Operation and screening coil above plug ignition (4 wire) – Toyota/Lexus



This case review is best for anybody fascinated in the doing work facts of Toyota/Lexus coil above plug ignition program, and the extremely related three-wire styles employed by quite a few other suppliers. We commit a great deal of time with the Pico on this 1, but don’t ignore the other primary checks I explore, such as the spark output, power equilibrium and relocating a suspected negative coil to yet another cylinder.

Motor General performance Diagnostics chapter 22

Indicators
– check out engine light-weight (P0304)
– misfire

Correct
– switch the #4 ignition coil

Exams proven
– how to conduct a cylinder drop examination (power equilibrium examination) to discover a misfiring cylinder
– how to conduct a relative compression examination
– how to conduct a spark output check out on a coil above plug ignition coil
– comprehension three and 4-wire coil circuit style and design and procedure
– comprehension Toyota IGT and IGF circuits and related trouble codes
– how to scope examination a COP coil applying voltage and recent
– analyzing coil recent waveforms and IGT/IGF indicators
– determining distinctions between factory and aftermarket ignition coils

Instruments employed
– scan tool
– incandescent examination light-weight
– Pico 4 channel automotive lab scope
– very low amp probe

Playlist
– (Chapter 22) No Spark Troubleshooting, Ignition Coil & Module Testing

https://www.youtube.com/playlist?listing=PLAFYVCyenqcpihCBcez4sWLv5x2FHNnq-

Relevant videos
– How to examination an ignition coil with a examination light-weight (Nissan C.O.P style and design)

– How to examination for a shorted ignition coil with a scope (Lexus)

– Ford 5.4 shorted coil principal winding and negative computer driver

– How to examination an igniter on a Toyota/Lexus

– Ignition Program Models, Operation and Testing (an SD Premium movie)

For much more info on this matter, I have penned a “field manual” called Motor General performance Diagnostics which is readily available at www.scannerdanner.com as an Ebook or paper book.
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Post time: Nov-05-2016