A01614
FI017--01
A01611
Port p
A01725
Disconnect
Vacuum
A01622
VC
VTA
TDL
E2
A01613
Air Valve
Port
--
ELECTRONIC FUEL INJECTION
THROTTLE BODY (1RZ--E)
FI--31
THROTTLE BODY (1RZ--E)
ON--VEHICLE INSPECTION
1.
INSPECT THROTTLE BODY
(a)
Check that the throttle linkage moves smoothly.
(b)
Check the vacuum at each port.
S
Start the engine.
S
Check the vacuum with your finger.
Port name
At idle
Other than idle
P
No vacuum
Vacuum
2.
INSPECT THROTTLE POSITION SENSOR
(a)
Disconnect the sensor connector.
(b)
Apply vacuum to the throttle opener
(c)
Using an ohmmeter, check the continuity between each
terminal.
Throttle valve condition
Between terminals
Resistance
Fully closed
VTA -- E2
0.2 -- 5.7 k
Ω
Fully closed
IDL -- E2
2.3 k
Ω
or less
Open
IDL -- E2
Infinity
Fully open
VTA -- E2
2.0 -- 10.2 k
Ω
--
VC -- E2
2.5 -- 5.9 k
Ω
(d)
Reconnect the sensor connector.
3.
CHECK AIR VALVE OPERATION
Check the engine rpm by closing the air valve port on the throttle
body.
S
At low temperature (Coolant temperature: below
80
˚
C (176
˚
F)): When the air valve port is closed,
the engine speed should drop.
S
After warm--up:
When the air valve port is closed, check that the
engine speed does not drop more than 100 rpm.
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3RZ-F,3RZ-FE