IG "OFF". Connect GDS.
Connect probe to APS1 and APS2 to check signal waveform by using oscilloscope function. Start engine.
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 |
Fig.1) Normal waveform of APS1 & APS2 with acceleration
Is the measured signal waveform normal?
 | ▶ 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. |
 | ▶ 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. |
