Typical location of the exhaust gas recirculation valve.

Typical location of the exhaust gas recirculation valve.
Connection of the USB Autoscope IV to the valve control wire and to the valve position sensor signal wire.

Connection of the USB Autoscope IV to the valve control wire and to the valve position sensor signal wire.
Setting the USB Autoscope IV to 4-channel mode.

Setting the USB Autoscope IV to 4-channel mode.