelerator pedal position sensor
lever, check the running sound of the motor. Also,
check that there is no friction sound.
If the operation is not as specified, inspect the throttle body (see
page 10-2).
(b) Check the operation (throttle position sensor).
(1) Connect the hand-held tester to the DLC3.
(2) Turn the ignition switch ON.
(3) Check that the check engine warning light does not
light up.
(4) Check that the throttle valve opening percentage
(THROTTLE POS) of CURRENT DATA showns the
standard value.
Standard throttle valve opening percentage:

60 % or more
NOTICE:
When checking the standard throttle valve opening per-
centage, the transmission is in the neutral position.
3. INSPECT ACCELERATOR PEDAL POSITION SENSOR
(a) Inspect the voltage.
(1) After turning the ignition switch ON, check CURRENT DATA, then verify that the throttle position
sensor voltage is within the standard value.
Standard voltage: 0.6 to 1.0 V
If the voltage is not as specified, inspect the accelerator pedal (see page 10-2).

100J0-01
A86282
Ohmmeter
A86283Battery Spool Valve
A84676Battery Voltmeter
Air 10-2
- ENGINE CONTROL SYSTEMSFI SYSTEM (3MZ-FE)
2007 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
INSPECTION
1. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE
ASSY
(a) Inspect the resistance.
(1) Using an ohmmeter, measure the resistance be-
tween the terminals.
Standard:
Tester ConnectionSpecified Condition
1 (-) - 2 (+)6.9 to 7.9 W at 20
C (68
F)
If the resistance is not as specified, replace the camshaft timing
oil control valve.
(b) Check the operation.
(1) Connect the positive (+) lead from the battery to ter-
minal 2 (+) and negative (-) lead to terminal 1 (-),
then check the movement of the spool valve.
NOTICE:
Confirm that the spool valve moves freely and does not get
stuck in any position.
HINT:
Bad returning of the spool valve resulted from catching foreign
objects causes subtle pressure leak to the advanced direction.
In that case, DTC can be detected.
2. INSPECT MASS AIR FLOW METER
(a) Check the operation.
(1) Apply battery voltage across terminals 1 (+B) and 2
(E2G).
(2) Using voltmeter, connect the positive (+) tester
probe to terminal 3 (VC), and negative (-) tester
probe to terminal 2 (E2G).
(3) Blow air into the mass air flow sensor, then check
that the voltage fluctuates.
If the operation is not as specified, replace the mass air flow
sensor.

A84677
Ohmmeter
-20 0 20406080
(-4) (32) (68)(104)(140)(176)
Temperature
C (
F) 30
0.2 0.515 10 20
Resistance kW
A84678
Ohmmeter
-20 0 20406080
(-4) (32) (68)(104)(140)(176)
Temperature
C (
F) 30
0.2 0.515 10 20
Resistance kW
- ENGINE CONTROL SYSTEMSFI SYSTEM (3MZ-FE)
10-3
2008 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
(b) Inspect the resistance.
(1) Using an ohmmeter, measure the resistance be-
tween the terminals.
Standard:
Tester ConnectionSpecified Condition
4 (THA) - 5 (E2)13.6 to 18.4 kW at -20
C (-4
F)
4 (THA) - 5 (E2)2.21 to 2.69 kW at 20
C (68
F)
4 (THA) - 5 (E2)0.493 to 0.667 kW at 60
C (140
F)
If the resistance is not as specified, replace the mass air flow
sensor.
3. INSPECT ENGINE COOLANT TEMPERATURE
SENSOR
(a) Inspect the resistance.
(1) Using an ohmmeter, measure the resistance be-
tween the terminals.
Standard:
Tester ConnectionSpecified Condition
1 (E2) - 2 (THW)2.32 to 2.59 kW at 20
C (68
F)
1 (E2) - 2 (THW)0.310 to 0.326 kW at 80
C (176
F)
NOTICE:
When checking the engine coolant temperature sensor in
water, be careful not to allow water to intrude into the termi-
nals. Then dry the engine coolant temperature sensor after
checking.
If the resistance is not as specified, replace the engine coolant
temperature sensor.

A86281
Ohmmeter
A84680
Ohmmeter
A86284
Ohmmeter 10-4
- ENGINE CONTROL SYSTEMSFI SYSTEM (3MZ-FE)
2009 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
4. INSPECT THROTTLE BODY ASSY
(a) Inspect the resistance.
(1) Using an ohmmeter, measure the resistance be-
tween the terminals.
Standard:
Tester ConnectionSpecified Condition
1 (M-) - 2 (M+)0.3 to 100 W at 20
C (68
F)
3 (E2) - 5 (VC)1.2 to 3.2 kW at 20
C (68
F)
If the resistance is not as specified, replace the throttle body.
5. INSPECT KNOCK SENSOR
(a) Inspect the resistance.
(1) Using an ohmmeter, measure the resistance be-
tween the terminals.
Standard:
Tester ConnectionSpecified Condition
1 (Output)- 2 (Ground)120 to 280 W at 20
C (68
F)
If the resistance is not specified, replace the knock sensor.
6. INSPECT ACCELERATOR PEDAL ASSY (NORMAL
PEDAL)
(a) Inspect the resistance.
(1) Using an ohmmeter, measure the resistance be-
tween the terminals.
Standard:
Tester ConnectionSpecified Condition
2 (VPA2) - 3 (EP1)5.0 kW or less
1 (EP2) - 5 (VPA1)5.0 kW or less
3 (EP1) - 6 (VCP1)2.25 to 4.75 kW
1 (EP2) - 4 (VCP2)2.25 to 4.75 kW
If the resistance is not specified, replace the accelerator pedal.

