Hayden Fan Electrical Circuit on 2000 LXi

[cmillsap]

(07-13-2013 18:23)davidmbrady Wrote:  

(07-13-2013 11:51)cmillsap Wrote:  David,

I am a poor reader of electrical schematics. The electrical technician at Redlands is very knowlegeable. We used the D.W.Frame Comp # 0000633M Page 6 which shows the control circuit source comes from the ECM IGN. I didn't follow that circuit further to determine its origination. I should have been more specific in my original post.

BTW, that 30A fuse we found in the rear panel does not show on the schematic. It is wired between the relay contacts and the Fans on my bus.

I just checked my bus. I was correct the thermal sensor with alarm that I have is an Index Sensors component - part number 8036201.

Maybe Pete will chime in here, but I seem to recall him explaining some time ago about an BB engineering change to the Hayden fan circuitry. Something about the Haydens originally fused with a 15 amp fuse that kept blowing shutting down both fans. It was in the fuse block at the engine compartment and labled "aux fan". BB rewired it to a separate fuse holder and made it 30 amps.

Yep, it is an inline 30A fuse holder on the wire between the fuse block and the panel wire collar.