Coil fill Circuit Descriptions kind 1

I"ve labeled each wire of the coil fill connector (in the photos) and below you"ll find the circuit descriptions because that each number:

Number 1: convert signal circuit for cylinders 3 and 4.

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Number 2: switching signal circuit because that cylinders 2 and also 6.Number 3: convert signal circuit for cylinders 1 and 5.Number 4: strength Circuit (12 V) for all of the ignition coils within the coil pack.

Coil fill Circuit Descriptions kind 2

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I"ve labeled each wire of the coil load connector (in the photos) and below you"ll find the circuit descriptions because that each number:

Number 1: convert signal circuit for cylinders 3 and 4.Number 2: switching signal circuit because that cylinders 2 and 6.Number 3: convert signal circuit because that cylinders 1 and also 5.Number 4: strength Circuit (12 V) for all of the ignition coils within the coil pack.

Why go The Ford Coil Pack have 4 Wires?

The crucial to successfully troubleshooting the coil fill is to understand that 3 separation, personal, instance ignition coils consist of the Ford coil pack. Every of those three ignition coils has two towers that supply spark to 2 cylinders at the same time (I"ll be referring to this as: paired cylinders).

like in a traditional ignition system, each ignition coil (in the Ford coil pack) requirements a power resource and a convert signal come fire turn off a spark (if you desire to review a inside wall on ignition coils, click here: Automotive Diagnostic Tips and Techniques: The Ignition Coil).

Therefore, 3 of the 4 wires administer the convert signal to every individual ignition coil in ~ the Ford coil load (you"ll learn more about what this convert signal is below). The fourth wire gives the juice to every one of the ignition coils. Below you"ll discover the Circuit descriptions v photos the will aid you to test and also diagnose the Ford coil pack.

The beauty beauty of the Ford coil pack form ignition system (on V-6 engine fitted vehicles) lives in the fact that they all usage the very same circuits no issue what the make (Ford or Mercury) or design or form of coil load (early or late design) used! The photos the you"ll find here and also the circuit descriptions in them apply to any Ford (or Mercury) coil load that is the same.

How The Ford Coil pack Works ~ above V6 Cars and also Trucks

Here"s a very simplified explanation the what that takes to do the Ford coil pack work. Once you revolve the crucial to crank and also start the engine:

Juice (12 Volts) operation from a fuse to a PCM relay.From this relay, this 12 Volts walk to the strength circuit that the coil load connector.The coil pack consequently delivers 12 Volts to every one of the ignition coils in ~ it.As the engines starts to crank, the fuel injection computer receives a crankshaft position signal from the crankshaft place sensor.The PCM currently starts to "switch" the ground circuit of every individual ignition coil (within the coil pack) on and off (hence the name switching signal that you"re gonna" see thru" the end this article).It"s this switching on and off that renders each ignition coil fire turn off spark.

This spark is ceded to two cylinders in ~ the exact same time. How? Well, this is feasible since every ignition coil (within the Ford coil pack) has actually two towers rather of one. Therefore, the spark produced jumps out of both simultaneously.

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So then, as soon as the ignition coil (within the coil pack) that feeds cylinders 1 and 5 fires off a spark, the spark plugs because that cylinders 1 and also 5 spark at the specific same time. And so it goes because that the cylinders 2 and 6 and cylinders 3 and 4.