Suzuki Wagon R Manual page 1344

B : Generator output (Battery terminal)
E : Ground
L : Lamp terminal
FAULTY INDICATOR LAMP OPERATION
PROBLEM
Charge light does not
light with ignition ON
and engine off
Charge light does not go out with
engine running (battery requires
frequent recharging)
Noise from radio
DIAGNOSIS
CAUTION:
D Do not connect any load between L and E.
D When connecting a charger or a booster battery to vehicle
battery, refer to this section describing battery charging.
Trouble in charging system will show up as one or more of the fol-
lowing conditions:
1) Faulty indicator lamp operation.
2) An undercharged battery as evidenced by slow cranking or indi-
cator dark.
3) An overcharged battery as evidenced by excessive spewing of
electrolyte from vents.
Noise from generator may be caused by a loose drive pulley, loose
mounting bolts, worn or dirty bearings, defective diode, or defective
stator.
POSSIBLE CAUSE
D Fuse blown
D Light burned out
D Wiring connection loose
D IC regulator
D Drive belt loose or worn
D IC regulator or generator faulty
D Wiring faulty
Condenser faulty
CHARGING SYSTEM 6H-3
CORRECTION
Check fuse.
Replace light.
Tighten loose connection.
Replace generator.
Adjust or replace drive belt.
Replace generator.
Repair wiring.
Replace generator.