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Component Description
NFEC1313
The throttle control motor is operated by the ECM and it opens and closes the throttle valve.
The current opening angle of the throttle valve is detected by the throttle position sensor and it provides feed-
back to the ECM to control the throttle control motor to make the throttle valve opening angle properly in
response to driving condition.
On Board Diagnosis Logic
NFEC1452
This self-diagnosis has the one trip detection logic.
DTC No.
Trouble diagnosis
name
DTC Detecting Condition Possible Cause
P1128
1128
Throttle control motor
circuit short
ECM detects short both circuits between ECM and
throttle control motor.
I Harness or connectors
(Throttle control motor circuit is
shorted.)
I Electric throttle control actuator
(Throttle control motor)
DTC Confirmation Procedure
NFEC1453
NOTE:
If “DTC Confirmation Procedure” has been previously conducted,
always turn ignition switch “OFF” and wait at least 10 seconds
before conducting the next test.
SEF058Y
With CONSULT-II
1) Turn ignition switch “ON” and wait at least 2 seconds.
2) Select “DATA MONITOR” mode with CONSULT-II.
3) Start engine and let it idle for 5 seconds.
4) If DTC is detected, go to “Diagnostic Procedure”, EC-489.
With GST
Follow the procedure “With CONSULT-II” above.
GI
MA
EM
LC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P1128 THROTTLE CONTROL MOTOR
Component Description
EC-487
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