Fault code presented was 35, which should be IAC, changed that IAC to a brand new one, fault still there, changed back to the old IAC. Changed TPS to a brand new one and the fault has not occured anymore. Maybe need another fault code list to interpret faults right. Is there a fault code list where ...

My ecm looks like the other ecm´s in this thread, missing chip U2 and U5, so I guess it is not made for 8192 baud communication, only 160 baud. I hoped it was possible to get some live data from sensors, and DTC´s, via 160 baud/12V on pin E , because this thread had the same/similar hardware, same/s...

Hello, Your engine C16NZ looks nearly the same (found some engine rooms when googling for C16NZ) as mine, C13N, with MAP-sensor and single injector. Distributor looks the same. The ECM looks similar on the inside, also 160 baud, i have a 12V-signal on pin E when connecting pin A and B with 10k resis...

Ok, that was some info on U5. I only have a Haynes manual. Yes, good advice to check pin assignments. In my -89/8192 baud box there is markings on IC´s: U2: A20807, 64606 KOREA U4: 014, 034987, AA9213ABS U5: 014, AA8822P, 44188 U8: 185, 16079434, MR8826M, ZBKQR U9: 185, 16045148, MQ8827H, ZAHGQ U10:...

Ok, In your link, the"808" to the left lacks the U2, but has the U5, what has U5 for function ? The U2, SXR-chip seems to give 8192 baud capability. Can I use the -89/8192 baud-box as a direct replacement to my -87/160 baud-box without destroying samething, or do I need to change the harne...

I haven´t found a DTC-list specifically for my box to C13N-engine.

After looking inside spare boxes,
The box from Corsa A 1988, C13N, is a 160 Baud box.
The box from Corsa A 1989, C13N, is a 8192 Baud box, I think, since it has SXR-chip (U2) and a U5-chip. See photo below.

I don´t know if it is a special list you mean? I have tried to search on the web for 01227887 and DTC but couldn´t find any list.

I will check the IAC when I get my car back.


Thanks,

Anders

Thanks for replying. Are these fault codes applicable for my ECM ? https://web.archive.org/web/20170915123658/http://www.gmsidan.se/multec.html I used no 35 from that list : Idle stepper motor - Poor or no idle speed control. I can take a photo of the ECM in the car ,C13N from 1987, the next weekend...

I did try the paperclip an hour ago and it worked, got 12 12 12 and 35 35 35 and 12 12 12, so it gave fault code 35, maybe IAC because engine don´t run, only ignition on ? Sorry to say but the permanent fault code had vanished some days ago, we´ll see if it comes back. I put a 10k ohm resistor betwe...

Thanks for replying. On the schematics for my car it states: A: brown, ground. B: black-white, goes only to ECM/A9. E: brown-white, goes to ECM/A5 + CEL. F: red, goes to ECM/C16 and fuel pump relay. I can´t find my ALDL-connector on any of the url´s suggested. If I start picking info from other conn...