Suzuki Boulevard M50 User Manual

5-68 FI SYSTEM
“C41” (P0230) FP RELAY CIRCUIT MALFUNCTION
INSPECTION
Step 1
1) Remove the secondary gear case cover. (2-16)
2) Turn the ignition switch OFF.
3) Check the FP relay coupler for loose or poor contacts.
If OK, then check the FP relay.
(Refer to page 6-6 for details.)
Is the FP relay OK?
4)After repairing the trouble, clear the DTC using SDS tool. (5-25)
“C42” (P01650) IG SWITCH CIRCUIT MALFUNCTION
INSPECTION
* Refer to the IGNITION SWITCH INSPECTION for details. (9-36)
DETECTED CONDITION POSSIBLE CAUSE
No voltage is applied to fuel pump although fuel
pump relay is turned ON, or voltage is applied to fuel
pump, although fuel pump relay is turned OFF.
• Fuel pump relay circuit open or short
• Fuel pump relay malfunction
• ECM malfunction
ECM
Side-stand
relay
Engine stop
switch
Fuel pump
relay
Fuel pump
Ignition
switch
M
Y
Y/R
VM
FP Relay
To GP
switch
R/W
O/W
1
YES
• Yellow or O/W wire open or shorted to ground,
or poor e connection
• Y/R or R/W wire open or poor 0 connection
• 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 Replace the FP relay with a new one.
DETECTED CONDITION POSSIBLE CAUSE
Ignition switch signal is not input in the ECM. • Ignition system circuit open or short
• ECM malfunction
ECM coupler (Harness side)
1
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)