Notes On Intermittents

If code EO13 is history, start engine and enter diagnostics. See ENTERING DIAGNOSTIC MODE  . Operate engine at fast idle until "AUTO" closed loop status light is turned on. Observe parameter while manipulating circuits No. 412 and 413 wiring. If parameter ED33 changes from fluctuating to fixed at about .45 volts, repair intermittent open circuit. Check for clean, tight, corrosion free connections throughout circuits No. 412 and 413.