How To Test A Honda Cdi Box

If it runs at all the cdi and the stator are good as well as the coil. The current is sent by a wire to the CDI box Black box mounted on frame under gas tank.

5 Pin Cdi Wiring Diagram Mediapickle Diagram Electrical Diagram Wire

Discussion Starter 4 Jul 11 2011.

How to test a honda cdi box. Ensure that you test the side that comes from the stator rather than the side heading to the CDI box. Since theres no way to test the CDI rule out all those other components before buying a CDI. Here in this video you would learn how to test a bike or motorcycle cdi unit using a multi meter.

I guess Ill purchase a new CDI unit from Jacks. Coming out of the stator pack. Check simple things like the spark plug boot and wire connection as well as all external connections and grounds.

Check the service manual for the schematic on your ignition system. Your multimeter should be set at 2k ohms resistance. Ok so i went back out and started testing things.

When the fuel pump has a problem spark plugs or coil packs are faulty you would observe similar symptoms. To test your bikes CDI box with multimeters first you need to find a connector under the seat of your motorcycle. The connector comes directly from the stator and goes straight to the ignition box or CDI box of your motorbike.

CDI unists are very common now a days on motorcyle. Because of this we recommend that you rule everything else out before replacing the CDI box. I have my multi meter set to 200k and it reads 03.

Take care of your CDI. If the spade connectors are loose chances are the CDI is fried. The reason is that there is no particular way of testing the condition of the CDI.

The ignition coil and the stator can be ohmed out to check them its in the service manual check my link in my signature below if you need the manual. If youre getting power to the box and have a good ground its more than likely a bad cdi box. Or you can use the test wheel and check out the fuel system and CDI inputs and outputs when its failed.

Now check from the spark plug wire to one of the coil terminals. Sometimes a bad CDI does not cause sparks at all. Blue wire to black wire 320-380 ohms.

In addition to dischargin those capacitors the box may also influence your rev limit timing advance and other variables related to spark but thats it. Joined Jul 8 2011. The pulse generator mounted in the rocker cover under the cover marked CDI tells the CDI box when the spark is.

With a multi meter check the wires coming out of your motor and also remove the cover and check for moisture andor corrosion. We have a Bread Board an Oscilloscope and a Milliohm-meter a very expensive extremely sensative OHM meter. Could be a pulsercould be the CDI or it could still be a fuel issue or a wire connection.

This is a connector that comes with a white and blue wire. 13 Apr 8 2011. Under the seat of your motorcycle you will find a connector with a blue and white wire coming straight from the stator and going to the CDI box.

Again when a CDI box is about to go bad it can lead to misfires issues with starting rough running or even stall the motor. I got all these figures from the experts on here. I tested the resistance on some wires.

I usually take a old school test light and check the output of the stator while cranking the follow that voltage through the system pulse generator input and output. The blueyellow and the green wires when tested with the side of the motorframe and eachother test with resistance like they are connected. Therefore the only way you can tell whether your CDI has a problem is by confirming that everything else is in the right condition.

Red multimeter probe in black CDI socket. Joined Oct 21 2009. 4 Apr 2 2012.

The cdis main function is to control the point at which the spark is delivered to your spark plug the cdi basically took the place of the old points systems. There are so many factors that can cause a CDI box to go out which is why its the only product that we sell without a warranty. It will show you which wirewires run into it hot check them with your meter.

Use an ohmmeter to measure the electrical resistance of the CDI box in a quantifiable way. Check the stator pulse generator and ignition coil. A CDI unit is an electrical part so you cant return it if you find the CDI isnt the problem.

The only real way to test your CDI box is to swap it out with another known good unit from the same yearmakemodel. The CDI is not easy to diagnose because the observable symptoms of a faulty CDI box can lead to different directions. Youll also need to check the green wirethis is your ground.

With the coil disconnected connect a voltmeter to the two coil wires. Different vehicles have specified electrical resistance within the coil. Alternator RED-WHITE 151-187 ohm.

The CDI box stores the current until the spark is needed. You should have one more black box up there. I checked it out and ordered a cdi box i installed the cdi box and tried to start it and it fired right up and i let it run a sec and shut it off it run perfect i headed down the road for a test drive it started smoking from under the handle bars front fender area and like 5 seconds later if quit andback to square one i had no fire again.

Check the resistance between the two coil terminals. Done some searching on line and apparantly its a replacement spark unit there are 2 of them fitted to cx bikes with transistor ignition so the answer is no it wont fit the earlier bikes 500AB with cdi ignition. Check the Resistance Specifications.

The one in the picture looks like the fan control unit. Testing Honda Coils and CDI boxes - YouTube. The ground was clean and tight.

The CDI you cant really test other than checking it has input and output. Not with a regular OHM meter. I have to go to Honda for some miscelaneous odds and ends like fuel line and a front.

If the coils correct resistance levels fail to meet these. We test with the Milliohm-meter and fire the CDI on a full IGN on the Breadboard. Does your C85 have the CDI with a movable timer in it or does it have a movable trigger assy under the.

It should be around 3 ohms. You can put a box on it for 350 dollars or so. The trigger tells the box to fire the box determines when to fire which coil with the capacitors and zap goes the spark plug ad infinitum.

I think the simple answer is that without the test rig that the factory uses you cant test the CDI unit and even with that you would not find intermittent faults so you will have to test the things connected to it pulse generators wiring and connectors starter switch coils fuel pump kill switch and the ground. If you want a replacement for the earlier cdi unit your best bet is to go for an Ignitech unit. How do you test the CDI box.

Black probe to end of spark plug wire or to the output screw in the CDI.

Chinese Gy6 Wiring Diagram Schema Wiring Diagram Gy6 Cdi Wiring Diagram Wiring Diagram In 2021 Diagram Wire 150cc

Hero Honda Wiring Diagram Http Bookingritzcarlton Info Hero Honda Wiring Diagram Electrical Wiring Electrical Wiring Diagram Motorcycle Wiring

Cdi Box Unit Wiring Connections Capacitor Discharge Ignition System Honda Cd 70 2020 Youtube

Motorcycle Diagram Page 2 Of 37 Wiringg Net Diagram Circuit Diagram Motorcycle Wiring

Gonochnye Peremennogo Toka 6 Pin 2 4 Vilka Cdi Korobka Dlya Cg 125cc 150cc 200cc 250cc Vertikalnyj Dvigatel Ebay Motorcycle Wiring 150cc Automobile Engineering