ELECTRICAL
4181383 First Edition 4-47
4
Charging Circuit
Symptom: Battery not charging.
Symptom: Alternator light stays on.
Probable Cause Remedy
Faulty alternator output circuit. Make sure alternator output cable and battery positive (+) cable terminals are clean and
tight.
Check continuity between starter battery terminal and battery positive (+) terminal.
Continuity must be indicated.
Faulty battery ground circuit. Make sure battery negative (–) cable terminals are clean and tight.
Check continuity between battery negative (–) terminal and ground.
Continuity must be indicated.
Faulty battery. Check specific gravity of the individual battery cells.
Probable Cause Remedy
Missing excitation voltage. With the key switch in the run position, measure voltage between alternator ignition
terminal (Org/Wht wire).
Voltage must be approximately 12 VDC.
Faulty alternator. With the engine running, measure voltage between jump start connector terminals.
Voltage must be approximately 14 VDC.
If the voltage is below 12 volts, replace the alternator.
To Next Page
Loading...
Need help?
General
