Kia Picanto: Engine Control System / Accelerator Position Sensor (APS)
Specifications
Accelerator
Position
|
Output Voltage (V) [Vref = 5V]
|
APS1
|
APS2
|
C.T
| 0.7 - 0.8
| 0.32 - 0.42
|
W.O.T
| 3.98 - 4.22
| 1.93 - 2.17
|
Description and operation
Installed
on the accelerator pedal module, the Accelerator Position Sensor (APS)
detects the rotation angle of the accelerator pedal. As the APS is one
of the most important sensors in engine control system, it consists of
two sensors each with separate power and ground line. The second sensor
monitors the first sensor and its output voltage is half of the first
one. If the ratio of the sensor 1 and 2 is out of the range
(approximately 1/2), the diagnostic system judges that it is abnormal.

Schematic diagrams


Repair procedures
1. | Connect the KDS on the Data Link Connector (DLC). |
2. | Turn the ignition switch ON. |
3. | Measure the output voltage of the APS 1 and 2 at C.T and W.O.T.
Accelerator
Position
|
Output Voltage (V) [Vref = 5V]
|
APS1
|
APS2
| C.T
| 0.7 - 0.8
| 0.32 - 0.42
| W.O.T
| 3.98 - 4.22
| 1.93 - 2.17
|
 |
1. | Turn the ignition switch OFF and disconnect the battery negative (-) terminal. |
2. | Disconnect the accelerator position sensor connector (A). |
3. | Remove the installation nuts (B), and then remove the accelerator pedal module.
Accelerator pedal module mounting nut:
12.7 - 15.7 N·m (1.3 - 1.6 kgf·m, 9.4 - 11.6 lb·ft)
Accelerator pedal module mounting bolt:
8.8 - 13.7 N·m (0.9 - 1.4 kgf·m, 6.5 - 10.1 lb·ft) |
 |
1. | Install in the reverse order of removal. |
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