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ABS testing and issues
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Posted by Dan Yasenko [Email] (more from Dan Yasenko) on Tue, 17 May 2022 06:17:34 Share Post by Email
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I am still trying to diagnose the issues with the ABS on my 1991 9kt. After replacing most of the brake lines and the supply line to the MC, I can't get fluid to the rear brakes nor can I get the ABS pump to work.
I would like to determine that my ABS pump is bad before removing the entire hydraulic unit from the car. To do so, I'd like to send power directly to the ABS pump, but I'm not sure which plug to use to power the pump.

Would I power the ABS pump by removing the plug from the pressure switch and running 12V and a ground to the plug? If no, what would work. I don't want to accidently fry something and create more issues for myself.

I attempted to determine if power is running to the pressure switch and found app. 2.5 V to the switch for a second when the ignition is switched on. The VOM only read power for just a second though when the ignition was switched on.

I jumped pins 30 to 87 on the relay socket and the pump didn't operate.

Thanks for any help you can provide for me.
Sincerely,
Dan

posted by 174.25.135...

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