10068–01
–
ENGINE CONTROL SYSTEM
SFI SYSTEM (2AZ–FE)
10–1
1431
Author:
Date:
2002 CAMRY REPAIR MANUAL (RM881U)
SFI SYSTEM (2AZ–FE)
ON–VEHICLE INSPECTION
1.
INSPECTION THROTTLE BODY
(a)
Inspect the throttle control motor for operating sound.
(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.
(b)
Inspect the throttle position sensor.
(1)
Connect the hand–held tester or OBD II scan tool 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 the CURRENT DATA
shown the standard value.
Standard throttle valve opening percentage:
60 % or more
2.
INSPECT ACCELERATOR PEDAL POSITION SENSOR
(a)
When turning ignition switch ON, check that the voltage of the throttle position sensor of the CURRENT
DATA shown the standard value.
Standard voltage: 0.6 – 1.0 V
3.
INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSY
(a)
Connect the hand–held tester or OBD II scan tool to the DLC3.
(b)
Turn the ignition switch ON.
(c)
Start the engine and warmed it up.
(d)
Connect the hand–held tester and select the VVT from the ACTIVE TEST menu.
(e)
Check the engine speed when the OCV is operated by the hand–held tester.
Standard:
VVT system is OFF (OCV is OFF): Normal engine speed
VVT system is ON (OCV is ON): Rough idle or engine stalled
10069–01
3 2 1
4
5
–20
0
20
40
60
80
100
0.1
0.2
0.3
0.5
1
2
3
5
10
20
30
TEMPERATURE
C(
F)
RESIST
ANCE k
Ω
(–4) (32) (80)
(140)
(104)
(212)
(176)
Air
E2
THA
VG
E2G
+B
A50378
1
2
Valve
A50377
10–2
–
ENGINE CONTROL SYSTEM
SFI SYSTEM (2AZ–FE)
1432
Author:
Date:
2002 CAMRY REPAIR MANUAL (RM881U)
INSPECTION
1.
INTAKE AIR FLOW METER SUB–ASSY
(a)
Output voltage inspection.
(1)
Apply battery voltage across terminals 1 (+B) and 2
(E2G).
(2)
Using a voltmeter, connect the positive (+) tester
probe to terminal VG, and negative (–) tester probe
to terminal E2G.
(3)
Blow air into the MAF meter, and check that the volt-
age fluctuates.
(b)
Resistance inspection.
(1)
Using an ohmmeter, measure the resistance be-
tween terminals 4 (THA) and 5 (E2).
Resistance:
–20
C (–4
F) 13.6
– 18.4 k
Ω
20
C (68
F) 2.21 – 2.69 k
Ω
60
C (140
F) 0.493 – 0.667 k
Ω
2.
CAMSHAFT TIMING OIL CONTROL VALVE ASSY
(a)
Resistance inspection.
(1)
Using an ohmmeter, measure the resistance be-
tween the terminals.
Resistance: 6.9 – 7.9
Ω
at 20
C (68
F)
(b)
Movement inspection.
(1)
Connect the positive (+) lead from the battery to ter-
minal 1 and negative (–) lead to terminal 2, and
check the movement of the valve.
NOTICE:
Confirm the valve does not adhere.
HINT:
Bad returning of the valve by entrance of foreign objects causes
subtle pressure leak to the advanced direction. Then, DTC can
be detected.
A60812
VPA2
EP2
VCP2
VPA1
VCP1
EP1
A63203
GND
M–
M+
VC
TEMPERATURE
C(
F)
RESIST
ANCE
k
Ω
30
20
10
5
2
1
0.5
0.3
0.2
0.1
3
–20
0
20 40
60 80 100
(–4) (32) (80)
(140)
(104)
(212)
(176)
A59896
–
ENGINE CONTROL SYSTEM
SFI SYSTEM (2AZ–FE)
10–3
1433
Author:
Date:
2002 CAMRY REPAIR MANUAL (RM881U)
3.
ACCELERATOR PEDAL ASSY
(a)
Resistance inspection
(1)
Using an ohmmeter, measure the resistance be-
tween the terminals.
Resistance:
Terminal No.
Resistance
2 (VPA2)
⇔
3 (EP1)
5.0 k
Ω
or less
5 (VPA1)
⇔
1 (EP2)
5.0 k
Ω
or less
6 (VCP1)
⇔
3 (EP1)
2.25 – 4.75 k
Ω
4 (VCP2)
⇔
1 (EP2)
2.25 – 4.75 k
Ω
4.
THROTTLE BODY ASSY
(a)
Using an ohmmeter, measure the resistance between the
terminals.
