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A91219
VVLU
ECM
VLU
EVLU
B
W
R
T14
Intake Shutter (Throttle Valve) Position Sensor
1
3
2
24
E23
35
E23
14
E23
VC
E2
VTA
5V
2 3
1
A92970
Intake Shutter Position
Sensor Connector
Wire Harness Side:
VC
E2
T14
Front View
VTA
G34806
E23
ECM Connector
VLU
VVLU
ELU
05--78
--
DIAGNOSTICS
ECD SYSTEM (1ND--TV)
COROLLA Supplement (RM1129E)
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Read freeze frame data using an intelligent tester ll. Freeze frame data record the engine condition when
malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was
moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction oc-
curred.
1
CHECK HARNESS AND CONNECTOR(INTAKE SHUTTER (THROTTLE VALVE)
POSITION SENSOR -- ECM)
(a)
Disconnect the T14 intake shutter position sensor con-
nector.
(b)
Disconnect the E23 ECM connectors.
(c)
Check the resistance.
Standard (Check for open):
Tester Connection
Specified Condition
VVLU (E23--24) -- VC (T14--1)
VLU (E23--35) -- VTA (T14--3)
Below 1
Ω
ELU (E23--14) -- E2 (T14--2)
Standard (Check for short):
Tester Connection
Specified Condition
VVLU (E23--24) or VC (T14--1) -- Body ground
VLU (E23--35) or VTA (T14--3) -- Body ground
10 k
Ω
or higher
ELU (E23--14) or E2 (T14--2) -- Body ground
g
(d)
Reconnect the intake shutter position sensor connector.
(e)
Reconnect the ECM connectors.
NG
REPAIR
OR
REPLACE
HARNESS
OR
CONNECTOR
OK
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TOYOTA COROLLA REPAIR MANUAL SUPP 1129E