Question about 2002 Yamaha TT-R 225

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What is cdi ignition and where is it located - 2002 Yamaha TT-R 225

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CDI stands for "Capacitor Discharge Ignition" It is a solid state system that replaces the old points ignition system. It consists of a control unit, (usually an alloy box under one of the side covers or seat,) and the pick-up or sensor on the end of the crank or camshaft....

Posted on Jul 19, 2009

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How do I know what wire feeds from the ignition switch to the cdi as none of the colour match at both ends


with the ignition off ,use a multimeter set on continuity ( ohms)
place one lead on a wire at the ignition switch and the other end on a wire at the cdi when you have a circuit mark that wire and so on till you have identified all the wires
then turn on the ignition switch ans set the multimeter to volts dc and check which of those wires now has a voltage reading

Jul 18, 2016 | Power Motorcycles

1 Answer

Hi I have a zy50 Chinese pulse moped it has compression and turns over just no spark can you help me fix problem


Check fuse near battery if ok then maybe you have a failed ignition coil or cdi box
box.

Cdi box located near battery

Jan 24, 2015 | Cars & Trucks

1 Answer

What is the CDI for / what is the function?


The CDI is your ignition. It stands for Capacitor Discharge Ignition. If it keeps going out then you have either a poor connection or a bad CDI box.

Dec 01, 2013 | Motorcycles

1 Answer

Cdi location 260cc scooter


cdi boxes can be tricky here a few key spots by the battery up front by the ignition it front of the motor or on either side of the frame near the gas tank , they make them different upon models .

Jul 13, 2011 | 2011 Xingyue Xy150T6

1 Answer

Where do you find the spark plug and CDI on a 50cc Chongqing Bashan scooter? And how do you replace the sparkplug and CDI?


The spark plug is located on the cylinder head of the engine. Look for a really thick wire from the ignition coil. The plug is on the other end. Your plug, if a four stroke engine, is a CR7HSA, which takes a 5/8 deep well socket to remove. The CDI is a black box, sometimes in the battery box, most often under the seat bucket after its removed.

Nov 23, 2009 | RTO Gas Motor Scooter

1 Answer

Replaced CDI cuts bike out when slightly moved or touched.


try to check your ignition coil.or your ignition switch might be grounded.

Oct 26, 2009 | 1995 Honda VFR 400 R NC30

1 Answer

No spark on Hyusu


Hi and welcome to FixYa,

For a "no spark" problem with a Hyosung RX125, check:
  • temporarily disconnect the battery. With the engine on at both the ignition switch and engine kill switch, verify that the green wire to the CDI does not measure 0 ohms to ground;
  • if it does, check the ignition switch and the engine kill switch;
  • it it measures anywhere between 50 ~ 500 ohms, then reconnect the battery and check that there is +12 on the orange wire going to the CDI with ignition switch on;
  • for a pulsating voltage (high ACV) at the white / blue wire coming from the CDI going to the ignition coil;
  • for a pulsating voltage (low ACV, 0.5VAC) at the green wire coming from the pulser coil going to the CDI; and
  • of course, check if the CDI (black / white) is connected to the ground.
Postback results of tests.

Good luck and thank you for using FixYa.

May 27, 2009 | 2001 Hyosung RX 125

1 Answer

No ignition changed cdi unit. still no ignition. any ideas? wayne


Hi and welcome to FixYa,

As in most bikes, the CDI is dependent on the other parts of the ignition system. Check the connection / status of the other parts:
  • terminal of the ignition coil - should have a pulsating high AC voltage from the CDI. Tested alone, the ignition coil should have 0.1 ~ 0.3 ohms from terminal to ground and 3 ~ 5 kilo ohms high voltage to ground;
  • pulser coil - should have very low pulsating AC voltage fed to the CDI. Depending on the brand would be 50 ~ 500 ohms;
  • IGN + 12 - supplied to the CDI through the Engine Stop Switch;
  • ground - ground.

Postback results of checks.

Good luck and thank you for using FixYa.

May 15, 2009 | 2003 Sachs Roadster 125 V2

1 Answer

Is a 2 stroke motorcycle engine have an alternetor?


yes all motorcycles have an alt. its on the left side case its in the engine and what you have to do is remove the cover which may have around 6 - 8 bolts on it. cdi is not an alternator it stands for capacitor discharge ignition and it is an ignition unit . BTW which make amd model is ur motorcycle. the locations may change on some models.

Feb 17, 2009 | 2008 Suzuki GSX-R 600

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