Suzuki GSF1250 Service Manual

Engine General Information and Diagnosis: 1A-102
DTC “C42” (P1650): IG Switch Circuit Malfunction
B718H11104024
Detected Condition and Possible Cause
Troubleshooting
NOTE
• Refer to “Ignition Switch Inspection in Section 9C (Page 9C-10)” for details.
• After repairing the trouble, clear the DTC using SDS tool. Refer to “Use of SDS Diagnosis Reset
Procedures (Page 1A-13)”.
DTC “C44” (P0130/P0135): HO2 Sensor (HO2S) Circuit Malfunction
B718H11104025
Detected Condition and Possible Cause
Wiring Diagram
ECM coupler (Harness side)
Detected Condition Possible Cause
Ignition switch signal is not input in the ECM. • Ignition system circuit open or short.
• ECM malfunction.
Detected Condition Possible Cause
C44/P0130
HO2 sensor output voltage is not input to
ECM during engine operation and running
condition.
Sensor voltage > 1.0 V
• HO2 sensor circuit open or short.
• ECM malfunction.
C44/P0135
The heater can not operate so that heater
operation voltage is not supplied to the
oxygen heater circuit.
• HO2 sensor lead wire/coupler connection.
• Battery voltage supply to the HO2 sensor
ECM
Side-stand
relay
Ignition
switch
Engine stop
switch
O/W
W
Gr
B
W
HO2 sensor
HO2
HO2.H
E2
To Side-
stand switch
B/Br
W/G
W/B
29
12
40
I718H1110114-03
I718H1110240-01

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