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A71015
0
Accelerator Pedal Opening Angle (deg)
125
VPA1
VPA2
5
Movable Range
Usable Range
Usable Range
*
1
*
1
Movable Range
Usable Range
*
2
Accelerator pedal released (15
˚
)
Accelerator pedal depressed
(about 100
˚
)
Accelerator
P
edal
Position
Sensor
Output
Voltage
(V)
VPA2
VPA1
EVPA2
VVPA2
*
1
:
*
2
:
EVPA1
0.8
105
VVPA1
*
2
*
2
*
1
--
DIAGNOSTICS
ECD SYSTEM (1ND--TV)
05--141
COROLLA Supplement (RM1129E)
DTC
P1120
ACCELERATOR PEDAL POSITION SENSOR
CIRCUIT MALFUNCTION
HINT:
This DTC relates to the accelerator pedal position sensor.
CIRCUIT DESCRIPTION
The accelerator pedal position sensor is mounted on the accelerator pedal bracket and has the 2 sensors
to detect the accelerator position and malfunctions of the accelerator position sensor itself.
In the accelerator pedal position sensor, the voltage applied to pedal terminals VPA1 and VPA2 of the ECM
changes between 0 V and 5 V in proportion to the opening angle of the accelerator pedal. The VPA1 is a
signal to indicate the actual accelerator pedal opening angle which is used for engine control, and the VPA2
is a signal which is used for detecting a malfunction in the sensor.
DTC No.
DTC Detection Condition
Trouble Area
P1120
S
Condition (a) or (b) continues for 0.5 seconds or more:
(a) VPA1 less than 0.2 V when accelerator pedal fully released,
or VPA1 more than 4.8 V
(The MIL is illuminated as well as a DTC being set immediately
malfunction is detected)
(b) VPA2 less than 0.5 V when accelerator pedal fully released,
or VPA2 more than 4.8 V
(The MIL is illuminated as well as a DTC being set immediately
malfunction is detected)
S
Open or short in accelerator pedal position sensor circuit
S
Accelerator pedal position sensor
S
ECM
HINT:
This DTC is set when the ignition switch is in the ON position.
05MS7--01
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TOYOTA COROLLA REPAIR MANUAL SUPP 1129E