Resistance:
Terminal No.
Resistance
3 (VC)
⇔
6 (GND)
1.2 – 3.2 k
Ω
(20
C)
2 (M+)
⇔
1 (M–)
0.3 – 100 k
Ω
(20
C)
5.
E.F.I. ENGINE COOLANT TEMPERATURE SENSOR
(a)
Resistance inspection.
(1)
Using an ohmmeter, measure the resistance be-
tween terminal 1 and 2.
Resistance:
Approx. 20
C (68
F) 2.29 – 2.6 k
Ω
Approx. 80
C (176
F) 0.300 – 0.327 k
Ω
NOTICE:
In case of checking the water temperature sensor in the wa-
ter, be careful not to allow water to go into the terminals,
and after checking, wipe out the sensor.
P01630
E12471
10–4
–
ENGINE CONTROL SYSTEM
SFI SYSTEM (2AZ–FE)
1434
Author:
Date:
2002 CAMRY REPAIR MANUAL (RM881U)
6.
KNOCK CONTROL SENSOR
(a)
Continuity inspection.
(1)
Using an ohmmeter, check that no continuity exists
between the terminal and body.
7.
E.F.I. CIRCUIT OPENING RELAY ASSY
E.F.I ECU RELAY
(a)
Continuity inspection.
(1)
Using an ohmmeter, check that continuity exists be-
tween each terminal.
Specified condition:
Between terminal 1 and 2 Continuity
Between terminal 3 and 5 No continuity
(2)
Using an ohmmeter, check that continuity exists be-
tween terminals 3 and 5 when the battery voltage is
applied across terminals 1 and 2.
1006A–01
A60797
N
⋅
m (kgf
⋅
cm, ft
⋅
lbf)
: Specified torque
Non–reusable part
Throttle Body Gasket
Water By–pass Hose No.2
Throttle Body Assy
Fuel Pipe Support
Air Cleaner Cap
Sub–Assy
Water By–pass Hose
30 (305, 22)
–
ENGINE CONTROL SYSTEM
THROTTLE BODY ASSY (2AZ–FE)
10–5
1435
Author:
Date:
2002 CAMRY REPAIR MANUAL (RM881U)
THROTTLE BODY ASSY (2AZ–FE)
COMPONENTS
1006B–01
A60798
B09649
A60798
10–6
–
ENGINE CONTROL SYSTEM
THROTTLE BODY ASSY (2AZ–FE)
1436
Author:
Date:
2002 CAMRY REPAIR MANUAL (RM881U)
Removal & Installation and Disassembly & Reassembly
1.
DRAIN COOLANT(See page
16–6
)
2.
REMOVE AIR CLEANER CAP WITH AIR CLEANER HOSE
3.
REMOVE THROTTLE BODY ASSY
(a)
Disconnect the throttle body assy connector.
(b)
Disconnect the vacuum hose from the throttle body.
(c)
Disconnect 2 water by–pass hoses.
(d)
Remove 4 bolts and throttle body assy from intake man-
ifold.
(e)
Remove the throttle body gasket.
4.
INSTALL THROTTLE BODY ASSY
(a)
Install a new gasket on the intake manifold, as shown in
the illustration.
(b)
install the throttle body assy with 4 bolts.
Torque: 30 N
⋅
m (305 kgf
⋅
cm, 22 ft
⋅
lbf)
(c)
Connect 2 water by–pass hoses to the throttle body assy.
(d)
Connect the throttle body assy connector.
(e)
Connect the vacuum hose to the throttle body assy.
5.
ADD COOLANT (See page
16–6
)
6.
INSPECT CHECK ENGINE COOLANT LEAK (See page
16–1
)
10064–01
–
ENGINE CONTROL SYSTEM
SFI SYSTEM (1MZ–FE)
10–7
1437
Author:
Date:
2002 CAMRY REPAIR MANUAL (RM881U)
SFI SYSTEM (1MZ–FE)
ON–VEHICLE INSPECTION
1.
INSPECTION THROTTLE BODY
(a)
Inspect the throttle control motor for operating sound.
(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.
(b)
Inspect the throttle position sensor.
(1)
Connect the hand–held tester or OBD II scan tool 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 the CURRENT DATA
shown the standard value.
Standard throttle valve opening percentage:
60 % or more
2.
INSPECT ACCELERATOR PEDAL POSITION SENSOR
(a)
When turning ignition switch ON, check that the voltage of the throttle position sensor of the CURRENT
DATA shown the standard value.
