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Chapter 9
ELECTRICAL DIAGNOSTICS (DC)
PROBLEM POSSIBLE CAUSE POSSIBLE FIX
No DC (12 volt) power Battery switch in “o ” position Turn selector switch to “on” posi-
tion,
Weak or dead battery Charge or replace battery
Battery not charging (engine run-
ning)
Loose belt Tighten belt
Faulty alternator Repair/replace alternator
Faulty volt meter Replace volt meter
Battery will not hold charge Faulty or old battery Replace battery; use exact replace-
ment
12 volt equipment not working Equipment switch in “o ” position Switch to “on”position
Circuit breaker/fuse blown Reset breaker. Replace fuse.
Weak or dead battery Replace battery
Corroded connection Eliminaate corrosion
Loose conductor/ground wire Tighten connection
Internal equipment short Replace equipment component