Download the 7th generation Civic service manuals (01 & 02-03) at the link in my signature.

 

Yo Ron, we got it going!!!!!!!!! Turned out the alt belt had a piece fraying of the edge. It got about 4 inches long and slapped the wires on the crank sensor. It didn't tear them loose but it did strip insulation and shorted them out. We cut out the bad part, spliced back together, put on a new belt, and he's on the road again. I sure appreciate your help.

Happy Thanksgiving, Pel

 

Congrats on the fix. Have care-free Thanksgiving.

 

I am having the same problem. I have a 2004 civic SI ( canada ) and it keeps blowing the ecu fuse. I saw that the wiring bunch from the hood fuse box goes into the bottom of the left side of the car towards the ECU behind the glove box compartment. That bunch divides into 3 bunches, 1 goes up ( do not know where it goes), 1 goes to the inside of the car to the ECU, I assume and 1 small wiring goes to the O2 sensor #2. The one that goes back to the ECU has its electrical tape off and looks contaminated with water ( snow here in Canada ). Does anybody know where that bunch of wiring eactly connect to the ECU? Would that be my problem. I will try and clean that open insulation and see if that fixed that when the weather gets a little warmer. Anybody has any advice? Thanks.

Gerry

 

Disconnect the battery. Unplug the big plugs between the body harness and the engine harness. Then test ohms from the yellow-black wire to ground on both sides. This will tell you if the short is in the body or the engine side.

 

Thanks for your reply. What big plugs between the body and the engine harness are you referring to?

 

Can anyone identify where the left side of this connector leads to. The right side of the connector comes through the firewall and to the under hood fuse box. The larger of the two connectors is the male end and consists of 12 pins. The one that I am holding in the pictures is the one I would like to know where it leads to. Thanks

 

I found the source of the short that keeps blowing the ECU 15A fuse, it's the crank sensor. When I disconnect the connector it does not blow the fuse. My question is is it really the sensor that is shorted or the combination of the sensor with the connector. Even if the connector is not connected and it is not blowing the fuse, could it still be that connector. I just want to make sure that the fault is in the sensor before opening things up. Thanks.

 

It's not the connector. Something is wrong past the connector. What usually happens is somewhere under the pulley and plastic cover, the wire to the sensor gets cut or pinched and shorts out to ground. You may be able to fix that with some tape rather than buy a new sensor.

 

Thanks MK. I will follow up on your advice and check for a short on that cable this thursday when it gets nice here in Edmonton, Alberta Canada. Thanks again.