Suzuki GSF650 Service Manual

Engine General Information and Diagnosis: 1A-104
DTC “C42” (P1650): IG Switch Circuit Malfunction
B817H21104025
Detected Condition and Possible Cause
Troubleshooting
NOTE
• Refer to “Ignition Switch Inspection in Section 9C (Page 9C-11)” for details.
• After repairing the trouble, clear the DTC using SDS tool. Refer to “Use of SDS Diagnosis Reset
Procedures (Page 1A-15)”.
DTC “C44” (P0130/P0135): HO2 Sensor (HO2S) Circuit Malfunction
B817H21104026
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
HO2 sensor output voltage is not input to ECM during
engine operation and running condition.
Sensor voltage > 1.0 V
The heater can not operate so that heater operation
voltage is not supplied to the oxygen heater circuit.
• HO2 sensor circuit open or short.
• ECM malfunction.
• 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
I718H1110114-04
I718H1110240-01

Suzuki GSF650 Specifications

General

Displacement	656 cc
Bore x Stroke	65.5 mm x 48.7 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	Link type, coil spring, oil damped
Front Tire	120/70ZR17M/C (58W), tubeless
Rear Tire	160/60ZR17M/C (69W), tubeless
Overall Length	2, 130 mm
Rear Brakes	Disc brake
Fuel Tank Capacity	19.0 L
Wheelbase	1, 470 mm
Seat Height	790 mm
Ground Clearance	135 mm
Engine Type	4-stroke, liquid-cooled, DOHC, 4-cylinder