A86285
Ohmmeter
A84683
OhmmeterBattery
A84683
OhmmeterBattery
- ENGINE CONTROL SYSTEMSFI SYSTEM (3MZ-FE)
10-5
2010 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
7. INSPECT ACCELERATOR & BRAKE PEDAL ASSY
(POWER PEDAL)
(a) Inspect the resistance.
(1) Using an ohmmeter, measure the resistance be-
tween the terminals.
Standard:
Tester ConnectionSpecified Condition
3 (EP1) - 5 (VPA1)5.0 kW or less
1 (EP2) - 2 (VPA2)5.0 kW or less
3 (EP1) - 6 (VCP1)2.25 to 4.75 kW
1 (EP2) - 4 (VCP2)2.25 to 4.75 kW
If the resistance is not specified, replace the accelerator &
brake pedal.
8. INSPECT MAIN RELAY
(a) Inspect the resistance.
(1) Using an ohmmeter, measure the resistance be-
tween the terminals.
Standard:
Tester ConnectionSpecified Condition
3 - 510 kW or higher
3 - 5Below 1W
(Apply battery voltage to terminals 1 and 2
If the result is not as specified, replace the main relay.
9. INSPECT CIRCUIT OPENING RELAY
(a) Inspect the resistance.
(1) Using an ohmmeter, measure the resistance be-
tween the terminals.
Standard:
Tester ConnectionSpecified Condition
3 - 510 kW or higher
3 - 5Below 1W
(Apply battery voltage to terminals 1 and 2
If the result is not as specified, replace the circuit opening relay.

100J1-01
A86244
(a)
(b)
RH Bank:
A86306
(a)
(b)
LH Bank: 10-6
- ENGINE CONTROL SYSTEMCAMSHAFT TIMING OIL CONTROL VALVE
ASSY (3MZ-FE)
2011 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
CAMSHAFT TIMING OIL CONTROL VALVE ASSY (3MZ-FE)
REPLACEMENT
1. DISCONNECT ENGINE WIRE NO. 3 (BATTERY NEGATIVE TERMINAL)
2. REMOVE V-BANK COVER SUB-ASSY (See page 10-1 1)
3. REMOVE CAMSHAFT TIMING OIL CONTROL VALVE
ASSY
(a) Disconnect the 2 camshaft timing oil control valve con-
nectors.
(b) Remove the 2 bolts, then remove the 2 camshaft timing
oil control valves.
HINT:
The camshaft timing oil control valve is installed with the bolt.
4. INSTALL CAMSHAFT TIMING OIL CONTROL VALVE ASSY
(a) Apply a light coat of engine oil to the O-ring on each camshaft timing oil control valve.
(b) Install the 2 camshaft timing oil control valves with the 2 bolts.
Torque: 8.0 NVm (80 kgfVcm, 71 in.Vlbf)
NOTICE:
Be careful not to twist the O-ring.
(c) Connect the 2 camshaft timing oil control valve connectors.
5. INSTALL V-BANK COVER SUB-ASSY (See page 10-1 1)
6. CONNECT ENGINE WIRE NO. 3 (BATTERY NEGATIVE TERMINAL)
Torque: 5.4 NVm (55 kgfVcm, 48 in.Vlbf)
7. CHECK FOR ENGINE OIL LEAKS
8. SYSTEM INITIALIZATION (See page 19-15)

100J2-02
A86246
(a)(b)
(b)
- ENGINE CONTROL SYSTEMMASS AIR FLOW METER (3MZ-FE)
10-7
2012 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
MASS AIR FLOW METER (3MZ-FE)
REPLACEMENT
1. DISCONNECT ENGINE WIRE NO. 3 (BATTERY NEGATIVE TERMINAL)
2. REMOVE MASS AIR FLOW METER
(a) Disconnect the mass air flow meter connector.
(b) Remove the 2 screws, then remove the mass air flow me-
ter.
3. INSTALL MASS AIR FLOW METER
4. CONNECT ENGINE WIRE NO. 3 (BATTERY NEGATIVE TERMINAL)
Torque: 5.4 NVm (55 kgfVcm, 48 in.Vlbf)
5. SYSTEM INITIALIZATION (See page 19-15)

100J3-02
A86247
(a)
(b)
Deep Socket
Wrench 19
10-8- ENGINE CONTROL SYSTEMENGINE COOLANT TEMPERATURE
SENSOR (3MZ-FE)
2013 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
ENGINE COOLANT TEMPERATURE SENSOR (3MZ-FE)
REPLACEMENT
1. DISCONNECT ENGINE WIRE NO. 3 (BATTERY NEGATIVE TERMINAL)
2. REMOVE RADIATOR LOWER AIR DEFLECTOR (See page 19-5)
3. DRAIN ENGINE COOLANT (See page 16-9)
4. REMOVE ENGINE COOLANT TEMPERATURE
SENSOR
(a) Disconnect the engine coolant temperature sensor con-
nector.
(b) Using a deep socket wrench 19, remove the engine cool-
ant temperature sensor and gasket.
5. INSTALL ENGINE COOLANT TEMPERATURE SENSOR
(a) Using a deep socket wrench 19, install a new gasket and the engine coolant temperature sensor.
Torque: 20 NVm (200 kgfVcm, 14 ftVlbf)
(b) Connect the engine coolant temperature sensor connector.
6. CONNECT ENGINE WIRE NO. 3 (BATTERY NEGATIVE TERMINAL)
Torque: 5.4 NVm (55 kgfVcm, 48 in.Vlbf)
7. ADD ENGINE COOLANT (See page 16-9)
8. CHECK FOR ENGINE COOLANT LEAKS (See page 16-1)
9. INSTALL RADIATOR LOWER AIR DEFLECTOR
10. SYSTEM INITIALIZATION (See page 19-15)