Bosch Relay Behavior

As I clean up an electrical mess left behind on my 1989 Mondial t coupe US car and being a newbie at dealing with relays, I have the following istuation and I would appreciate feedback or guidance.

Context:
I tested all of my relays, and strangely, all of the Bosch 0 223 014 113 units appeared to fail. That seemed unlikely, so I ran further tests under load. I noticed that when power is applied and the circuit closes allowing current flow to both output pins as shown in the diagram I’ve attached.

My question is:
Is this the expected behavior? My understanding is that power would switch between pins 87 and 87a — not go to both simultaneously.

I’ve also included a sketch of how the relays tested on my end. I find it hard to believe they could all be faulty, so I’m wondering if I’m misunderstanding how they’re supposed to work.

Thanks in advance for any insight you can provide
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Hello @raemin. good to hear from you and thank you very much for the thread, I really appreciate it.

THANKS

 

Hi @Steve-magnusson.260/and everyone, thank you very much for these great detailed message. I have now finally understood and tested, all my relays seem to be working fine so what I did next I lightly sanded every terminal to make sure connectivity is optimal and use some deoxit spay.

Car started and go figure fog lights, which were the number one culprit are now working. Not sure What I did to make them work, but they are working

On another note, I found additional but different relays as shown in the following photo. They were pretty new but different from the Bosch so I did not test them.

I unplugged them and spayed deoxit I also unplugged the computer to inspect and added the deoxit as well.

something called my attention, and that is that the fuses that are attached to the relays on the far right there was no fuse so I’m not sure if there is not supposed to be one so I plugged a five amp fuse just to see if anything changed, but so far I cannot tell.

Do you know what are these relays for

When I started the car, I have my ABS light on and flickers. I’m gonna Let it run and see if it goes away. If not, then I’ll have to troubleshoot that next. It was not lighting up before

Thank you.
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Uff, another update:
Upon celebrating my achievements of the day, and while trying to put the center console together, I realized that now the rear window defroster is not woring now, the switch in the center console does not turn it on, I checked the fuse and its good, I also tested the relay that happens to be shared between the defroster and the windows motor and coinsidentaly my drivers window is not going up while the passenger window works well.
Any feedback is welcome.


Additionally if anyone has a diagram or a photo of where all the cables under the center console connect to, I would appreciate if shared.
When I when I disassembled the center consul, after picking the car up from the upholstery shop, I found some of the cables disconnected specifically some yellow and black, they do not seem to have a place where they should be plugged into and so I'm not sure how to proceed again, any feedback is super appreciated

 

Yes I have opened them, mine seem to be working perfect.

I am almost done with the car, very excited. today something happened where my electric defroster, not sure if it’s for the rear glass or for the mirrors stoped working as well as the driver’s window.

also, not sure what I did but the ABS light started flashing and then stays on hope this goes away once i start driving.

Tomorrow I’ll tackle this.
Thanks again for your help.

 

Good morning and thank you so much for this feedback. I had no idea so I’ll be sure to remove the fuse first thing this morning.

what I did was unplugged each one of the relays one at a time inspected and Dioxit spray, I also unplugged the ECU and sprayed dioxide to the connection and then I found the fault at the warning light on the odometer gauge

I will go over this and I hopefully the fault will go away

thanks again for your feedback
Ricardo