Idle stabilization control unit pinout?

Phil Payne quattro at isham-research.com
Mon Jan 26 04:20:17 EST 2004


> Would anyone happen to have the pinout for the VDO-manufactured ISV 
> control unit with VAG # 443 907 393 L? It was used in quite a few 5-cyl 
> naturally aspirated models in the eighties. Mounts on three standard 
> relay bases in the inside relay carrier.
> 
> My Cq started controlling its idle rather erratically (valve fully open 
> most of the time). Since there's no on-board diagnostics in the car, I 
> need to check all the sensors, switches *and* wiring manually, but this 
> is a bit difficult without knowledge of the control unit pinout.

http://www.isham-research.com/quattro/isv_test.html any use?

-- 
  Phil Payne
  http://www.isham-research.com
  +44 7785 302 803


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