Suzuki GSX-R 1000 Service Manual: Charging system symptom diagnosis

Suzuki GSX-R 1000 Service Manual / Engine / Charging system / Diagnostic information and procedures / Charging system symptom diagnosis

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

Diagnostic information and procedures

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