Suzuki TU250X User Manual

4-64 FI SYSTEM DIAGNOSIS
“44” (P0130) HO2 SENSOR (HO2S) CIRCUIT MALFUNCTION

INSPECTION
NOTE:
After repairing the trouble, clear the DTC using SDS tool.
(4-24)
Step 1
1) Turn the ignition switch OFF.
2) Remove the right frame cover. (8-3)
3) Check the HO2 sensor coupler for loose or poor contacts.
If OK, then check the HO2 sensor lead wire continuity.
4) Disconnect the HO2 sensor coupler.
5) Check the continuity between Bl/W wire A and ground.
6) Also, check the continuity between Bl/W wire A and B/Br
wire B. If the sound is not heard from the tester, the circuit
condition is OK.
 09900-25008: Multi circuit tester set
 Tester knob indication: Continuity test ()
DETECTED CONDITION POSSIBLE CAUSE
HO2 sensor output voltage is not input to ECM dur-
ing engine operation and running condition.
• HO2 sensor circuit open or short
• ECM malfunction
• HO2 sensor malfunction
ECM
O/W
W B Gr W
HO2
E1
E2
B/Br
Bl/W
B/W
HO2 sensor
Ignition switch
Side-stand
relay
Engine stop
switch
To side-stand
switch
When using the multi circuit tester, do not strongly touch the terminal of the ECM coupler with
a needle-point probe to prevent the terminal damage or terminal bend.
1
1
!

Suzuki TU250X Specifications

General

Displacement	249 cc
Bore x Stroke	72.0 mm x 61.2 mm
Compression Ratio	9.2:1
Ignition	Electronic ignition (transistorized)
Starter	Electric
Transmission	5-speed constant mesh
Final Drive	Chain
Front Suspension	Telescopic, coil spring, oil damped
Rear Suspension	Swingarm type, coil spring, oil damped
Rear Brakes	Drum brake
Front Tire	90/90-18 M/C 51S, tube type
Rear Tire	110/90-18 M/C 61S, tube type
Overall Length	2070 mm (81.5 in.)
Overall Width	750 mm (29.5 in.)
Overall Height	1075 mm (42.3 in.)
Seat Height	770 mm (30.3 in.)
Ground Clearance	165 mm (6.5 in.)
Wheelbase	1375 mm (54.1 in.)
Curb Weight	148 kg (326 lbs.)
Engine Type	4-stroke, single cylinder, SOHC
Front Brakes	Single disc
Fuel Capacity	12 L (3.2 US gal.)