ABS pump Hard pedal - Saab 9000 Bulletin Board - Saabnet.com
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ABS pump Hard pedal
Posted by Dan Y [Email] (more from Dan Y) on Sun, 15 May 2022 13:41:11
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I wrote last week and am providing an update on the ABS issue on my 91 9kt follwoing replacement of multiple brake lines.
I followed a post by Ari from April 22, 2005 to determine if my ABS pump is bad.
1. I measured voltage at pin 30 of the relat socked and it produced full battery voltage.
2. With the ABS relay removed and the ignition moved to the on position, I jumped pin 30 to pin 87 to jump start the ABS pump. The pump did not run when jumped.
3. I reinstalled the relay and removed the plug to the Pressure switch. I had my assistant trun the ignition to the run position and my volt meter read 2.5 volts for approximately 1 or two seconds then read nothing.
Does this suggest a wiring issue from the relay box to the ABS pump plug? If so, is it possible/advisable to run 12V battery voltage directly to the ABS pump to determine if the pump is toast?
Thanks in advance for any help.
Dan
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