Suzuki GSF1250 Service Manual

1A-5 Engine General Information and Diagnosis:
Terminal Alignment of ECM Coupler
B718H11102002
I718H1110004-02
TERMINAL NO. CIRCUIT TERMINAL NO. CIRCUIT
1 STVA signal (STVA, 2A) 31 CKP sensor signal (CKP-)
2 STVA signal (STVA, 1A) 32 Serial data for self-diagnosis
3 EVAP page control valve [E-33 only] 33 Power source for fuel injector (VM)
4 — 34 ECM ground (E1)
5 — 35 ISC signal (ISC, 2A)
6 Serial data for speedometer 36 ISC signal (ISC, 1A)
737—
8 TP sensor signal (TP) 38 Fuel pump relay (FP Relay)
9 IAP sensor signal No.2 (IAP, 2) 39 PAIR control solenoid valve (PAIR)
10 ECT sensor signal (ECT) 40 HO2 sensor heater (HO2, H)
11 Power source for sensors (Vcc) 41 Fuel injector #4 (#4, 1)
12 HO2 sensor signal (HO2S) 42 Fuel injector #3 (#3, 1)
13 Tachometer 43 Fuel injector #2 (#2, 1)
14 CKP sensor signal (CKP+) 44 Fuel injector #1 (#1, 1)
15 Cooling fan relay (FAR) 45 Ignition coil #3
16 Power source for back-up 46 Ignition coil #2
17 Power source 47 Ignition coil #1
18 STVA signal (STVA, 2B) 48 ISC signal (ISC, 2B)
19 STVA signal (STVA, 1B) 49 ISC signal (ISC, 1B)
20 STP sensor (STP) 50 —
21 Ignition switch signal 51 —
22 TO sensor signal (TOS) 52 —
23 GP sensor signal (GP) 53 Neutral switch
24 54 Starter relay
25 55 Clutch position switch
26 IAP sensor signal No.1 (IAP, 1) 56 —
27 IAT sensor signal (IAT) 57 —
28 58 Ground
29 Sensors ground (E2) 59 Ground for ignition system
30 Mode select switch 60 Ignition coil #4

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