machew03
-
Posts
1 -
Joined
-
Last visited
BigMackTrucks.com is a support forum for antique, classic and modern Mack Trucks! The forum is owned and maintained by Watt's Truck Center, Inc. an independent, full service Mack dealer. The forums are not affiliated with Mack Trucks, Inc.
Thank you for your support!
2011 pinnacle a/c question
in Modern Mack Truck General Discussion
Posted
i have a 2011 pinnacle day cab that has no a/c. upon inspection i found no power getting to the binary switch. when i check the fuse i find only .025 volts getting to the fuse. when i unplug the harness from the a/c control panel i get 12 volts coming out of the control panel but as soon as i plug the harness back in it drops back down to .025 volts. i put a new control switch in thinking that the problem was in that and it did the same thing. so i plugged the old control panel into a different pinnacle and it works fine. i cant find an apads on this unit. my question is this. what if anything is in line between the control panel and the fuse that would cause such a large drop off in voltage when i plug the control panel in? and if there is nothing what would be causing this large drop off?