Question about 2003 Harley Davidson XL 1200 C Sportster Custom

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How do i test coil if its defective - 2003 Harley Davidson XL 1200 C Sportster Custom

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Take off leads to spark plugs and measure resistance directly through the leads...im guessing probably 23 to 25k ohms...also pull a wire off the post on the coil and turn the ignition switch on it should should read battery voltage.

Posted on Sep 27, 2009

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WHAT SHOULD THE PRIMARY AND SECONDARY READ WHEN CHECKING TO SEE IF THE COIL IS ANY GOOD?



Testing an Ignition Coil

This testing procedure is valid for most automotive coils. Using an ohmmeter, check the resistance between the side terminals of the coil. Do this with all of the wires to the coil disconnected. You should see 0.75 to 0.81 ohm of resistance. Then check the resistance between either side terminal and the center high tension terminal. The reading should be 10,000 to 11,000 ohms. Any significant deviation from these numbers would indicate that the coil is defective.

May 03, 2015 | Cars & Trucks

1 Answer

Bike has no spark


Check your pick-up sensor located inside the timing cover, behind the adjustor plate. If the filament is not intact you will have no spark.
A defective coil, cam position sensor, or stator will also cause a no spark condition.
Ignition Coil Primary Circuit Test
Remove the coil. THEN set your ohmmeter scale to RX1 and place ohmmeter leads on the primary coil windings A (front of coil) to B (middle of coil), B to C (front of coil) and check for primary coil winding resistance which normal resistance range is 0.5-0.7 ohms. If primary resistance is not within this range check out test results below.

Ignition Coil Secondary Circuit Test
With the ignition coil removed from the motorcycle and the ohmmeter set to the RX1K scale place the ohmmeter leads on the secondary coil windings B (middle terminal) to
R (rear secondary terminal/socket), B to F (front secondary terminal/socket) and check for secondary coil winding resistance which normal resistance range will be 5.5-7.5K ohms. If secondary resistance is not within this range check out test results below.

Test Results
A low resistance value indicates a short in the coil winding which requires coil replacement.

A high resistance value might indicate that there is some corrosion/oxidation of the coil terminals requiring the coil terminals to be cleaned and the resistance test then repeated and if after the test is repeated the resistance is still high after the terminals were cleaned the coil must be replaced.
If there is an infinite ohms or no continuity) resistance value the coil is open and must be replaced.

May 09, 2014 | 2002 Harley Davidson XL Sportster 883

1 Answer

How to change coils on gm 2.4 engine


under coil there is the ignition module . it is the primary circuit to trigger the coil . the coil itself is the secondary circuit . you have to test ignition module first ,,,, remove coil test with led ignition module crank engine see if light is blinking. if yes coil defect ,,,if not module is defect
hope it helps

Mar 22, 2014 | 2000 Pontiac Sunfire

1 Answer

Pilot will lite but burner will not when you go from pilot to on


Hi.

When this happens it usually means that one of the coils is defective. The burner valve is operated by three or two coils. If one of the coils is bad the pilot will lit but the valve won't stay open when the oven is supposed to turn on.

Test the coils reading impedance at their contacts. If a coil is open (shows Ohms infinity at the multimeter reading), then the coil must be replaced.

If the coils are fine test the thermostats (always reading impedance) and replace the coils if thermostats are fine. Check also pressure regulator and ensure that the flame is OK.

Other part that could cause the problem is the flame sensor. The flame sensor is difficult to test and fails really uncommonly. The sensor works in parallel with the coils. The part is tested reading Volts. Flame sensor is usually tested and replaced only when there is no other possible cause for the problem, after testing coils and thermostats and eventually replacing coils.

Regards.

Ginko
I

Jul 20, 2011 | Kitchen Ranges

1 Answer

Dryer does not heat up



Hi.

Start checking if the ignitor is working and if flame is coming on. If igniter is not working, replace the igniter. If there is no flame test the coils contacts using a multimeter set on Ohms. The coils must return continuity between two of their contacts or they are defective and the valve will not be open. Replace defective coils if needed.

Test and replace the thermal fuse.

The part is tested touching the fuse contacts with the probes of a multimeter set on Ohms. If the fuse is good it will read zero. A bad fuse shows Ohms infinity (open).

If fuse is not the culprit, then you will need to reach the thermostats, testing them with the multimeter. apart the thermal fuse there is one thermistor and one thermal cutoff.

