Capturing Secondary Ignition Waveforms

Michael Technical Support Specialist California Posted   Latest   Edited  

During process of learning how to use my new 4425A, I realized that I need to purchase accessories for capturing secondary Ignition waveforms. 

It seems like the COP paddles (Pico TA398 or Wyze) are a hit/miss due to coil design. I primarily work on late-model Toyota, Honda and Nissan products. Are the HT extension leads (PP400) a more reliable option?

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Zeb Diagnostician
California
Zeb
 

I have a Wyze and AES paddle. Depending on the coil location & design it is hit or miss on captures. Wyze is better for “snaking”, paddle works great on easily accessible coils. HT extension and secondary pick up is going to give a better connection but with extra setups involved if even feasible on some engines. You might as well plan on purchasing a minimum of a paddle & HT setup.

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Jeffrey Mobile Technician
Illinois
Jeffrey
 

Extension leads will get you a more accurate kv reading. The wands are great for relative testing and syncing. I have I think the wyze wand. Sometimes I have to touch the side of the coil due to the ICM causing too much of a gap!

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Glenn Owner/Technician
Texas
Glenn
 

Hi Michael, That set is $200 plus tax and shipping. It would be worth it to purchase an early set of Toyota, Honda or Nissan plug wires with the male cap pins. (Shopping around a salvage yard and you will find a good match for a sample.) Modify them by cutting off the boot on the male end so they will connect/ plug into the coils you are testing. Leave the other end with the female boot alone…

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Ray Diagnostician
Ontario
Ray
 

I use various distributor 2 wire inductive pickup coils on the COPs. In the first capture, the vehicle is a 2011 Corolla and the blue channel is a GM distributor inductive 2 wire pickup coil on a COP. The injector is disconnected, I'm doing a 1500 rpm brake torque and you can see the spark plug burn voltage rising because there is no fuel in the cylinder. The green channel is the IGT The…

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Richard Technician
Virginia
Richard
 

Ray, that is pretty slick !

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Darren Technician
Wisconsin
Darren
 

The short answer…Yes by far, much more reliable.

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Glenn Owner/Technician
Texas
Glenn
 

Hi Michael, Ebay has individual COP test leads for around $20.00 each with free shipping. You might check into that option.

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