Site News - 1/3 Saabnet.com Member of the Year: DougM
Date: Wed, 13 Dec 2006 11:59:27 -0500
From: Fred W <malt_houndnospamo.com>
Subject: Re: cruise control- FIXED


John B wrote: > Hi, > > I would like to share my recent (successful) experience fixing cruise control > on my 1992 900. It started malfunctioning several years ago, and ultimately > stopped working at all. I fixed it by re-soldering the contacts on the circuit > board, but it broke again after about a week. It is my understanding that the > circuit boards in the 41 08 643 cruise control units (used in >=1992 c900s) and > their counterparts in the >=1992 Saab 9000s (41 08 650 I think) fail quite > often. > > I saw a post by Jeff on the saabnet.com Saab 9000 bulletin board that addresses > this problem. He successfully used the 95 26 757 (from the pre-1992 Saab 9000) > or its counterpart from the pre-1992 c900 to substitute for the faulty > post-1992 unit. The central problem with this scheme is the different wiring > connectors. He received this wiring diagram from Ville V A Hinkkanen in > Finland, which outlines how to connect the pre-1992 cruise control module to a > post-1992 car (colors may vary a little, but pin numbers are right): > > 1 (brown) -> 10 (red) 12 V, if ignition > 2 (red-white) -> 3 (red-white) SET => 12 V > 3 (black) -> 5 (red-white) brake & clutch pedal > 4 (grey) -> 7 (grey) vacuum pump > 5 (blue) -> 11 (blue) speed signal > 6 (yellow) -> 4 (yellow) RESUME => 12 v > 7 (orange) -> 6 (orange) vacuum pump > 8 (black) -> 8 (black) ground > 9 (red) -> 1 (red) & 9 (white) 12 V, if the cruise is on > > I took his suggestion and made an adapter cable by connecting the wiring > harness that goes with a 95 26 757 (harvested from a 1990 Saab 9000) to the > male connector removed from a broken 41 08 643 unit. I used this to connect the > 95 26 757 cruise module to my 1992 c900, and it worked perfectly. Plus, the > "accel" feature works by pressing the "set" key, which is a feature that hadn't > worked since the car was new. > > I think this should work for connecting cars with broken cruise modules 41 08 > 643 or 41 08 650 to replacement modules 95 26 757, 85 87 016, or 95 60 905. > > I am very happy with how this turned out, and I hope other people with broken > cruise control in post-1992 900s and 9000s will find this post helpful. > Special thanks to Jeff from the Saabnet 9000 BB, and the guy from Finland. > > John -- -Fred W

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