ACTUATOR TEST Mode
WARNING: This page is about a different car, the 1995 Plymouth Voyager, 1995 Plymouth Grand Voyager, 1995 Dodge Grand Caravan, 1995 Dodge Caravan, and 1995 Chrysler Town & Country. However, it is still accessible from the selected car via links, so may be relevant.
This function allows user to check for proper operation of output circuits or devices, which PCM cannot internally recognize. DRB allows PCM to activate these outputs or devices, allowing an observer to verify proper operation.
Most tests available in this mode provide an audible or visual indication of device operation (click of relay contacts, spray fuel, etc.). With exception of an intermittent condition, if a device functions properly during its test, it can be assumed that device, wiring and its driver circuit are functioning properly.