View Single Post
Old 05-07-2008, 02:35 PM   #1
dudemaaan
Rotary Fanatic
 
dudemaaan's Avatar
 
Join Date: Mar 2008
Location: Brenham, TX
Posts: 335
Rep Power: 18
dudemaaan will become famous soon enough
cooling fan problem (please see the bold font especially)

well yesterday a couple wires somehow shorted out at the front harness near my passenger headlight. I got the wires repaired, one was a large blue wire the other a brown/white wire and the 3rd was a green/yellow wire.

Afterwards my fans wouldnt come on with the Power FC settings. They would come on immediately if i turned the A/C switch on, and ive been running them this way to keep the engine cool. The 4th relay that looks different then the other 3 i believe is the one that is controlled by the A/C switch its working fine.

I was trying to test the other relays and they appeared to be working at first, at least 2 of the 3. Then i got a little confused as to which was which and then they all seemed like they checked out, then i dont know if i did something but none of the 3 seemed like they were working correctly after that. So maybe i messed them up or something.

I'm going to try to get new relays but i need to know a couple things after i get them.

One of the relays has a Large black wire, after putting a voltmeter on it, i discovered this black wire is a ground, or is grounding out. I dont know which is the case, so i need to know is this wire supposed to be grounded or supposed to have positve voltage?

Reading the workshop manual it said to apply voltage to relay terminals C and D then check continuity between a- b. Well my black wire is on terminal D and its grounded out, so if i connect power to this wire it just get sparks. (thats how i found out it was grounded, i then did a continuity test between it and ground to verify)

I would like to test to make sure the ECU is sending the signal to turn the fans on. I will set the fans to 0 and then test whichever wire(s) i need to. On the ECU what wire(s) is this and at the relays which wire/wires is this?

_________
dudemaaan is offline   Reply With Quote