Suzuki GSF1250 Service Manual

4E-65 ABS:
DTC “48” (C1648): Supply Voltage (Decreased)
B718H14504016
Wiring Diagram
Refer to “ABS Unit Diagram (Page 4E-8)”.
Troubleshooting
Possible Cause
• Faulty generator or regulator/rectifier
• Faulty ABS control unit
• Faulty wire harness, etc.
Step Action Yes No
1 1) Remove the seat. Refer to “Exterior Parts Removal and
Installation in Section 9D (Page 9D-6)”.
2) Measure the voltage between the (+) and (–) battery
terminals using the multi-circuit tester.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
Tester knob indication
Voltage ( )
Battery voltage
12.0 V and more
Is the voltage over 12 V?
Go to Step 2. Charge or replace the
battery.
2 1) Start the engine at 5 000 r/min with the dimmer switch
set to HI.
2) Measure the voltage between the (+) and (–) battery
terminals.
Special tool
: 09900–25008 (Multi-circuit tester set)
Tester knob indication
Voltage ( )
Regulated voltage
14.0 – 15.5 V at 5 000 r/min
Is the voltage 14.0 – 15.5 V?
Go to Step 3. Inspect the generator
and regulator/rectifier.
Refer to “Generator
Inspection in Section 1J
(Page 1J-3)” and
“Regulator / Rectifier
Inspection in Section 1J
(Page 1J-8)”.
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I718H1450123-01

Suzuki GSF1250 Specifications

General

Displacement	1255 cc
Bore x Stroke	79.0 mm x 64.0 mm
Compression Ratio	10.5:1
Fuel System	Fuel injection
Transmission	6-speed, constant mesh
Front Suspension	Telescopic, coil spring, oil damped
Rear Suspension	Link type, coil spring, oil damped
Front Brakes	Dual hydraulic disc
Rear Brakes	Single hydraulic disc
Front Tire	120/70ZR17M/C (58W), tubeless
Rear Tire	180/55ZR17M/C (73W), tubeless
Overall Length	2130 mm
Overall Width	790 mm
Seat Height	805 mm
Wheelbase	1485 mm
Fuel Tank Capacity	19.0 L
Starter	Electric
Final Drive	Chain
Ignition	Electronic ignition (transistorized)
Engine Type	4-stroke, liquid-cooled, DOHC
Ground Clearance	135 mm