Diagnostic Information

The diagnostic tables and the functional checks are designed to locate a faulty circuit or component through a process of logical decisions. The diagnostic tables are prepared with the requirement that the vehicle functioned correctly at the time of assembly and that there are not multiple faults present.

There is a continuous self-diagnosis on certain control functions. This diagnostic capability is complemented by the diagnostic procedures contained in this service information. The language of communicating the source of the malfunction is a system of diagnostic trouble codes (DTCs). When a malfunction is detected by the powertrain control module, a DTC is set and the malfunction indicator lamp (MIL) lamp is illuminated.