Suzuki GW250 User Manual

4-58 FI SYSTEM DIAGNOSIS
4) Check for proper terminal connection to the injector coupler.
5) If connections are OK, turn the ignition switch ON.
6) Measure the voltage between O/Bl wire and ground.
NOTE:
Voltage can be detected only for 3 seconds after ignition switch
is turned ON.
 09900-25008: Multi circuit tester set
 Tester knob indication: Voltage ()
 Injector power supply voltage:
Battery voltage
(+ terminal: O/Bl – - terminal: Ground)
Is check result OK?
Step 2
Injector drive circuit check
1) Turn the ignition switch OFF.
2) Disconnect the ECM couplers 1.
3) Check for proper terminal connection to the ECM couplers.
4) If connections are OK, check the following points.
• Resistance
 09900-25008: Multi circuit tester set
09900-25009: Needle-point probe set
 Tester knob indication: Resistance ()
– Between Bl/Y (#1) or Bl/G (#2) wire of injector coupler and
ECM coupler: less than 1 
– Between Bl/Y (#1) wire or Bl/G (#2) wire and ground: infin-
ity
YES Go to Step 2.
NO Repair or replace the O/Bl wire.
1
2
2
(#2)(#2)
(#1)(#1)
2

Suzuki GW250 Specifications

General

Engine Type	4-stroke, 2-cylinder, liquid-cooled, SOHC
Displacement	248 cc
Bore x Stroke	53.5 mm x 55.2 mm
Compression Ratio	11.5:1
Fuel System	Fuel injection
Ignition	Electronic ignition (Transistorized)
Starter	Electric
Transmission	6-speed constant mesh
Final Drive	Chain
Front Suspension	Telescopic, coil spring, oil damped
Rear Suspension	Swingarm type, coil spring, oil damped
Front Tire	110/80-17M/C 57H, tubeless
Rear Tire	140/70-17M/C 66H, tubeless
Curb Mass	183 kg (403 lbs)
Front Brakes	Single disc
Rear Brakes	Single disc
Fuel Tank Capacity	13.3 liters
Overall Width	760 mm
Overall Height	1, 075 mm
Wheelbase	1, 430 mm
Ground Clearance	165 mm (6.5 in)
Seat Height	780 mm (30.7 in)
Overall Length	2, 145mm (84.4 inches)