Standard voltage: 0.6 – 1.0 V
10065–01
3 2 1
4
5
–20
0
20
40
60
80
100
0.1
0.2
0.3
0.5
1
2
3
5
10
20
30
TEMPERATURE
C(
F)
RESIST
ANCE k
Ω
(–4) (32) (80)
(140)
(104)
(212)
(176)
Air
E2
THA
VG
E2G
+B
A50378
A60485
VPA2
EP2
VCP2
VCP1
EP1
VPA1
10–8
–
ENGINE CONTROL SYSTEM
SFI SYSTEM (1MZ–FE)
1438
Author:
Date:
2002 CAMRY REPAIR MANUAL (RM881U)
INSPECTION
1.
INTAKE AIR FLOW METER SUB–ASSY
(a)
Output voltage inspection.
(1)
Apply battery voltage across terminals 1 (+B) and 2
(E2G).
(2)
Using a voltmeter, connect the positive (+) tester
probe to terminal VG, and negative (–) tester probe
to terminal E2G.
(3)
Blow air into the MAF meter, and check that the volt-
age fluctuates.
(b)
Resistance inspection.
(1)
Using an ohmmeter, measure the resistance be-
tween terminals 4 (THA) and 5 (E2).
Resistance:
–20
C (–4
F) 13.6 – 18.4 k
Ω
20
C (68
F) 2.21 – 2.69 k
Ω
60
C (140
F) 0.493 – 0.667 k
Ω
2.
ACCELERATOR PEDAL ASSY
(a)
Resistance inspection
(1)
Using an ohmmeter, measure the resistance be-
tween terminals.
Resistance:
Terminal
Resistance
2 (VPA2)
⇔
3 (EP1)
5.0 k
Ω
or less
5 (VPA1)
⇔
1 (EP2)
5.0 k
Ω
or less
6 (VCP1)
⇔
3 (EP1)
2.25 – 4.75 k
Ω
4 (VCP2)
⇔
1 (EP2)
2.25 – 4.75 k
Ω
A60486
M–
M+
2
1
3
4
A60487
E2
VTA2
VTA1
VC
TEMPERATURE
C(
F)
RESIST
ANCE k
Ω
30
20
10
5
2
1
0.5
0.3
0.2
0.1
3
–20
0
20 40
60
80 100
(–4) (32) (80)
(140)
(104)
(212)
(176)
A50371
P01630
–
ENGINE CONTROL SYSTEM
SFI SYSTEM (1MZ–FE)
10–9
1439
Author:
Date:
2002 CAMRY REPAIR MANUAL (RM881U)
3.
THROTTLE BODY ASSY
(a)
Resistance inspection
(1)
Using an ohmmeter, measure the resistance be-
tween terminals.
Resistance: 0.3 – 100
Ω
at 20
C (68
F)
4.
E.F.I. THROTTLE POSITION SENSOR
(a)
Resistance inspection.
(1)
Using an ohmmeter, measure the resistance be-
tween terminals 1 (VC) and 4 (E2).
Resistance: 1.2 – 3.2 k
Ω
5.
E.F.I. ENGINE COOLANT TEMPERATURE SENSOR
(a)
Resistance inspection.
(1)
Using an ohmmeter, measure the resistance be-
tween each terminal.
Resistance:
Approx. 20
C (68
F) 2.32 – 2.59 k
Ω
Approx. 80
C (176
F) 0.310 – 0.326 k
Ω
NOTICE:
In case of checking the water temperature sensor in the wa-
ter, be careful not to allow water to go into the terminals,
and after checking, wipe out the sensor.
6.
KNOCK CONTROL SENSOR
(a)
Continuity inspection.
(1)
Using an ohmmeter, check that no continuity exists
between the terminal and body.
E12471
10–10
–
ENGINE CONTROL SYSTEM
SFI SYSTEM (1MZ–FE)
1440
Author:
Date:
2002 CAMRY REPAIR MANUAL (RM881U)
7.
E.F.I. CIRCUIT OPENING RELAY ASSY
E.F.I ECU RELAY
AIR FUEL RATIO SENSOR HEATER RELAY
(a)
Continuity inspection.
(1)
Using an ohmmeter, check that continuity exists be-
tween each terminal.
Specified condition:
Between terminal 1and 2 Continuity
Between terminal 3and 5 No continuity
(2)
Using an ohmmeter, check that continuity exists be-
tween terminals 3 and 5 when the battery voltage is
applied across terminals 1 and 2.
10066–01
A60483
Throttle Body Assy
E.F.I. Throttle Position Sensor
Air Cleaner Cap w/Air Cleaner Hose
Non–reusable part
N·m (kgf·cm, ft·lbf) : Specified torque
Throttle Body Gasket
2.0 (20, 18 in.
⋅
lbf)
20 (199, 14 in.
