Diagnostic Information And Procedures; Charging System Symptom Diagnosis - Suzuki Intruder VZ1500 Service Manual

1J-2 Charging System:

Charging System Symptom Diagnosis

Condition
Generator does not
charge
Generator does charge,
but charging rate is below
the specification
Generator overcharges
Unstable charging
Battery overcharges
Battery runs down quickly Trouble in charging system.
Battery "sulfation"
"Sulfation", acidic white
powdery substance or
spots on surface of cell
plates

Diagnostic Information and Procedures

Possible cause
Open- or short-circuited lead wires, or
loose lead connections.
Short-circuited, grounded or open
generator coil.
Short-circuited or punctured regulator/
rectifier.
Lead wires tend to get short- or open-
circuited or loosely connected at
terminals.
Grounded or open-circuited generator
coil.
Defective regulator/rectifier.
Defective cell plates in the battery.
Internal short-circuit in the battery.
Damaged or defective regulator/rectifier. Replace.
Poorly grounded regulator/rectifier.
Lead wire insulation frayed due to
vibration, resulting in intermittent short-
circuiting.
Internally short-circuited generator.
Defective regulator/rectifier.
Faulty regulator/rectifier.
Faulty battery.
Poor contact of generator lead wire
coupler.
Cell plates have lost much of their active
materials a result of overcharging.
Internal short-circuit in the battery.
Too low battery voltage.
Too old battery.
Incorrect charging rate. (When not in
use battery should be checked at least
once a month to avoid sulfation.)
The battery was left unused in a cold
climate for too long.
Cracked battery case.
Battery has been left in a run-down
condition for a long time.
Correction / Reference Item
Repair, replace or connect properly.
Replace.
Replace.
Repair or retighten.
Replace.
Replace.
Replace the battery.
Replace the battery.
Clean and tighten ground connection.
Repair or replace.
Replace.
Replace.
Replace.
Replace.
Repair.
Check the generator, regulator/rectifier and
circuit connections and make necessary
adjustments to obtain specified charging
operation.
Replace the battery and correct the charging
system.
Replace the battery.
Recharge the battery fully.
Replace the battery.
Replace the battery.
Replace the battery if badly sulfated.
Replace the battery.
Replace the battery.
B940H21A04001