CIS Wiring Diagram? - Dorkiphus.net

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Old 05-07-2004, 07:12 AM
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CrewChief CrewChief is offline
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OOPS Check the frequency valve itself. It's simply a solenoid. Should measure 2 to 3 ohms.

Also, was it running previously? Or is this a restoration of a long idle car? If long idle perhaps a sharp rap or 2 to dislodge a mechanically frozen valve?

Gotta run. See if MY old CIS is running correctly!

No wait a minute.

"This checked out fine. We had 12v to the FV from the lambda relay side. When we tested the computer side, we read a constant +.5v. It could have been switching fast enough that the multimeter wasnt keeping up. "

This would indicate the FV is constantly ON. The .5V is reasonable for a solid state swtiching device (transistor). If the FV was switched OFF then there would be 12V on both sides as there would be no current flow. What does this mean? I really don't know. The resting state of the computer could be ON for all I know.

When I return this afternoon I will review the trouble shooting guide and share it also.

Look for the power and squarewave output on the computer test lead.
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