Engine not cranking on neutral?

2005 FORD F-150

365,436 MILES • 4.4L • 2WD • AUTOMATIC

BLESSING EWOBOR

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753 POSTS
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Hello, the vehicle is not cranking when the gear lever is in Park, it cranks when it is in neutral. I connected the scanner, on the live data, I checked the transmission range it was in P, when the vehicle is on park, simply mean that the PCM could read that the vehicle is in Park but it still doesn't crank.
What could be the cause?
Could I get a diagram for the starting system?

Jan 13, 2025 at 12:24 PM

STRAILER

✓ASE Certified Mechanic
54,503 POSTS

I would say the transmission digital range sensor is bad. It has a different input to the PCM than the starting circuit. Check out the wiring diagrams below to see what I am talking about. Here is how to change the sensor out. Check out the images (below). Please let us know what happens.

Images (Click to enlarge)

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Jan 14, 2025 at 11:10 AM

BLESSING EWOBOR

MEMBER
753 POSTS

Thank you.

Jan 15, 2025 at 8:51 PM

STRAILER

✓ASE Certified Mechanic
54,503 POSTS

You are welcome, let us know how it goes.

Jan 16, 2025 at 9:39 AM