Honda SH300 2009 User Manual

FUEL SYSTEM (PGM-FI)
6-41
3. O2 Sensor Inspection
Replace the O
2 sensor with a known good one
(page 6-76).
Clear the DTC (page 6-13).
Start the engine and warm it up until the coolant
temperature is 80 °C (176 °F).
Test-ride the scooter.
Stop the engine.
Read the DTC (page 6-12) and check that the MIL
blinks.
Is the MIL 21 blinks?
YES – Replace the ECM with a new one and
recheck
NO – Faulty original O
2 sensor
MIL 29 BLINKS (IACV)
• Before starting the inspection, check for loose or
poor contact on the IACV 4P connector and
recheck the MIL blinking.
1. IACV Short Circuit Inspection
Turn the ignition switch OFF.
Disconnect the IACV 4P connector.
Check the connector for loose contacts or cor-
roded terminals.
Check for continuities between the IACV 4P con-
nector of the wire harness side and ground.
Are there continuities?
YES – • Short circuit in Light green or Brown
wire
• Short circuit in Gray/Red or Black/red
wire
NO – GO TO STEP 2.
Connection: Light green – Ground
Brown – Ground
Gray/Red – Ground
Black/Red – Ground
Lg
Br
Bl/R
4P CONNECTOR (Wire side of
female terminals)
Gr/R

Honda SH300 2009 Specifications

General

Displacement	279.1 cc
Bore x Stroke	72 mm x 68.5 mm
Compression Ratio	10.5:1
Fuel System	PGM-FI electronic fuel injection
Front Tire	110/70-16
Rear Tire	130/70-16
Width	730 mm
Height	1, 195 mm
Wheelbase	1, 420 mm
Engine Type	Liquid-cooled, 4-stroke, single-cylinder
Max Torque	26.5 Nm @ 6, 000 rpm
Transmission	V-Matic
Front Suspension	Telescopic fork, 35 mm
Rear Suspension	Twin shock absorbers
Front Brake	256mm hydraulic disc
Rear Brake	240 mm disc