Disconnect ACV from vehicle.

IG key ON.

Check if ACV is stuck using actuation test function of scan tool.

If it is not work well or stuck, replace ACV and go to "Verification of Vehicle Repair" procedure.

IG key OFF.

Disconnect ACV connector.

Check resistance between 'Motor (+)' terminal and 'Motor (-)' terminal of ACV connector. (ACV component side)

Is the measured value within specification?

	▶ Go to "Check ACV position sensor resistance" procedure.
	▶ Replaces ACV, and go to "Verification of Vehicle Repair" procedure.

IG key OFF.

Disconnect ACV connector.

Check resistance between 'Supply' terminal and 'F/B Ground' terminal of ACV. (ACV component side)

Is the measured value within specification?

	▶ Go to "ACV motor waveform inspection" procedure.
	▶ Replaces ACV, and go to "Verification of Vehicle Repair" procedure.

Engine ON.

Connect one probe of oscilloscope to 'Motor (+)' terminal of ACV connector. (ACV component side)

Connect another probe of oscilloscope to 'Motor (-)' terminal of ACV connector.(ACV component side)

Monitor the signal waveform at idle and during acceleration over 3000rpm.

Warm the engine up. (engine temperature over 70℃)

Connect one probe of oscilloscope to 'signal' terminal of ACV connector. (ACV component side)

IG key "OFF" when the engine coolant temperature is above 70℃.

Monitor the signal waveform of learning right after IG key "OFF".

Fig.1) Signal at idle

Fig.2) Signal when Key "ON" → "OFF"

※ Opne and close repeats 3times for ACV position learning when IG key OFF and engine coolant temperature is over 70℃.

Is the measured value within specification?

	▶ Go to "Verification of Vehicle Repair" procedure.
	▶ Replaces ACV, and go to "Verification of Vehicle Repair" procedure.