Diagnostic Modes

The self-diagnostic system can detect ECCS malfunctions and store related trouble code(s). Trouble codes, including intermittent codes, are stored in ECU memory and are available for interpretation unless codes have been cleared.

The 2 self-diagnostic systems used are based around single or dual Light Emitting Diodes (LEDs), located on ECU. For system application, see SELF-DIAGNOSTIC SYSTEM table. For ECU locations, see ECU LOCATIONS table in this article.