Hyundai Palisade: Engine Control System / Accelerator Position Sensor (APS)
Description and operation
Installed on the accelerator pedal module, the Accelerator Position Sensor (APS)
detects the rotation angle of the accelerator pedal. The APS is one of the most
important sensors in engine control system. Therefore, each of the two sensors
comprising the APS has individual power and ground line. The second sensor monitors
the first and its output voltage is half the first one. If the ratio of the
sensor 1 to 2 is out of the range (approximately 1/2), the diagnostic system
judges that it is abnormal.

Specifications
Accelerator
Position
|
Output Voltage (V) [Vref = 5V]
|
APS1
|
APS2
|
C.T
|
0.7 - 0.8
|
0.33 - 0.43
|
W.O.T
|
3.85 - 4.35
|
1.93 - 2.18
|

Schematic diagrams

Harness Connector

Repair procedures
1. |
Connect the diagnostic tool on the Data Link Connector (DLC).
|
2. |
Switch "ON" the ignition.
|
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
|
0.33 - 0.43
|
W.O.T
|
3.85 - 4.35
|
1.93 - 2.18
|
|
1. |
Switch "OFF" the ignition and disconnect the negative (-) battery terminal.
|
2. |
Disconnect the accelerator position sensor connector (A).
|
3. |
Remove the accelerator position sensor (B) after loosening the mounting
bolts.
Accelerator pedal sensor 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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Categories

Even though your vehicle is equipped
with the OCS, never install a child
restraint in the front passenger's seat.
An inflating air bag can forcefully
strike a child or child restraint resulting
in serious or fatal injury.
read more