DamirGTI 342 Posted June 15, 2008 Hello ! The two green relays in the engine bay are tachy and injection relays right , for what is this yellow one next to the ECU then ?! (it's '90 Motronic car ..) Thanks ! Damir Share this post Link to post Share on other sites
gerlewislewis 0 Posted June 15, 2008 (edited) the tachymetric relay is near the drivers right knee. afaik Edited June 15, 2008 by gerlewislewis Share this post Link to post Share on other sites
Miles 331 1 Cars Posted June 15, 2008 The Motronics don;t run a Taccy relay, It's a ECU and Fuel pump relay which that one is, the green relays are for the lights and horn (Model and spec depending) Share this post Link to post Share on other sites
DamirGTI 342 Posted June 15, 2008 Ok. but now i'm confused If the yellow one is tachy relay , what are these green relays : One of these green relays is injection supply relay , and the other green one is ?! According to the Haynes mega confuse wiring diagram (well to be honest i don't think that it's correct diagram for motronic car after all..) the green ones are tachy and injection supply relays , however i can't find the yellow relay anywhere on the diagram .. Anyone have proper wiring diagram for Motronic 1.3 management ? Rgs ! Damir Share this post Link to post Share on other sites
welshpug 1,657 Posted June 15, 2008 have you got wire numbers for the yellow plug? Share this post Link to post Share on other sites
DamirGTI 342 Posted June 15, 2008 The Motronics don;t run a Taccy relay, It's a ECU and Fuel pump relay which that one is, the green relays are for the lights and horn (Model and spec depending) Yes but the wiring on this relay : comes straight from the ECU loom (from the ECU side anyway on this the LH car ..) , so it can't be light or horn relay then , right Damir Share this post Link to post Share on other sites
DamirGTI 342 Posted June 15, 2008 have you got wire numbers for the yellow plug? Yes it goes like this : Purple - 77A Red - 1A Orange - 120 Orange - 96A White - 76 Brown - ?? (can't find any numbers on these one ..) Thanks ! Damir Share this post Link to post Share on other sites
mhyphenl 10 1 Cars Posted June 15, 2008 Yes it goes like this : Purple - 77A Red - 1A Orange - 120 Orange - 96A White - 76 Brown - ?? (can't find any numbers on these one ..) Thanks ! Damir I spent days on this one and finally got it sorted! On the Haynes manual its labelled as a tachy relay but its not really. It supplies the power to the fuel pump, SAD and lambda heating element and is activated in line with the injection relay in the engine bay. The haynes wiring diagram is right but badly labelled, you'll find the wire numbers are correct!! I have a fault on my ECU which keeps cutting that relay out for a fraction of a second at a certain rev band, thats why I spent so much time on it. Autodata books have some info on it as well as citoen motronic diagrams! Never figured the other green one!! Share this post Link to post Share on other sites
DamirGTI 342 Posted June 15, 2008 (edited) I spent days on this one and finally got it sorted! On the Haynes manual its labelled as a tachy relay but its not really. It supplies the power to the fuel pump, SAD and lambda heating element and is activated in line with the injection relay in the engine bay. The haynes wiring diagram is right but badly labelled, you'll find the wire numbers are correct!! I have a fault on my ECU which keeps cutting that relay out for a fraction of a second at a certain rev band, thats why I spent so much time on it. Autodata books have some info on it as well as citoen motronic diagrams! Never figured the other green one!! True , just had a look on the diagram and all the wire numbers are correct . I have various PSA manuals , so i'll investigate Citroen manuals if i can find something about the other green relay (the one which is inside the black box ) .. no sleeping for me tonight until i finish my homework Thank you ! Damir Edited June 15, 2008 by DamirGTI Share this post Link to post Share on other sites
Miles 331 1 Cars Posted June 15, 2008 The one with the big brown wires normally has a brown relay lile all the Mi16's but they can run this type of relay, never looked into the differances, The other one I;m sure if something to do with the low water light, I guess it's a late car Share this post Link to post Share on other sites
