Use of Scan Tools

Disconnecting the battery or the IPC connectors will not clear a DTC. A DTC can only be cleared in one of the following three ways:
^ Using the IPC reading DTC feature.
^ Using a scan tool.
^ The IPC will automatically clear a DTC if the malfunction has not occurred within 50 ignition cycles.

Most all information in diagnostic tables will refer to the scan tool for diagnostic support.

Clear any history DTC after a system malfunction is corrected in order to prevent future misdiagnosis.