Suzuki Boulevard M50 User Manual

9-24 ELECTRICAL SYSTEM
• Shift the transmission into the neutral and turn ignition switch
“ON”.
• Crank the engine a few seconds with the starter motor by
depressing starter button and check the CKP sensor peak
voltage.
• Repeat the above test procedure a few times and measure
the highest peak voltage.
 Tester knob indication: Voltage ()
 CKP sensor peak voltage: 4.0 V and more
(Green/Yellow – Brown)
If the peak voltage is lower than the standard range, check the
peak voltage at the CKP sensor lead wire coupler.
• Remove the secondary gear case cover. (8-40)
• Remove the tool box. (8-41)
• Disconnect the CKP sensor lead wire coupler 2 and connect
the multi circuit tester with the peak volt adaptor.
Blue (+ Probe) – Green (- Probe)
• Measure the CKP sensor peak voltage at the CKP sensor
lead wire coupler.
 Tester knob indication: Voltage ()
 CKP sensor peak voltage: 4.0 V and more (Green – Bl)
If the peak voltage is lower than the standard range, check each
coupler at both ends of the circuit or replace the CKP sensor
and inspect it again.
CKP SENSOR RESISTANCE
• Measure the resistance between the lead wires and ground. If
the resistance is not as specified, the CKP sensor must be
replaced.
 09900-25008: Multi circuit tester set
 Tester knob indication: Resistance (Ω)
 CKP sensor resistance: 184 – 276 Ω (Green – Blue)
∞ Ω (Green – Ground)
CKP sensor
CKP sensor
coupler
G/W
W
ECM
coupler
Peak
volt
adaptor
G/Y
Br
CKP sensor
Peak
volt
adaptor
CKP sensor
coupler
G
Bl
G
Bl
CKP sensor
CKP sensor
coupler
SAMPLE

Suzuki Boulevard M50 Specifications

General

Compression Ratio	9.4:1
Fuel System	Fuel injection
Ignition	Electronic ignition (transistorized)
Transmission	5-speed constant mesh
Final Drive	Shaft drive
Front Suspension	Inverted telescopic, coil spring, oil damped
Front Tire	130/90-16M/C 67H, tubeless
Rear Tire	170/80-15M/C 77H, tubeless
Ground Clearance	140 mm (5.5 in)
Seat Height	700 mm (27.6 in)
Engine Type	4-stroke, liquid-cooled, V-twin
Bore x Stroke	83.0 mm x 74.4 mm
Rear Suspension	coil spring, oil damped
Front Brakes	Single hydraulic disc
Rear Brakes	Drum
Fuel Tank Capacity	15.5 L (4.1 US gal)
Wheelbase	1, 655 mm (65.2 in)