ydeny Posted February 26, 2014 Report Share Posted February 26, 2014 hi everyone I have a 96 corolla with a 2e engine now I have been trying to get power to the interior lights, when I checked the fuse under the hood in jb2 it was blown so it was changed, now however with that fuse in the rad fans and a/c fan run without the key in the ignition or the engine running.can anyone help? I don't have a wiring diagram for his car but I did change the fan relay at the same time. Quote Link to comment Share on other sites More sharing options...
Mechanical Sympathy Posted February 26, 2014 Report Share Posted February 26, 2014 (edited) You've wired the relay up incorrectly or the relay is faulty. A multimeter and a wiring diagram will help you get to the bottom of it. Edited February 26, 2014 by Mechanical Sympathy Quote Link to comment Share on other sites More sharing options...
B.L.Z.BUB Posted February 26, 2014 Report Share Posted February 26, 2014 Relay could be 'always on' instead of 'always off'. Quote Link to comment Share on other sites More sharing options...
ydeny Posted February 26, 2014 Author Report Share Posted February 26, 2014 thanks guys all I did was replace the old relay I didn't change any of the wiring though perhaps that was done before, would a faulty temperature sensor do this without the engine running? Quote Link to comment Share on other sites More sharing options...
Mechanical Sympathy Posted February 26, 2014 Report Share Posted February 26, 2014 (edited) No I don't reckon that's it. As Reed suggested you may have bought the wrong kind of relay i.e. Normally Closed instead of Normally Open if you've plugged the wiring into like-for-like. Or possibly - if you've run your own wiring (edit: you didn't) or you plugged them in wrong - you may have wired it straight to the battery instead of an "ignition on" circuit. Edited February 26, 2014 by Mechanical Sympathy Quote Link to comment Share on other sites More sharing options...
ydeny Posted February 27, 2014 Author Report Share Posted February 27, 2014 thanks MS I am jut puzzled a to how the fuse for the dome light has anything to do with the circuit for he rad and ac fans if I ad a wiring diagram it would help. and it is possible they sold me the wrong relay Quote Link to comment Share on other sites More sharing options...
Mechanical Sympathy Posted February 27, 2014 Report Share Posted February 27, 2014 Check the relay it will say "NC" or "NO" on it somewhere. If you've got the wrong one grab yourself a Gregory's or Haynes service manual for your car when you go back to the shop. They're essential reading for the backyard mechanic! Quote Link to comment Share on other sites More sharing options...
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