Scan Tool State Display Test Mode

The switch (component) inputs to the Powertrain Control Module (PCM) have two recognized states; HIGH and LOW. The PCM cannot recognize the difference between a selected switch position versus an open circuit, a short circuit or a defective switch. If the State Display screen shows the change from HIGH to LOW or LOW to HIGH, assume the entire switch circuit to the PCM functions properly. From the state display screen, access either State Display Inputs and Outputs or State Display Sensors.