[Main 9000 Bulletin Board | BBFAQ | Prev by Date | Next by Date | Post Followup ] Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos Help with ECU via the red wire on pin 1 Like This Post: - Subscribe to Daily Digest for this Bulletin Board Posted by Bill Homer [Email] (#3427) [Profile/Gallery] (more from Bill Homer) on Tue, 26 Feb 2008 12:45:20 In Reply to: Bill Homer help with ECU via the red wire on pin 1, Broken_Aero, Tue, 26 Feb 2008 11:36:49 Alert me when someone posts in this thread: Members do not see ads below this line. - Help Keep This Site Online - Signup

The cruise control module is located in the dashboard above your left knee (US cars). To get to it, you will need to remove the carpet-like cardboard panel which hides the pedal mechanisms, as well as the long heater duct tube that goes from the central console to above your left knee - it's held in place with one Torx screw on the back left side.

Now that you have access, the cruise control module is a silver box about the size of a pack of cigarettes, labeled Hella/SAAB 41 08 650; it's held in place with a springy plastic clip. Carefully pull it up out of the clip by pulling the clip forward a bit. To test, find pin 1 on the connector - this has two fairly large red wires attached, hard to mistake it for something else. Measure the voltage with the ignition ON (car does not need to be running). If I recall correctly, the measurement should be about 12V if operating properly; mine was stuck at 0V when I first measured it (there is a relay that when energized provides a path to ground).

For a quick and dirty way to see if this module is causing your boost problem, just disconnect it. You will need a small flatblade screw driver to release the wire that keeps the plug snapped on to the module. Remove the connector, wrap it in a plastic bag to prevent accidentally shorting something, go for a drive. If the cruise module was causing the problem, you will know about it immediately with the return of full boost!!!!

posted by 75.33.245...

• Tech II---how to fix base boost, collisdan@yahoo.com, Sun, 24 Feb 2008 08:22:50
  • Might be a simple mechanical issue like mine was?, Andy (West London), Sun, 24 Feb 2008 15:03:35
  • Re: Tech II---how to fix base boost, Bill Davies, Sun, 24 Feb 2008 09:51:42
    • Re: Tech II---how to fix base boost, Steve C., Sun, 24 Feb 2008 15:15:18
      • Hey Steve, did you ever check your brake pedal switch?, turrbo , Mon, 25 Feb 2008 17:37:54
        • Where do I look for this switch?, Steve C., Mon, 25 Feb 2008 18:13:22
          • Re: Where do I look for this switch?, turrbo , Mon, 25 Feb 2008 19:31:49
            • Additional notes on debugging full boost for a 1994, Bill Homer , Tue, 26 Feb 2008 08:41:27
              • Bill Homer help with ECU via the red wire on pin 1, Broken_Aero, Tue, 26 Feb 2008 11:36:49
                • Help with ECU via the red wire on pin 1, Bill Homer , Tue, 26 Feb 2008 12:45:20 <-- Viewing This Message
            • Re: Where do I look for this switch?, Bill Davies, Tue, 26 Feb 2008 01:09:09

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