Air solenoid in electrical cabinet, 2002 Monterey Seacliff 36, 350 Cummins

[Robert Paisley]

In my electrical compartment (driver's side, forward of front tire), on the left side of the compartment, there is an air solenoid.
it looks like two air lines coming in through a pressure switch assembly and one line going out through the solenoid.
There is also a mystery switch under my dash panel, hanging from a couple of wires. The switch is near the engine diagnostic connector. Looks like a pushbutton, momentary switch. You can only see the switch while crawling under the dash area.

Could this be the air bag blow down system that I haven't been able to find? Or something else?

Thanks,
Robert
Upland, CA

[Gerald Farris]

Robert,
It sounds like the solenoid in the LF electrical bay is for your air horn and the switch under the dash is for ABS (antilock brake system) diagnosis.

Gerald

[Robert Paisley]

I will take a look at the air horn possibility.
I saw another post mentioning that the air horn solenoid was on the passenger side forward of the cabin area, up near the AC evap unit.

On a side note, I don't think this coach has a front accumulator tank for the air horn. My Sahara had a tank up front for the air horns and they came on loud and fast when you hit the button. The Monterey air horns take awhile to build up a head of steam when you hit the button.
A small accumulator tank upfront might be a nice addition,

Robert
 

[Bill Sprague]

On our '04 Monterey, there is an air solenoid in the electrical bay that operates the step well sliding cover.