Educate Me

[turtlecrxsi]

Originally Posted by TheSilentChamber

Why does everyone keep saying pull the red hazard fuse? It doesnt have anything to do with the ecu, If you dont believe me pull it out and start up your car. It is the fuse to your hazard lights. You have to pull the battery cable or the main fuse for it to reset the ecu.

The ecu cycles, so after a few days or normal the ecu has sysematiclly reset itself in most cases.

Then why does the Helm's manual say "remove HAZARD fuse in the under-hood fuse box for 10 seconds to reset ECU" here (example from idle adjusting page)?

[TheSilentChamber]

I dont know, must be a bad translation or something, that fuse does not controle the ecu.

[turtlecrxsi]

I think it has to do with air/fuel mix. I'm pretty sure 91civicDXdude can explain it. I was skeptical myself but why would the fuse for just the hazard lights be in the under-hood fuse box?

[TheSilentChamber]

the fuse for the taillights and brake lights are under the hood also. Maby I'm wrong, but I'm 100% possative that on my 88 dx hatch that it has absolutly nothing to do with the ecu. Maby its been rewired or something, but I know that mine has nothing to do with it.

[turtlecrxsi]

It's probably just an mpfi 90-91 thing. There are so many differences between 88-89 and 90-91 and civic hatches and the crx. For example, the timing jumper is located in different spots.