SYMPTOM DIAGNOSTIC INDEX [i-ELOOP] QUICK DIAGNOSTIC CHART [i-ELOOP] No.1 MESSAGE RELATED TO i-ELOOP SYSTEM MALFUNCTION INDICATED IN DISPLAY [i-ELOOP] No.2 PRE-CHARGE MODE IS PERFORMED FREQUENTLY [i-ELOOP] No.3 i-ELOOP-RELATED GAUGE IN DISPLAY DOES NOT MOVE [i-ELOOP]