System Diagnosis: Notes

Self-diagnostic capabilities of this system, if properly utilized, can simplify testing. Single Board Engine Controller (SBEC) monitors several different engine control system circuits.

If a problem is sensed with a monitored circuit, a fault code is stored in engine controller, for eventual display to technician. If problem is repaired or ceases to exist, engine controller cancels fault code after 50 ignition on/off cycles.

Once codes are known, refer to FAULT CODES to determine questionable circuit. Test circuits, and repair or replace components as required. To clear codes, refer to CLEARING TROUBLE CODES  .