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12.30
Acid density too low.
nein
Check charge status of battery.
Is battery discharged?
yes
Charge battery.
no
Check acid concentration.
Is acid concentration too low?
yes
Adjust acid concentration.
no
Check line network. Is there short-circuit in line
network?
yes
Check electrical system.
no
Check alternator. Alternator does not charge
correctly?
yes
Check generator/regulator; replace if neces-
sary.
Acid leak at plugs.
no
Check acid level.
Is acid level too high?
yes
Adjust acid level.
no
Check charging voltage.
Is charging voltage too high?
yes
Check regulator; replace if necessary.
Excessive drop in terminal voltage
under load.
no
Check voltage at battery.
Is battery discharged?
yes
Charge battery.
no
Check charging voltage.
Is charging voltage too low?
yes
Check regulator; replace if necessary.