> I'm pretty sure the switch is to tell the ECU that there's an added load
> (from the power steering pump), so it needs to increase the idle speed.

Idle controller, not ECU. That little box behind the right tail light.
Separate system. If the wire is roasting from being grounded, the idle
controller has likely failed somehow (not unusual). Van will run
without the idle controller, for the most part.

--
John Bange
'90 Vanagon - "Lastwagen"
'90 Vanagon GL - "Wiesel"

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