When you access the thermostats clean the lint from air ducts. If fuse or thermostat has blown it means that lint or poor ventilation has caused overheating.

Check fuse if problem is not fixed test the thermostats.


Regards.

Ginko

Jun 14, 2011 | Maytag Neptune MDG5500AW Gas Dryer

1 Answer

Evaporator coil freezing, replaced main control


It is possible you have a defective fan motor in the condenser area or evaporator area. Sometimes when they become defective they will run for a while and just warm up and stop while the compressor continues to run. I learned that one on four costly returns to the home. The cost was to me not the customer. Thanks, Sea Breeze

Aug 05, 2009 | GE GSS25SGPSS Side by Side Refrigerator

1 Answer

My kenmore dryer will start and flame will come on. after a few minutes it goes out and after a minute or two lights again. then does this all over again.


HI, there are two or maybe three gas valve coils that may be defective or malfunctioning. you can confirm by testing the resistance with an ohm meter. replace all coils if one is found to be defective.

If the coils test ok, replace the timer/control

Jun 16, 2009 | Dryers

1 Answer

P1370 and p1350 trouble codes


P1370 Ignition Control (IC) Module 4x Reference too many pulses

P1350 Ignition Control System

Ok, these codes are signaling a malfunction within the Ignition control module. it is sending way to many signals to the coil. i recommend testing the coil for damage and irregular resistance. i will explain how to do this below. i would replace the module as well. The control moduel is Located Under hood, center, rear engine area, above valve cover, mounted in base of ignition coil pack

Ignition Coil Test Procedures__

Ignition Coil Resistance

* with the key off and the battery lead to the ignition coil disconnected, use an Ohmmeter to measure the primary and secondary winding resistance of the ignition coil. when checking the resistance across the windings, pay particular attention to the meter reading. if the reading is out of specifications, even if it is only slightly out, the coil or coil assembly should be replaced.
* To check the primary windings, calibrate an ohmmeter on the X1 scale and connect the meter leads to the primary coil terminals to test the winding.

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* An infinite ohmmeter reading indicates an open winding. The winding is shorted if the meter reading is below the specified resistance. Most primary windings have a resistance of 0.5 to 2 ohms, but the exact manufacturer's specifications must be compared to the meter readings.
* To check the secondary winding, calibrate the meter on the X1,000 scale and connect it from the coil's secondary terminal to one of the primary terminals.


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# A meter reading below the specified resistance indicates a shorted secondary winding. An infinite meter reading proves that the winding is open.
# In some coils, the secondary winding is connected from the secondary terminal to the coil frame. When the secondary winding is tested in these coils, the ohmmeter must be connected from the secondary coil terminal to the coil frame or to the ground wire terminal extending from the coil frame. Many secondary windings have 8,000 to 20,000 ohms resistance, but the meter readings must be compared to the manufacturer's specifications. The ohmmeter tests do not indicate such defects as defective insulation around the coil windings, which causes high-voltage leaks.

May 17, 2009 | 1997 Cadillac DeVille

1 Answer

I have a 2002 chrysler town and country AWD van, ny dash error codes are 0351 and 0352 can anyone help or tell me what the codes reffer to ? Thanks Thomas


CODES p0351 AND p0352 refer to ignition coil 1 and ignition coil 2 circuits . possible causes for DTC to set include , intermittent condition , defective ignition coil #1 and / or 2 , defective PCM , or defective connectors or wiring . further testing is required .

Jan 01, 2009 | 2002 Chrysler Town & Country

1 Answer

94 ford escort no fire


Hi there!

You've done the most obvious, and we're still in the process of elimination -
You said -"no fire" so that's completely dead - not even a missfire?

The problem should be at the coil, or 12V side of things.

The coils usually fail at high voltage, - so test OK with a meter, just break down in use as the insulation is defective.
I had a car that was stripped of everything - and it ended up being a defective coil - which is what I suggested in the first place.

Make sure you are getting 12V to the coil with the ignition ON.

If possible test the coil by using the HV output directly to a spark plug (one of the old ones) - then ground the other terminal.
(make sure you have both contacts) You should get a spark when turning ignition on and off.

Any noise from the coil during testing will indicate a fault also.

Check battery condition and clean contacts as a precaution.
Don't shock yourself! - take safety precautions against this.

Jun 14, 2008 | 1994 Ford Escort

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