MPI <4G9> -
Troubleshooting
13A-100
Code No. 0120 Throttle position sensor system
Probable cause
Range of Check
D
Ignition switch: ON
D
The throttle position sensor is normal.
Set Conditions
D
The sensor output voltage is 0.2 V or less for four seconds.
or
D
The sensor output voltage is 4.85 V or more for four seconds, and the
output voltage of the throttle position sensor (1st channel) is 1.2 V or more.
or
D
The throttle position sensor and combination output voltage is outside 4 - 6
V.
D
Malfunction of throttle position sensor
D
Open or short circuit in the throttle position sensor
circuit or loose connector contact
D
Malfunction of the engine-ECU <M/T>
D
Malfunction of the engine-A/T-ECU <A/T>
OK
To the next page
OK
Check the trouble symptoms.
NG
Replace the engine-ECU <M/T> or
engine-A/T-ECU <A/T>.
OK
Check the harness wire between the
throttle position sensor and the
engine-ECU <M/T> or
engine-A/T-ECU <A/T>.
NG
Repair
(2) NG
Check the following connector:
B-34 <M/T>, B-94 <A/T>
NG
Repair
OK
Check the trouble symptoms.
NG
Replace the engine-ECU <M/T> or
engine-A/T-ECU <A/T>.
OK
OK
Check the harness wire between the
throttle position sensor and the
engine-ECU <M/T> or
engine-A/T-ECU <A/T>, and repair if
necessary.
NG
Check throttle position sensor.
(Refer to P.13A-84*.)
NG
Replace
NG
Repair
NG
Check the following connector:
B-34 <M/T>, B-94 <A/T>
NG
Repair
OK
Check the following connector:
A-05
NG
Repair
Check the harness wire between the
throttle position sensor and the
engine-ECU <M/T> or
engine-A/T-ECU <A/T>.
NG
Repair
OK
Measure at throttle position sensor
connector A-05.
D
Disconnect the connector and
measure at the harness side.
(1) The voltage between terminal 1
and earth
(Ignition switch: ON)
OK:
4.8 - 5.2 V
(2) Resistance between terminal 4
and earth
OK:
2
W
or less
(1) NG
Measure at engine-ECU <M/T> or
engine-A/T-ECU <A/T> connector
B-34 <M/T>, B-94 <A/T>.
D
Measure the voltage at the
engine-ECU <M/T> or
engine-A/T-ECU <A/T> connector
terminals.
D
Ignition switch: ON
D
The voltage between terminal 81
<M/T> or 46 <A/T> and earth
OK:
4.8 - 5.2 V
OK
Check the following connector:
B-34 <M/T>, B-94 <A/T>
MUT-
II
Data list
14 Throttle position sensor
OK:
Refer to P.13A-153, DATA
LIST REFERENCE TABLE.
OK
Intermittent malfunction
(Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions.)
NOTE
*: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).