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737+ Q&A Updated Daily Free
Engine Medium 2-4 hours for PCM replacement plus programming time 9

1999 Itasca Sunflyer V10 Drivers Side Coil Bank PCM Issue

Yes, you're absolutely on the right track - your testing clearly points to a PCM failure in the ground switching circuit for the drivers side coil bank. The fact that you have +12v but no ground pulse during cranking confirms the PCM isn't completing the circuit.

General Medium 2-3 hours of research/phone calls 9

2007 Dyna Max IE250 Air Ride Electrical Manual Location

The electrical manual for your 2007 Dyna Max IE250's Dyna Air Ride suspension is typically found through Monaco Coach Group archives or specialty RV parts dealers, as this was a premium system installed on select Dyna models.

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