Odd that pin #3 Red isn't connected to anything on the SRS side, no? Why would a always hot 12v wire go to a dead end? Pin #4 violet does have power when turned to Acc. I tried connecting pin #4 violet to pin #4 Gn/Vi on the SRS side, and then testing to see if any of the other connections could get the LED to light up, and nothing happened. I also tested grounding each pin on the SRS side while the #4 to #4 connection was on Acc, and still nothing.
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Ok, you have Power.
You're supposed to connect the pin #1 Brown/Black to the ground.
That Brown/Black wire is connected to the pin #3 in the Check panel connector. Disconnect it, and check the wire resistance between the pins. It should be 0.
The Violet Power wire is connected to the pin #4 in the Check panel connector. It should have 12V in the ASSY position.
Connect 12V to the pin #4 and ground to the pin #3. The bulb should light up. If it doesn't, the bulb must be changed, or there is another problem with a contact in the Check panel.Comment
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You mean test the tiny little pins on the back of the check panel? What can I use to connect to those tiny pins? Also, how do I know which pin is which number? There are 14 pins, and I don't see a map for them in any manual.
I tried just putting 12v on the SRS light and it did come on, so at least I know that the bulb and socket are ok. I also swapped in a "known good" check panel, and its SRS light didn't come on.
btw, thanks for your help, I appreciate it.Comment
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The picture shows the pin numbers. But it's a good idea to match the wire colors.
You may use thin wires to get to the contacts.
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Yup, ok, figured out the pin number thing. Looks like my check panel connecter doesn't have a pin #3. Confirmed that pin #4 on the connector does have power in Accy.Comment
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Just found that if I ground pin #7 and put power on pin #6 the SRS lights up. No idea what's going on here.
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They are 6 and 7 in the 1989 wiring diagram.
Now, you just need to check if the pin #6 gets 12V in ASSY.
And check that the wire from the pin #7 is connected to the pin #1 on the SRS module. Disconnect the connector from the SRS module and connect the pin #1 to the ground.Comment
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Ok, cool. Did they even have airbags in '89?
Yes, pin #6 get 12v in Assy, and pin #7 is connected to pin #1 (Br/Bk) on the SRS connector.Comment
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Then, the SRS computer is most likely dead.Comment
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Yup, no surprise I guess. Is it as easy as buying another computer and swapping it in? Is that safe?Comment
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Final update: Got a working SRS module and swapped it in, and it works fine. Didn't even need to reset it. Thanks again to Vincenze for all the help.Comment
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It may be caused by the excessive resistance of the line to control the restart capsule, or the failure of the SRS computer system. It is recommended to check the fault code or wrap some insulating tape around the online rental.Comment
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This thread got me thinking. I just reinstalled my check panel today after I fixed the broken clips holding the face plate. My SRS light stays lit. Is that normal operation?90 Bronzit 325is
16 Black Sapphire 340i M SportComment
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You can try to reset it.
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