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Old 01-08-2008, 02:33 AM
Bob Weir Bob Weir is offline
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Join Date: Sep 2002
Location: Allentown, PA
Posts: 482
I answered one of my own questions.

The vac reservoir attached below the Climate Control reservior is fed by a yellow check valve that also feeds the Switchover aka Changeover Valve located behind the brake booster. The Changeover Valve also feeds the vac element for shift retard on the trans - the infamous upshift delay Code 26.

Bob
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94 e320 ACC Switchover valve Access & Testing-vac-check-changeover-valves.jpg  
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