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

)