P0351 – P0362 Ignition Coil A-L Primary , Secondary Circuit Malfunction
Each ignition coil is built with two bobbins of wire. The primary coil has fewer windings than the secondary coil. The primary coil induces an electrical field into the secondary coil. When the primary current is shut off, the electrical field collapses. Because the secondary has so many more windings, it converts the electrical field into very high voltage. That voltage travels down the ignition wire and jumps the spark plug gap, igniting the air fuel mixture. These trouble codes indicate a problem with either the primary or secondary circuits. Coil A is the coil for #1 spark plug.
For more information on this repair or any others for your vehicle, buy an online subscription to either Alldatadiy.com or eautorepair.net. Click on this link to compare the two services: Compare Alldata and Eautorepair.
If you just need information for a single repair and want to save money,eautorepair offers a lower price 1-week subscription for only $11.99. Or, if you’ll be working on this vehicle in the future, you can buy a 1-year subscription (Alldatadiy.com for $26.99, or eautorepair.net $29.99)
© 2012 Rick Muscoplat
Alldatadiy.com
eautorepair.net
Alldata and Eautorepair are both professional grade shop manuals. You’ll find more in-depth information and more complete wiring diagrams, along with descriptions of how the systems work. And, you’ll get all that at a price you can afford. Check them out!
Click HERE to read AUTO REPAIR ARTICLES sorted by topic
Click HERE to read some cool DIAGNOSTIC TIPS
Click HERE to read ACURA articles
Click HERE to read AUDI articles
Click HERE to read BMW articles
Click HERE to read CHRYSLER articles
Click HERE to read DODGE articles
Click HERE to read FORD LINCOLN MERCURY articles
Click HERE to read GM articles
Click HERE to read HONDA articles
Click HERE to read HYUNDAI articles
Click HERE to read INFINITI articles
Click HERE to read JEEP articles
Click HERE to read KIA articles
Click HERE to read MITSUBISHI articles
Click HERE to read NISSAN articles
Click HERE to read SUBURU articles
Click HERE to read TOYOTA articles
Click HERE to read VOLKSWAGEN articles
in changing spark plugs in my 04 Jeep Grand 4.7l v8(check engine light said miss fire cyl.6) i found cyl. 6 had a bad coil. now engine light says ignition coil f primary/secondary circuit. i take it from your posts that f=cyl.6? but what supplies the power or where is the bad part? my ECU? please help.. thanku
The ECU only switches ground on and off. Power is supplied through another circuit. You’ll have to get a wiring diagram to track that down.