Question about Yamaha WR 400 F Motorcycles
Hi, Intergrateav before testing any electrical component in the Starting System it is "IMPERATIVE" that you have a fully charged battery of 12.5 volts or more and be able to pass a proper "LOAD" test if necessary, you may have a preliminary reading of 12.5 volts or more but little or zero amperage, the battery is faulty and must be replaced. AGM type batteries fall into this scenario more so than lead acid batteries.
1. Ignition Switch not in the "ON" position.
2. Engine Run Switch in the "OFF" position.
3. Check the battery terminals for damage or corrosion check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter.
4. Bank angle sensor needs a reset or is faulty.
5. FOB battery low or dead.
6. Faulty ignition switch.
7. Faulty starter button.
8. Faulty kickstand, clutch, neutral safety switch.
9. Security alarm needs a reset.
10. Starter relay, solenoid, starter have failed or circuit wiring faulty.
11. Starter armature or field coils have failed.
12. Main fuse or circuit breaker may be blown or faulty.
13. The electric starter is working but starter clutch has failed.
14. Check for engine trouble codes.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
98 WR400 won kick start HELP
What to Do Check When Dirt Bike Won Start
YAMAHA WR400F Owner Service Manual
OEM parts for Yamaha
Posted on May 31, 2017
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Posted on Jan 02, 2017
it happened to me and it was the light bulb. someone had changed for a super bright blue. make sure there is no non standard electrical equipment on the bike. Also you only get a year to 18months out of a battery for this bike.
Posted on Apr 14, 2010
SOURCE: vulcan 1500 classic 2000 year
Either the pickup coil is bad (triggers the coils) or maybe the ground is bad .
Or maybe they are both bad at the same time.Also check the ignition switch.Remove the ignition switch wiring harness out.Disconnect the wires, then clean them and reconnect and then check voltage to the wires, if all is perfect, then try to start, it will give spark, if still no spark and coils are new and replaced, then its short in ignition switch issue.Check the ignition switch wires, any of the wire is crimped/pinched and got cut in between or got loose from its connection.--------------Or its a bad ground issue.-------
This should help.Thanks.Helpmech.
Posted on Jun 03, 2011
hi, you must do 2 types of readings: using a ohmmeter, in DC mode and 20V range, chek the batterie voltage with the engine running (over 1500 rpm).
Then make another reading with your meter set to AC current , juste before your rectifier
The you'll know !! But my opinion goes to the rectifier.
Posted on Sep 18, 2011
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