I have a 2010 F150 5.4L 3V. I have a n intermittent issue some times run just fine and other times run roughly. Scanner shows P0354 Error Coil “D” Primary/Secondary Circuit Malfunction. I found this is the last cylinder driver's side closer to the firewall I switch coil and plug to cal 1 & 2 and the P0354 Kees showing. I think is a Wireharness or PCM problem. I'm asking to know the wiring schematic in order to test continuity between the COP connector and the 66 Pin PCM central connector.

I'll appreciate your help.

Art Garcia

 

#4 is rear cylinder on the PASSENGER side.

 

Read and heed! If you've been working on the driver's side, you're on the wrong side of the engine. Start over.

Here is the requested schematic.

 

Yes! you are right! Chat GPT made a mistake! By the way I can't find the attached schematic. would you attache again please?

 

It's an inline image. Use a computer and make sure your browser is set to allow images.