Component Inspection

Engine Control

P2138 Accelerator Position Sensor 1 & 2 Signal Voltage Correlation - Component Inspection

Component Inspection

Check APS
1. IG "OFF" and install a scantool
2. Connect probe to APS1 and APS2 to check signal waveform by using oscilloscope function.
3. Measure signal waveform of APS by pressing and depressing accelerator pedal.

Specification : Signal waveform will be displayed as follows.








Fig 1) Normal waveform of APS1 & APS2 with acceleration




4. Is the measured signal waveform O.K?