Question about 2002 KTM 640 LC4

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Ktm 640 adventure electric start not working

Hi, my Ktm 640 Adventure just died in the middle of riding it for 10 minutes, before that it seemed slow to crank when starting with the elec. Switch like there wasn't enough juice but started with the kick ok. When I press the elec switch I don't even get a clicking sound from the relay, but if I connect the 2 relay poles with a spanner I get a spark. Battery shows 11.5 V on the multimeter. Any ideas?

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The solinoid coil seems suspect, as jumping across terminals bypasses coil

Posted on Jul 04, 2010

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Posted on Jan 02, 2017

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2011 KTM 990 Adventure low beam blows and speedometer goes out


Hi, Anonymous if your headlight is not working, only one beam works, keeps burning out, blinking, or is dim the first thing you need to check is the headlight bulb for damaged filaments then check your light circuit fuse, then check your head light bulb socket ground wire for a clean tight connection, that being said the usual suspects are:
1. Faulty ground or power supply wire to headlight bulb socket.
2. Worn down solder contacts or loose fit of the bulb base in the socket due to vibration.
3. Worn, chaffed, or broken wires in the light circuit.
4. Corroded, broken, or loose pins/sockets in wire connectors.
5. Faulty hi/lo beam switch.
6. Faulty ignition switch.
7. Fuse is good but no continuity on both sides.
8. Faulty headlight relay.
9. Faulty wiring between battery positive and headlight bulb socket.
10. Weak charging alternator/generator.
11. Faulty voltage regulator/rectifier ground or overcharging.
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.
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May 31, 2017 | 2011 KTM 990 Adventure

1 Answer

KTM 1190 Adventure does not start and MTC FAILURE is showing in the screen


Hi, Daniel and the usual suspects are:
1. Ignition Switch not in the "ON" position.
2. Engine Run Switch in the "OFF" position.
3. Discharged battery, needs to be 12.5 volts or better and be able to pass a load test if necessary.
4. 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 if necessary.
5. Tip over sensor needs a reset.
6. Faulty ignition switch.
7. Faulty starter button.
8. Faulty kickstand or clutch pull in switch/sensor.
9. Starter control circuit, relay, or solenoid faulty.
10. Main fuse or circuit breaker may be blown or faulty.
11. Check for engine trouble codes.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have nice a day.
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Different colored springs usually indicate that they provide a different pressure resistance.

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Hi stopped to fuel up my Ktm 640 adventure 2000


have you checked your main fuse is the battery fully charged is there spark at the plug are you sure you havent bumped the kill switch without noticeing it

Apr 15, 2010 | 2002 KTM LC4 640 Adventure

1 Answer

My brother is stuck in white sands NM and his '01 ktm Adv R 640 will not start. None of the lights come on. He was riding slow for a while which makes me think that it is over heated. there is no shade...


It's possible that the battery has decided to go further south. A blown fuse is definitely worth looking for. If he was running slow for an extended period of time, the battery could just be discharged for lack of sufficient charging current. Look at the water level in the battery--if very low, it won't produce much current or charge well. A voltmeter or test lamp would be a definite asset in troubleshooting the battery and the cables which may be corroded through. Good luck!

Apr 03, 2010 | 2001 KTM Adventure R 640

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