luispequeno

i have recently repainted my engine bay...

i took out all the wiring and accessories and repainted it.

i replaced the old wire harness that was messed up all over. i had a problem with the engine fan not working so i thought the wire harness was my issue. i replaced it and same problem!

now none of my fans work, but yet i can get it work when i run them direct. i have checked all my grounds and they're all in tact. i ran a test light to the two plugs and neither one shows power. so i checked the relays and swapped them out for a knowing good one and still nothing. in that same relay box i checked the fuse and it is fine.

am i not looking for another relay or fuse? i even did the bypass at the fan switch and still no power there, bypass doesnt not trigger them on!! brand new ECT sensor.

also i'm showing a CODE 6 ECT SENSOR. Wires are fine and sensor is new. i am running a p2t ECU

SOMEONE PLEASE HELP

luispequeno

bump! someone help after 130 views!!

tony_2018

Did you check thermostat fan switch?

tony_2018

Please be honest when you answer this question, what year is your car and what year harness did the car come from?

Former User

Check the fan fuses.

For code 6, resistance test the 2-wire ECT sensor under the distributor.

luispequeno

@tony--when i jump the fan switch plug, the fans dont kick on... i'm sure the fan switch is fine. there is NO POWER when i use a test light....

@ron-- i checked the fuse in the firewall box, as well as relays. i looked under the dash and it seems like theres no fuse for fans down there.... am i missing something?

@ron -- how much resistance is my meter supposed to read??

Former User

You said fans not fan, so there is more than one fuse. Which fans? Which fuses did you check already?


200-400 Ohms when engine is fully warmed up.

luispequeno

engine fan that runs off the fan switch, and a/c fan that runs off the a/c control inside

luispequeno

i checked the one fuse in the fuse box in the engine bay. top right one, as well as swapped the relays with working ones...

Former User

What car and engine? This information is required in tech forums.

luispequeno

00 civic si, jdm b16 hmo engine, has obd1 engine, no crank sensor (did the ecu by-pass), obd1 distributor with pigtail to obd2 harness....

Former User

Fuses 17 and 56

luispequeno

how do i know the fuse number? is there a chart or something?

Former User

See FAQs sticky.

luispequeno

bump, back on this project!

i no longer have a CEL but the fans still dont kick on! now my waterpump bearings are going out... would a bad water pump or a stuck thermostat cause my fans to not kick on?

fuse 17 and 56 are both good, my relay is good as well.

any inputs?@ Ron

luispequeno

bump, back on this project!

i no longer have a CEL but the fans still dont kick on! now my waterpump bearings are going out... would a bad water pump or a stuck thermostat cause my fans to not kick on? -replacing water pump right now-

fuse 17 and 56 are both good, my relay is good as well.

any inputs?@ Ron

anybody?

cvcrcr99

In for an answer. I am having the same problem, too.

strategy400

I had a broken wire right next to the ECT plug once. The wire was broken inside the insulation. Pulled the plug off the wire and took it to Honda the guy behind the parts counter pried the plug apart and came back with 2 new pin-connectors to rebuild the plug. Crimped the new pins on the wire, put the plug back together and no more CELs to this day. No charge. Honda is ok sometimes.

Also if you paint the bay red you'll get 3 extra horsepower.

luispequeno

i found the fuse under the hood was a little corroded from not having a hood for so long. fan works only when bypassed at the fan switch.

fan switch must be bad.

a/c condensor fan still doesnt flicker on. will troubleshoot more in the near future

95civicproject

yes if your thermostat is stuck your fan will not turn on not sure which position it has to be stuck in but i know that if the thermostat is stuck in one of those positions it wont know that its over heating. I am guessing that your car is over heating?

Ryan Lwin

So, if you short the fan switch and if fan turns on, check or replace your thermostat. They are cheap. For the A/C fan, did your compressor work when you turn the A/C on? If compressor doesn't work, then it's not your fan. It's either the fuse or the switch.

d15bvtechatch

iTrader: (2)

stock obd2 harness shouldn't have any proBLEMS with a/c fan. chase wires, its easy. not sure the color wire, but it is on yur a/c fan motor follw its continuity with a/c switch in/depressed