Electric Starter Troubleshooting - Honda CRF450X 2005 Service Manual

ELECTRIC STARTER
TROUBLESHOOTING
19-4
Starter motor does not turn
1. Fu se Inspection
Check for blown fuse (15 Al.
Is th e fuse blown?
YES - Replace the fuse.
NO - GO TO STEP 2.
2. Batte ry Inspection
Make sure the battery is fully charged and in good condition.
Is the baHery in good condition?
YES - GO TO STEP 3.
NO - Charge or replace the battery (page 17-6),
3. Starter Relay Switch Operation
Check the starter relay switch operation.
You shou ld hear the relay " CLlCK~ when the starter switch is depressed and pull the clutch lever.
Is th ere
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.
Does the starter motor tum?
YES - . Poorly connected starter motor cable
• Faulty starter relay switch
NO - Faulty starter motor.
5, Relay Coil Ground Line Inspection
Disconnect the starter relay switch connector, then check for continuity between the green w ire ter-
minal of the wire harness side and body ground.
Is there continuity?
NO _ . Open circuit in wire harness
• Loose or poor contact connector
YES - GO TO STEP 6,
6, Starter Relay Switch Input Line In spection
Connect the starter relay switch connector,
Pull the clutch lever and engine starter switch is pushed, measure the voltage at the starter relay
switch 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
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