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Description
NHEC0074
NOTE:
If DTC P0120 is displayed with DTC P0510, first perform the trouble diagnosis for DTC P0510. Refer to
EC-438.
COMPONENT DESCRIPTION
NHEC0074S01
The throttle position sensor responds to the accelerator pedal movement. This sensor is a kind of potentiom-
eter which transforms the throttle position into output voltage, and emits the voltage signal to the ECM. In
addition, the sensor detects the opening and closing speed of the throttle valve and feeds the voltage signal
to the ECM.
Idle position of the throttle valve is determined by the ECM receiving the signal from the throttle position sen-
sor. This sensor controls engine operation such as fuel cut. On the other hand, the “Wide open and closed
throttle position switch”, which is built into the throttle position sensor unit, is not used for engine control.
AEC929
CONSULT-II Reference Value in Data Monitor
Mode
NHEC0075
Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
THRTL POS SEN
I Engine: After warming up, idle
the engine
Throttle valve: fully closed 0.15 - 0.85V
I Engine: After warming up
I Ignition switch: ON
(Engine stopped)
Throttle valve: fully opened 3.5 - 4.7V
ABSOL TH·P/S
I Engine: After warming up, idle
the engine
Throttle valve: fully closed 0.00%
I Engine: After warming up
I Ignition switch: ON
(Engine stopped)
Throttle valve: fully opened Approx. 80.0%
DTC P0120 THROTTLE POSITION SENSOR
Description
EC-176
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