Honda CRF450X 2008 Service Manual

ELECTRIC STARTER
TROUBLESHOOTING
19-4
Starter motor does not turn
1. Fu se In spection
Check for blown fuse (15 Al.
Is the fu se blown ?
YES - Replace the fuse.
NO - GO TO STEP 2.
2. Batte ry Insp ec tion
Make su re the battery is fully charged and in good condition.
Is the baHery in good con dition ?
YES - GO TO STEP 3.
NO - Charge or replace the battery (page 17-6),
3. Starter Rel ay Switch Operation
Check the starter relay switch operation.
You should hear the relay " CLlCK ~ when the starter switch is depressed and pull the cl ut ch lever.
Is there 8 "CUCK "l
YES - GO TO STEP 4.
NO - GO TO STEP 5.
4. Starter Motor In spection
Apply battery voltage directly to the starter motor and check the operation .
D oes the starter motor tum ?
YES - . Poorly connected starter motor cable
• Faulty starter relay switch
NO - Faulty starter moto r.
5,
Relay Coil Ground Line Inspection
Disconnect the starter relay switch connector, then check for continuity between the green wire ter -
minal of the wire harness side and body ground .
Is there continuit y?
NO _ . Open circuit in wire harness
• Loose or poor contact connector
YES - GO TO STE P 6,
6,
Starter Relay Switch Input Line Inspec tion
Connect the starter relay switch connector,
Pull the clutch lever and engine starter switch is pushed, measure the voltage at the starter relay
sw itch connector (between Yellow /red (+1 and body ground HI .
Is the input line normal?
YES - GO TO STEP 7.
NO _ . Faulty clutch switch (page 20 ·8)
•
Faulty engine starter switch (page 20·9)
•
Loose or poor contact of the related connector terminal
• Open circuit in the wire harness
•
•

Honda CRF450X 2008 Specifications

General

Engine Type	449cc liquid-cooled single-cylinder four-stroke
Bore and Stroke	96.0mm x 62.1mm
Compression Ratio	12.0:1
Transmission	5-speed
Final Drive	#520 chain; 13T/51T
Front Suspension	47mm inverted Showa cartridge fork with 16-position rebound and 16-position compression damping adjustability; 12.4 inches travel
Front Brake	Single 240mm disc with twin-piston caliper
Rear Brake	Single 240mm disc
Front Tire	80/100-21
Rear Tire	110/100-18
Wheelbase	58.3 inches
Seat Height	37.6 inches
Fuel Capacity	1.9 gallons
Induction	Keihin 40mm carburetor
Ignition	CD with electronic advance
Rear Suspension	Pro-Link Showa single shock with spring preload, 17-position rebound damping adjustability, and compression damping adjustment; 12.4 inches travel
Trail	4.6 inches