Dash AC Problem
My dash AC stays on regardless of the switch setting. The compressor appears to stay engaged all the time. It's a 2006 HR with Workhorse 8.1. Where do I Start??? Thanks for any help.
Forum Discussion
j-d wrote:
This Link is "A" Workhorse Manual. Maybe matches yours, maybe not. I found the A/C Compressor Relay in the "outside" fuse box and it's pictured as a square relay, looking at it from the top. Is this thing a Cube. around an inch on a side? If it is, could well be a "Bosch Relay" and here's the wiring diagram for it.If yours has five terminals, there should be continuity between 30 and 87A with the relay out of the vehicle. Out of vehicle, between 30 and 87 should be OPEN. 85 and 86 are the coil that pulls the relay into contact, so there should be continuity across them. If you have test leads, you can put 12VDC to 86 and ground to 85. Relay should click and then 30 and 87 would have continuity. 30 and 87A would now be OPEN. Not every Bosch has five terminals. If it doesn't then just disregard what I said about 87A.
Thanks. Same looking relay except there is no 87a. There "is" continuity between 30 and 87. 85 and 86 have continuity. So bad relay?
