How to check the ignition coil? - Husqvarna , No.455 Rancher, 20" Gas - Powered Chainsaw

Disconnect the ignition coil output wire at the distributor cap.
Connect a spark plug to the end of the ignition coil output wire which you just disconnected.
Connect a ground wire to the threaded portion of the spark plug.
Disconnect the ignition coil ground wire from the negative terminal on the coil (Green Wire).
Connect one end of a ground wire to the ignition coil negative terminal.
Turn the ignition switch to the ON position.
Tap the other end of the ignition coil ground wire jumper on an good grounding point (for example the battery negative terminal) and look for sparks at the spark plug that correspond to the frequency of your tapping of the ground wire.
If you have a good spark at the spark plug, the ignition coil is good.
If you don't get a good spark, check for approximately 12 VDC from the coil positive terminal (black wire) to ground with the ignition switch in the ON position. You should also get approximately 12 VDC from the coil negative terminal (Green wire) to ground
Ignition Coil Resistance Check

In addition to the test above, you may elect to perform an ignition coil resistance check as confirmation of the coil's condition.

Check the ignition coil primary coil resistance by connecting an ohmmeter between the positive (Black wire) and negative (Green wire) terminals on the coil. The resistance should be 0.4 to 0.6 ohms.
Check the ignition coil secondary coil resistance by connecting an ohmmeter between the coil output terminal and the ignition coil negative terminal. The resistance should be 5000 to 7200 ohms.

You may have a bad coil or bad ground or wire connection

What make , model an year vehicle ? Is it coil on plug ignition system or dis ignition . Did you test for battery voltage at the coil or coils ? Is the powertrain control module controlling the coils ? Does it have a ignition control module ? Automotive Engine Ignition Coil Testing Repair How to test an ignition coil and ignition module with test light

check ignition coil see if its getting battery power check black and pink ignition wire going to ignition coil.if you not getting power check the 20AMP ignition fuse.if power going to ignition coil, problem could be bad ignition coil or bad ignition module or pcm problems, best have vechicle code scan for pcm fault or crankshaft position sensor or ignition module fault.

check ignition fuse to coil and check see if power getting to coil if yes ignition coil or ignition module faulty.if no power getting to coil and ignition module more likely you have blowed ignition fuse or faulty wiring from ignition fuse box terminal to the ignition coil and module.

1. To check the coil's primary circuit, perform the following:

1. Make sure that the ignition switch is turned OFF .
2. Remove the primary wires from the (+) positive and the (-) negative terminals of the coil.
3. Using an ohmmeter, set it to the 1.0 ohm range, then connect the probes to the primary terminals. The resistance should be 0.84-1.02 ohm's; if not, replace the ignition coil.

1. To check the coil's secondary circuit, perform the following:

1. Make sure that the ignition switch is turned OFF .
2. Remove the coil wire from the center terminal of the coil.
3. Using an ohmmeter, set it to the 15,000 ohm range, then connect the one probe to the center terminal and the other to the (-) negative terminal. The resistance should be 8,200-12,400 ohms. If not, replace the ignition coil.

P0354 - Ignition Coil D Primary/Secondary Circuit Malfunction.

Description of DTC:
The ignition signal from the Powertrain Control Module (PCM) or Electronic Control Module(ECM) is sent to and amplified by the power transistor. The power transistor turns ON and OFF the ignition coil primary circuit. This ON/OFF operation induces the proper high voltage in the coil secondary circuit.

Symptoms:
- Lack/Loss of Power
- The engine may be harder to start
- Engine hesitation
- Check Engine Light On
- No spark

Possible Causes:
- Open or short in the ignition coil circuit
- Ignition coil circuit shorted to ground
- Ignition coil connector
- Damaged ignition coil
- Damaged PCM or ECM

Possible Solutions:
- If damage, repair ignition coil circuit
- Replace ignition coil
- Replace PCM or ECM


P0355 - Ignition Coil E Primary/Secondary Circuit Malfunction.

P0356 - Ignition Coil F Primary/Secondary Circuit Malfunction.

p0351 is ignition coil primary circuit this USUALLY means a bad ignition coil use only a name brand coil ,but it could be a bad computer but not very common

Hi there
First you have to measure the resistence between the lead wire and iron core on the ignition coil . To find the ignition coil just follow the spark plug wire . Depending on the model you have the ignition coil is usually 2 bolts holding it on place . Check with the manufacture what is the resistence (ohm) you should have on the coil and if you have the correct resistence readjust the ignition coil with the flywheel . To readjust the coil get a piece of paper and put it between the ignition coil and flywheel , tight the 2 bolts and remove the paper . if still no spark you have to replace the ignition coil .
Hope this help

If theres no spark from the spark plugs then you would have to replace them?