Do you have an electrical multimeter? unplug the strut harness and measure the resistance between two pins from strut side. The resistance should be between 9.5 to 15.5 ohms. If you observe open circuit condition, i.e. infinite resistance, or closed circuit condition, i.e. zero resistance, the internal inductor inside the strut is bad. Also test the both pins to see is any of them are grounded? To do this just measure the resistance between strut metal body and each pin individually. You should read infinite resistance. If the strut fails in one of the tests you have a bad strut. Also using your old strut and plugging them to see what happens to the codes is a very good idea too.
Installed "new" used rear struts and now more problems?
So I scored some rear struts off a 99 STS with 75k on it, installed them on my car (99 sts with 150k) and they work perfectly. BUT Now "service suspension, service stability system and service idle control" all pop up on my DIC. They never showed up until I installed the struts, I've checked and checked all the wiring, air lines ect.. all are fine. I'm hoping it's something simple if all of these popped up at one time, but I don't have a clue where to start, I've cleaned all ground locaions, unhooked the battery to reset everything, no change. Car is running fine (besides randomly blowing etc fuse?) Only codes are : C1721, C1722, C1782, P0550, P1520. All are history, but when I clear all the codes and take a drive they all come back and still pop up history. Any ideas? thanks for your help!
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