Component Inspection

Check APS

IG "OFF" and install a GDS.
Connect probe to APS1 and APS2 to check signal waveform by using oscilloscope function.

Measure signal waveform of APS by pressing and depressing accelerator pedal.

Specification : Signal waveform will be displayed.

VOLTAGE SPECIFICATION

Pedal Position	Output Voltage (V) (Vref = 5.0V)
Pedal Position	APS1	APS2
C.T.	0.7~0.8V	0.29~0.46V
W.O.T.	3.85~4.35V	1.93~2.18V

Fig 1: Screen Display - Normal Waveform Of APS1 & APS2 With Acceleration

Courtesy of KIA MOTORS AMERICA, INC.

Fig 2: Measuring APS Waveform

Courtesy of KIA MOTORS AMERICA, INC.

Is the measured resistance within specification?
YES
- Substitute with a known - good PCM and check for proper operation. If the problem is corrected, replace PCM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NOTE: There is a memory reset function on GDS that can erase optional parts automatically detected and memorized by PCM. Before or after testing PCM on the vehicle, use this function to reuse the PCM on the others
NO
- Substitute with a known-good APS and check for proper operation. If the problem is corrected, replace APS and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.