Component Inspection

■ Check APS 

1. IG "OFF". Connect GDS.
2. Connect probe to APS1 and APS2 to check signal waveform by using oscilloscope function. Start engine.
3. Measure signal waveform of APS by pressing and depressing accelerator pedal.

   Specification:  Signal waveform will be displayed as follows.

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

4. Is the measured signal waveform normal?

   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.

   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.