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Component Inspection

Check APS

Ignition "ON" & ENG "OFF".

Measure waveform of APS by pressing and depressing accelerator pedal with scantool.

SPECIFICATION:

SPECIFICATION

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

Fig 1: APS Terminals Waveform Signal Reference On Scantool

G04879988

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.