GDI ± Troubleshooting
13A-18
Code No.14 Throttle position sensor system (2nd channel) Probable cause
The throttle valve controller determines whether a failure is present or not, and
sends a signal indicating its result to the engine-ECU.
Range of check
D Ignition switch: ON
D Throttle position sensor (1st channel) is normal
Set conditions
D The throttle position sensor (1st channel) output voltage is 1.24 V or more, and
the (2nd channel) output voltage is 4.6 V or more for one second.
or
D The throttle position sensor (1st channel) output voltage is 3.53 V or less, and
the (2nd channel) output voltage is 0.2 V or less for one second.
or
D Throttle position sensor (1st and 2nd channels) output voltages are outside 4
to 6 V.
D Malfunction of throttle position sensor (2nd channel)
D Open circuit or short-circuited harness wire in throttle
position sensor (2nd channel) or poor connector
contact
D Faulty throttle valve controller
D Malfunction of the engine-ECU
Check trouble symptom.
NG
Replace the engine-ECU.
NG
Repair
OK
Replace the throttle valve controller.
Check the throttle position sensor. (Re-
fer to P.13A-103.)
NG
Replace
OK
Measure at throttle position sensor con-
nector A-03.
D Disconnect the connector, and
measure at the harness side.
D Voltage 1 and earth
(Ignition switch: ON)
OK: 4.8 ± 5.2 V
D Continuity between 3 and earth
OK: Continuity
NG
Check the following connector: C-48
NG
Repair
OK
Check trouble symptom.
NG
Check the harness wire between the
throttle position sensor and throttle
valve controller.
OK
NG
Check the following connector: A-03
NG
Repair
OK
Check trouble symptom.
NG
Check the harness wire between the
engine-ECU and throttle position sen-
sor.
OK
Adjust the throttle position sensor.
(Refer to P.13A-92.)
NG
Repair
OK
Measure at throttle valve controller con-
nector C-48.
D Connect the connector.
D Disconnect the throttle valve control
servo connector (Close the throttle
valve fully by finger).
D Voltage between 7 and earth
(Ignition switch: ON)
OK: 0.1 ± 1.1 V
NG
Check the following connector: A-03
NG
Repair
OK
Check trouble symptom.
NG
Check the harness wire between the
throttle valve controller and throttle
position sensor, and repair if necessary.
OK
Replace the throttle valve controller.
Measure at engine-ECU connector
C-19.
D Connect the connector.
D Disconnect the throttle valve control
servo connector (Close the throttle
valve fully by finger).
D Voltage between terminal 78 and
earth
(Ignition switch: ON)
OK: 4.0 ± 4.8 V
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