Component Inspection

Check APS

Ignition "ON" & ENG "OFF".
Measure signal waveform of APS by pressing and depressing accelerator pedal.

Specification :

OUTPUT VOLTAGE SPECIFICATION

Pedal Position	Output Voltage (V) [Vref = 5.0V]
Pedal Position	APS1	APS2
C.T	0.7 ~ 0.8V	0.275 ~ 0.475V
W.O.T	3.8 ~ 4.4V	1.75 ~ 2.35V

Fig 1: APS Signal Waveform

G06860711

Courtesy of HYUNDAI MOTOR CO.

Fig 2: Checking APS Signal Waveform

G06860712

Courtesy of HYUNDAI MOTOR CO.

Is the measured signal waveform O.K?
YES

Substitute with a known-good PCM and check for proper operation. If the problem is corrected, replace PCM and then go to VERIFICATION OF VEHICLE REPAIR procedure.

NOTE: There is a memory reset function on scantool 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.