Toyota Celica 2005 Repair Manual page 299

DI−100
3 Check for open and short in harness and connector between ECM and throttle
position sensor.
E4
VTA
ECM Connector
OK
Replace ECM (See page SF−78).
4 Check throttle position sensor.
Component Side:
Throttle Position Sensor
T1
VTA
E2
Front View
OK
2005 CELICA (RM1131U)
DIAGNOSTICS
PREPARATION:
(a)
(b)
CHECK:
(a)
VC
(b)
E2
OK:
A21348
CHECK:
Measure the resistance between the terminals of VC and VTA
of ECM connector and body ground.
OK:
(a)
(b)
OK:
VC
A21413
− ENGINE (1ZZ−FE)
Reconnect the throttle position sensor connector.
Disconnect the ECM connector.
Measure the resistance between terminals VC and E2 of
ECM connector.
Measure the resistance between terminals VTA and E2
of ECM connector.
Tester Connection
VC (E4−2) − E2 (E4−18)
VTA (E4−23) −
E2 (E4−18)
Resistance: 10 kΩ or higher
NG Repair or replace harness or connector.
Disconnect the T1 throttle position sensor connector.
Measure the resistance between the terminals of the
throttle position sensor.
Tester Connection
VC (T1−1) − E2 (T1−2)
VTA (T1−3) − E2 (T1−2)
NG Replace throttle position sensor.
298
Throttle Valve Specified Condition
⎯
Fully closed
Fully open 2.0 to 10.2 kΩ
Throttle Valve Specified Condition
⎯
Fully closed
Fully open 2.0 to 10.2 kΩ
2.5 to 5.9 kΩ
0.2 to 5.7 kΩ
2.5 to 5.9 kΩ
0.2 to 5.7 kΩ