Symptom Related Diagnostic Procedures

Engine Control System Symptoms: Symptom Matrix Chart

System - Basic Engine Control System










1 - 6: The numbers refer to the order of inspection.

(continued on next page)

[A]: HARD/NO START/RESTART (EXCP. HA)

[B]: ENGINE STALL

[C]: HESITATION/SURGING/FLAT SPOT

[D]: SPARK KNOCK/DETONATION

[E]: LACK OF POWER/POOR ACCELERATION

[F]: HIGH IDLE/LOW IDLE

[G]: ROUGH IDLE/HUNTING

[H]: IDLING VIBRATION

[I]: SLOW/NO RETURN TO IDLE

[J]: OVERHEATS/WATER TEMPERATURE HIGH

[K]: EXCESSIVE FUEL CONSUMPTION

[L]: EXCESSIVE OIL CONSUMPTION

[M]: BATTERY DEAD (UNDER CHARGE)

System - Engine Mechanical & Other














1 - 6: The numbers refer to the order of inspection.

[A]: HARD/NO START/RESTART (EXCP. HA)

[B]: ENGINE STALL

[C]: HESITATION/SURGING/FLAT SPOT

[D]: SPARK KNOCK/DETONATION

[E]: LACK OF POWER/POOR ACCELERATION

[F]: HIGH IDLE/LOW IDLE

[G]: ROUGH IDLE/HUNTING

[H]: IDLING VIBRATION

[I]: SLOW/NO RETURN TO IDLE

[J]: OVERHEATS/WATER TEMPERATURE HIGH

[K]: EXCESSIVE FUEL CONSUMPTION

[L]: EXCESSIVE OIL CONSUMPTION

[M]: BATTERY DEAD (UNDER CHARGE)