Lexus GS300/400 (2000 year). Service manual — part 210
B09507
B01620
Ohmmeter 3 (CL–)
4 (CL+)
1 (M+)
2 (M–)
B01942
VC
Ohmmeter
E2
B01943
VC
Ohmmeter
E2
–
SFI (2JZ–GE)
THROTTLE BODY
SF–33
1499
(2)
Turn the A/C switch ON and OFF, and check the idle
speed.
Idle speed (Transmission in neutral):
700
±
50 rpm (A/C OFF)
750
±
50 rpm (A/C ON)
NOTICE:
Perform inspection under condition without electrical load.
(3)
With engine idling, pinch the air assist hose and
check that engine speed drops, and then returns
back up to idle speed.
If operation is not as specified, check the throttle body, wiring
and ECM.
(f)
After checking the above (b) to (e), perform the diving test
and check that there is no sense of incongruity.
3.
INSPECT THROTTLE CONTROL MOTOR
(a)
Disconnect the throttle control motor connector.
(b)
Using an ohmmeter, measure the resistance between ter-
minal 3 (CL–) and 4 (CL+).
Resistance: 4.2 – 5.2
Ω
at 20
°
C (68
°
F)
(c)
Using an ohmmeter, measure the resistance between ter-
minal 1 (M+) and 2 (M–).
Resistance: 0.3 – 100
Ω
at 20
°
C (68
°
F)
If the resistance is not as specified, replace the throttle control
motor. (See page
)
(d)
Reconnect the throttle control motor connector.
4.
INSPECT THROTTLE POSITION SENSOR
(a)
Disconnect the throttle position sensor connector.
(b)
Using an ohmmeter, measure the resistance between ter-
minals VC and E2.
Resistance: 1.2 – 3.2 k
Ω
at 20
°
C (68
°
F)
If the resistance is not as specified, replace the throttle position
sensor. (See page
)
(c)
Reconnect the throttle position sensor connector.
5.
INSPECT ACCELERATOR PEDAL POSITION SEN-
SOR
(a)
Disconnect the accelerator pedal position sensor con-
nector.
(b)
Using an ohmmeter, measure the resistance between ter-
minals VC and E2.
Resistance: 1.2 – 3.2 k
Ω
at 20
°
C (68
°
F)
If the resistance is not as specified, replace the accelerator ped-
al position sensor. (See page
SF–34
–
SFI (2JZ–GE)
THROTTLE BODY
1500
(c)
Reconnect the accelerator pedal position sensor connec-
tor.
6.
REINSTALL ENGINE COVER
Reinstall the engine cover with the 4 nuts.
SF0NM–07
B09000
Intake Air Resonator
PCV Hose
PS Air Hose
Throttle Control
Motor Connector
Throttle Body Bracket
Throttle Position Sensor Connector
Water Bypass Hose
Water Bypass Hose
Engine Wire Clamp
Accelerator Pedal Position
Sensor Connector
Accelerator Cable
21 (210, 15)
N·m (kgf·cm, ft·lbf) : Specified torque
Throttle Body
Engine Cover
B01947
Cover
Accelerator Pedal Position Sensor
Washer Plate
Throttle Control Motor
Throttle Position Sensor
Bracket
x 5
–
SFI (2JZ–GE)
THROTTLE BODY
SF–35
1501
COMPONENTS
SF0NN–05
B01615
B01616
Forward
Down–Side
Diagonal
(2)
(1)
SF–36
–
SFI (2JZ–GE)
THROTTLE BODY
1502
REMOVAL
1.
DRAIN ENGINE COOLANT
2.
REMOVE ENGINE COVER
Remove the 4 nuts and engine cover.
3.
REMOVE INTAKE AIR RESONATOR
4.
REMOVE THROTTLE BODY BRACKET AND
THROTTLE BODY
(a)
Disconnect the accelerator cable.
(b)
Disconnect the throttle position sensor connector.
(c)
Disconnect the throttle control motor connector.
(d)
Disconnect the accelerator pedal position sensor con-
nector.
(e)
Disconnect the engine wire clamp from the clamp bracket
of throttle body.
(f)
Remove the 2 bolts and nut holding the throttle body to
the intake air connector.
Torque: 21 N·m (210 kgf·cm, 15 ft·lbf)
(g)
Remove the 4 nuts and throttle body bracket.
Torque: 21 N·m (210 kgf·cm, 15 ft·lbf)
(h)
Slightly slide the throttle body away from the intake air
connector.
NOTICE:
When putting up the throttle body, do not hold the motor
part.
(i)
Disconnect the 2 water bypass hoses from the throttle
body, and remove the throttle body.
HINT:
At the time of installation, please refer to the following
items.
Connect the water bypass hose with its discrimination
mark downward.
Install the with its craw direction for (1) forward and down–
side diagonal (engine side about 45
°
) for (2).
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