PSE wiring question

[Kim]

When I got my car back from the shop recently, I discovered that the quiet mode of the PSE does not work. (its important because I often drive out of neighborhood at 4 AM headed to work). Its 85 miles back to the shop, so I thought it might be quicker to trouble shoot myself. I installed the PSE myself  a number of years ago but find I am quite rusty on the details.

 

I don't believe its a fuse or the relay, as the light in the switch lights up when the switch is activated. Regardless, if someone could point me to the appropriate fuse, I would appreciate it. The relay is a recent replacement, so I don't suspect it ... yet.

 

Also, could someone  tell me what I should be reading at the two wires: gray/red and red/blue that plug into the vacuum switch?

 

Thanks

 

Kim

 

 

[Loren]

The is a solenoid on the engine that activates a vacuum valve.

See that it is switching and that the vacuum lines to valves on the mufflers are connected and not damaged.