Suzuki TU250X User Manual

4-30 FI SYSTEM DIAGNOSIS
5) If OK, then check the continuity between each terminal and
ground.
 CKP sensor continuity: ∞ Ω (Infinity)
(Bl – Ground)
(G – Ground)
 09900-25008: Multi circuit tester set
 Tester knob indication: Resistance (Ω)
Are the resistance and continuity OK?
Step 2
1) Crank the engine a few seconds with the starter motor, and
measure the CKP sensor peak voltage at the CKP sensor
coupler.
2) Repeat the above test procedure a few times and measure
the highest peak voltage.
 CKP sensor peak voltage: 2.0 V and more (+ G – - Bl)
1 Peak volt adaptor
 09900-25008: Multi circuit tester set
 Tester knob indication: Voltage ()
.
Is the voltage OK?
YES Go to Step 2.
NO Replace the CKP sensor with a new one.
YES
• Bl/R or B/Br wire open or shorted to ground.
• Loose or poor contacts on the CKP sensor cou-
pler or ECM coupler (terminal B or T).
• If wire and connection are OK, intermittent trou-
ble or faulty ECM.
• Recheck each terminal and wire harness for
open circuit and poor connection.
• Replace the ECM with a known good one, and
inspect it again.
NO
• Inspect that metal particles or foreign material
stuck on the CKP sensor and rotor tip.
• If there are no metal particles and foreign mate-
rial, then replace the CKP sensor with a new
one.
1
2
ECM coupler (Harness side)
2

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.)