Battery current leakage
Remove the seat. (7-4)
Turn the ignition switch to the OFF position.
Disconnect the battery (-) lead wire.
Measure the current between (-) battery terminal and the (-) battery lead wire using the multi circuit tester. If the reading exceeds the specified value, leakage is evident.
![](https://motoinstruction.ru/img/suzuki/14/120829.jpg)
- 09900-25008: Multi circuit tester set
- Battery current (leak): 3 mA and less
- Tester knob indication: Current (⎓ 20 mA)
![](https://motoinstruction.ru/img/suzuki/14/120830.jpg)
Caution!
- Because the current leak might be large, turn the tester to high range first to avoid tester damage.
- Do not turn the ignition switch to the "ON" position when measuring current.
When checking to find the excessive current leakage, remove the couplers and connectors, one by one, checking each part.
Regulated voltage
Remove the seat. (7-4).
Start the engine and keep it running at 5000 r/min. with the dimmer switch turned HI position.
Measure the DC voltage between the (+) and (-) battery terminals using the multi circuit tester. If the voltage is not within the specified value, inspect the generator and regulator/rectifier. (8-10 and 8-11)
![](https://motoinstruction.ru/img/suzuki/14/120831.jpg)
Note: When making this test, be sure that the battery is in fully-charged condition.
- 09900-25008: Multi circuit tester set
- Tester knob indication: Voltage (⎓)
- Charging output (Regulated voltage): 14.0-15.5 V at 5000 r/min.
Generator coil resistance
Remove the right cowling. (7-5)
Disconnect the generator coupler (1).
![](https://motoinstruction.ru/img/suzuki/14/120832.jpg)
Measure the resistance between the three lead wires.
If the resistance is out of the specified value, replace the stator with a new one. Also, check that the generator core is insulated properly.
- 09900-25008: Multi circuit tester set
- Tester knob indication: Resistance (Ω)
- E4M Generator coil resistance:
- 0.2-0.7 Ω (Black - Black)
- ∞ Ω (Black - Ground)
Note: When making above test, it is not necessary to remove the generator.
![](https://motoinstruction.ru/img/suzuki/14/120833.jpg)
Generator no-load performance
Remove the right cowling. (7-5)
Disconnect the generator coupler.
Start the engine and keep it running at 5000 r/min.
![](https://motoinstruction.ru/img/suzuki/14/120834.jpg)
Using the multi circuit tester, measure the voltage between three lead wires.
If the tester reads under the specified value, replace the generator with a new one.
- 09900-25008: Multi circuit tester set
- Tester knob indication: Voltage (⎓)
- Generator no-load performance: 60 V and more at 5000 r/min (When engine is cold)
Regulator/rectifier
Remove the right cowling. (7-5)
Disconnect the regulator/rectifier couplers (1).
Remove the regulator/rectifier (2).
![](https://motoinstruction.ru/img/suzuki/14/120835.jpg)
Measure the voltage between the terminals using the multi circuit tester as indicated in the table below. If the voltage is not within the specified value, replace the regulator/rectifier with a new one.
![](https://motoinstruction.ru/img/suzuki/14/120836.jpg)
- 09900-25008: Multi circuit tester set
- Tester knob indication: Diode test
![](https://motoinstruction.ru/img/suzuki/14/120837.jpg)
* 1.4 V and more (tester's battery voltage)
Note: If the tester reads 1.4 V and below when the tester probes are not connected, replace its battery.