⋅
lbf)
20 (199, 14 in.
⋅
lbf)
–
ENGINE CONTROL SYSTEM
THROTTLE BODY ASSY (1MZ–FE)
10–11
1441
Author:
Date:
2002 CAMRY REPAIR MANUAL (RM881U)
THROTTLE BODY ASSY (1MZ–FE)
COMPONENTS
10067–01
A60474
A60482
A59525
10–12
–
ENGINE CONTROL SYSTEM
THROTTLE BODY ASSY (1MZ–FE)
1442
Author:
Date:
2002 CAMRY REPAIR MANUAL (RM881U)
Removal & Installation and Disassembly & Reassembly
1.
DRAIN COOLANT(See page
16–20
)
2.
REMOVE AIR CLEANER CAP WITH AIR CLEANER HOSE
(a)
Disconnect the MAF meter connector.
(b)
Disconnect the VSV connector for canister closed valve (CCV) and the air hose.
(c)
Disconnect the 4 vacuum hoses and the ventilation hose.
(d)
Remove the air cleaner cap with the hose.
3.
REMOVE FRONT SUSPENSION UPPER BRACE CENTER
(W/ FRONT SUSPENSION BRACE UPPER CENTER)
4.
REMOVE THROTTLE BODY ASSY
(a)
Disconnect the throttle position sensor connector.
(b)
Disconnect the throttle control motor connector.
(c)
Disconnect the 2 water bypass hoses.
(d)
Remove the 2 bolts, 2 nuts. throttle body and gasket.
5.
REMOVE E.F.I. THROTTLE POSITION SENSOR
(a)
Remove the 2 set screws and throttle position sensor.
6.
INSTALL E.F.I. THROTTLE POSITION SENSOR
(a)
Check that the throttle valve is under the condition of the
opener opening angle (about 7
).
A59526
A59527
Turn
–
ENGINE CONTROL SYSTEM
THROTTLE BODY ASSY (1MZ–FE)
10–13
1443
Author:
Date:
2002 CAMRY REPAIR MANUAL (RM881U)
(b)
Install the sensor to the place where is at 20 – 30
rotated
to the right from the specified installation position.
(c)
Gradually turn sensor counterclockwise until it touches
the throttle valve shaft, and temporarily tighten the 2 set
screws.
(d)
Connect the throttle position sensor connector.
(e)
Connect the hand–held tester or OBD II scan tool to the
DLC3.
(f)
Turn the ignition switch ON.
NOTICE:
After turning the ignition switch ON, do not depress the ac-
celerator pedal.
(g)
While reading the valve of the throttle valve opening per-
centage (THROTTLE POS) of the CURRENT DATA, turn
the throttle position sensor slowly to left and right and set
the sensor at the center value of the standard value, and
then tighten the screws.
Standard throttle valve opening percentage:
16.8 – 18.4 %
Torque: 2.0 N
⋅
m (20 kgf
⋅
cm, 18 in.
⋅
lbf)
NOTICE:
After turning the ignition switch ON, do not depress the ac-
celerator pedal.
(h)
Recheck throttle valve opening percentage.
If the throttle valve opening percentage is not as specified, re-
peat step (g).
(i)
Perform fully closed throttle valve by hand and check that
the valve of the throttle valve opening percentage
(THROTTLE POS) of the CURRENT DATA stays with the
standard value.
Standard throttle valve opening percentage:
10 – 14 %
If the throttle valve opening percentage is not as specified, re-
peat step (g) to (i).
(j)
Paint the 2 set screws.
(k)
Turn the ignition switch OFF.
(l)
Disconnect the hand–held tester or OBD II scan tool from
the DLC3.
(m)
Disconnect the throttle position sensor connector.
7.
INSTALL THROTTLE BODY ASSY
(a)
Install a new gasket and the throttle body.
Torque: 20 N
⋅
m (199 kgf
⋅
cm,
14 ft
⋅
lbf)
10–14
–
ENGINE CONTROL SYSTEM
THROTTLE BODY ASSY (1MZ–FE)
1444
Author:
Date:
2002 CAMRY REPAIR MANUAL (RM881U)
8.
INSTALL FRONT SUSPENSION UPPER BRACE CENTER
(W/ FRONT SUSPENSION BRACE UPPER CENTER)
Torque: 80 N
⋅
m (816 kgf
⋅
cm,
59 ft
⋅
lbf)
9.
ADD COOLANT (See page
16–20
)
10.
CHECK ENGINE COOLANT LEAK (See page
16–20
)
11.
INSPECT FUNCTION OF THROTTLE BODY ASSY
(See page
10–7
)