Connect the CH A,B probe of scan tool to the APS 1 terminal 2 and the APS 2 terminal 3 individually after turning the ignition switch OFF and then start the engine.

Check the APS 1 and 2 signal waveform when depressing the accelerator pedal fully one time.

ARE THERE APS 1 AND APS 2 SIGNAL WAVEFORM PRORERLY DISPLAYED ?

YES

NO

a.

Replace the APS.

WAVEFORM ANALYSIS

If you want the APS 1 or APS 2 waveform to check with the Mass air flow meter sensor signal, Go to " DTC 0103 ". This test should be inspected after depressing the HOLD mode from run after the sudden acceleration. As accel pedal is pressed down fully, the intensity of the APS 1 & 2 waveform increases individually. APS 1 signal voltage is less than 1V to over 4V and APS 2 is 1/2 voltage as against APS 1 voltage. The waveform pattern become increasing upward rapidly when the engine speed increases. If the waveform pattern becomes distorted after the sudden acceleration. replace the APS

MONITORING FOR PENDING DTC SET ?

YES

NO