Here is a wiring diagrams so you can see how the system works. If the fuses are okay check the system grounds I have seen the TIPM go bad which will also cause the issue.
Please run down these guides and diagrams and report back
I checked the easy stuff then gave up I had to take it to the shop where they replace the TIPM. Its cost me $389.00 Thanks for your help though I love this site.
Sep 8, 2015 at 7:40 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.